400b58c0e9
The original string interpolation was based on hil which didn't allow proper escaping, since they used a different escape pattern. Secondly, the golang Unquote function didn't deal with the variable substitution, which meant it had to be performed in a second step. Most importantly, because we did this partial job in Unquote (the fact that is strips the leading and trailing quotes tricked me into thinking I was done with interpolation!) it was impossible to remedy the remaining parts in a second pass with hil. Both operations needs to be done in a single step. This is logical when you aren't tunnel visioned. This patch replaces both of these so that string interpolation works properly. This removes the ability to allow inline function calls in a string, however this was an incidental feature, and it's not clear that having it is a good idea. It also requires you wrap the var name with curly braces. (They are not optional.) This comes with a load of tests, but I think I got some of it wrong, since I'm quite new at ragel. If you find something, please say so =D In any case, this is much better than the original hil implementation, and easy for a new contributor to patch to make the necessary fixes.
841 lines
17 KiB
Go
841 lines
17 KiB
Go
// Mgmt
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// Copyright (C) 2013-2021+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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// +build !root
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package lang
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import (
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"fmt"
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"reflect"
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"strings"
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"testing"
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"github.com/purpleidea/mgmt/lang/interfaces"
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"github.com/purpleidea/mgmt/util"
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"github.com/davecgh/go-spew/spew"
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"github.com/kylelemons/godebug/pretty"
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"github.com/sanity-io/litter"
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)
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func TestInterpolate0(t *testing.T) {
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type test struct { // an individual test
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name string
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code string
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fail bool
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ast interfaces.Stmt
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}
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testCases := []test{}
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// NOTE: to run an individual test, first run: `go test -v` to list the
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// names, and then run `go test -run <pattern>` with the name(s) to run.
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{},
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}
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testCases = append(testCases, test{ // 0
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"nil",
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``,
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false,
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ast,
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})
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}
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "basic string",
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code: `
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test "t1" {
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stringptr => "foo",
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}
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`,
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fail: false,
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ast: ast,
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})
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}
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{
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fieldName := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprStr{
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V: "foo-",
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},
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&ExprVar{
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Name: "x",
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},
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},
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}
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: fieldName,
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "basic expansion",
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code: `
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#$x = "hello" # not actually needed to test interpolation
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test "t1" {
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stringptr => "foo-${x}",
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}
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`,
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fail: false,
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ast: ast,
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})
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}
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "${hello}",
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},
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "variable escaping 1",
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code: `
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test "t1" {
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stringptr => "\${hello}",
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}
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`,
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fail: false,
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ast: ast,
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})
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}
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: `\` + `$` + `{hello}`,
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},
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "variable escaping 2",
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code: `
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test "t1" {
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stringptr => "` + `\\` + `\$` + "{hello}" + `",
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}
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`,
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fail: false,
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ast: ast,
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})
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}
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names := []string{}
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for index, tc := range testCases { // run all the tests
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if tc.name == "" {
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t.Errorf("test #%d: not named", index)
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continue
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}
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if util.StrInList(tc.name, names) {
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t.Errorf("test #%d: duplicate sub test name of: %s", index, tc.name)
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continue
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}
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names = append(names, tc.name)
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t.Run(fmt.Sprintf("test #%d (%s)", index, tc.name), func(t *testing.T) {
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code, fail, exp := tc.code, tc.fail, tc.ast
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str := strings.NewReader(code)
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ast, err := LexParse(str)
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if err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: lex/parse failed with: %+v", index, err)
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return
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}
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t.Logf("test #%d: AST: %+v", index, ast)
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data := &interfaces.Data{
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Debug: testing.Verbose(), // set via the -test.v flag to `go test`
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Logf: func(format string, v ...interface{}) {
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t.Logf("ast: "+format, v...)
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},
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}
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// some of this might happen *after* interpolate in SetScope or Unify...
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if err := ast.Init(data); err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: could not init and validate AST: %+v", index, err)
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return
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}
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iast, err := ast.Interpolate()
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if !fail && err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: interpolate failed with: %+v", index, err)
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return
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}
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if fail && err == nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: interpolate expected error, not nil", index)
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return
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}
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// init exp so that the match will look identical...
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if !fail {
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if err := exp.Init(data); err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: match init failed with: %+v", index, err)
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return
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}
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}
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if reflect.DeepEqual(iast, exp) {
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return
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}
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// double check because DeepEqual is different since the logf exists
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lo := &litter.Options{
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//Compact: false,
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StripPackageNames: true,
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HidePrivateFields: true,
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HideZeroValues: true,
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//FieldExclusions: regexp.MustCompile(`^(data)$`),
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//FieldFilter func(reflect.StructField, reflect.Value) bool
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//HomePackage string
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//Separator string
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}
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if lo.Sdump(iast) == lo.Sdump(exp) { // simple diff
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return
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}
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diff := pretty.Compare(iast, exp)
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if diff == "" { // bonus
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return
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}
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t.Errorf("test #%d: AST did not match expected", index)
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// TODO: consider making our own recursive print function
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t.Logf("test #%d: actual: \n%s", index, lo.Sdump(iast))
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t.Logf("test #%d: expected: \n%s", index, lo.Sdump(exp))
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t.Logf("test #%d: diff:\n%s", index, diff)
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})
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}
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}
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func TestInterpolateBasicStmt(t *testing.T) {
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type test struct { // an individual test
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name string
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ast interfaces.Stmt
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fail bool
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exp interfaces.Stmt
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}
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testCases := []test{}
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// this causes a panic, so it can't be used
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//{
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// testCases = append(testCases, test{
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// "nil",
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// nil,
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// false,
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// nil,
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// })
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//}
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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exp := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t1",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "basic resource",
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ast: ast,
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fail: false,
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exp: exp,
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})
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}
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t${blah}",
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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resName := &ExprCall{
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Name: operatorFuncName,
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprStr{
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V: "t",
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},
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&ExprVar{
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Name: "blah",
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},
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},
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}
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exp := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: resName,
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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testCases = append(testCases, test{
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name: "expanded resource",
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ast: ast,
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fail: false,
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exp: exp,
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})
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}
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{
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ast := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: &ExprStr{
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V: "t${42}", // incorrect type
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},
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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resName := &ExprCall{
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Name: operatorFuncName,
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// incorrect sig for this function, and now invalid interpolation
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Args: []interfaces.Expr{
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&ExprStr{
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V: "+",
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},
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&ExprStr{
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V: "t",
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},
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&ExprInt{
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V: 42,
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},
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},
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}
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exp := &StmtProg{
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Prog: []interfaces.Stmt{
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&StmtRes{
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Kind: "test",
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Name: resName,
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Contents: []StmtResContents{
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&StmtResField{
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Field: "stringptr",
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Value: &ExprStr{
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V: "foo",
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},
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},
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},
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},
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},
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}
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_ = exp // historical
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testCases = append(testCases, test{
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name: "expanded invalid resource name",
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ast: ast,
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fail: true,
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//exp: exp,
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})
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}
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names := []string{}
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for index, tc := range testCases { // run all the tests
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if util.StrInList(tc.name, names) {
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t.Errorf("test #%d: duplicate sub test name of: %s", index, tc.name)
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continue
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}
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names = append(names, tc.name)
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t.Run(fmt.Sprintf("test #%d (%s)", index, tc.name), func(t *testing.T) {
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ast, fail, exp := tc.ast, tc.fail, tc.exp
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data := &interfaces.Data{
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// TODO: add missing fields here if/when needed
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Debug: testing.Verbose(), // set via the -test.v flag to `go test`
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Logf: func(format string, v ...interface{}) {
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t.Logf("ast: "+format, v...)
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},
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}
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// some of this might happen *after* interpolate in SetScope or Unify...
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if err := ast.Init(data); err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: could not init and validate AST: %+v", index, err)
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return
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}
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iast, err := ast.Interpolate()
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if !fail && err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: interpolate failed with: %+v", index, err)
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return
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}
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if fail && err == nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: interpolate expected error, not nil", index)
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return
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}
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|
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// init exp so that the match will look identical...
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if !fail {
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if err := exp.Init(data); err != nil {
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t.Errorf("test #%d: FAIL", index)
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t.Errorf("test #%d: match init failed with: %+v", index, err)
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return
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}
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}
|
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|
|
if reflect.DeepEqual(iast, exp) {
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|
return
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}
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|
// double check because DeepEqual is different since the logf exists
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|
diff := pretty.Compare(iast, exp)
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if diff == "" { // bonus
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return
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}
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|
t.Errorf("test #%d: AST did not match expected", index)
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|
// TODO: consider making our own recursive print function
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t.Logf("test #%d: actual: \n%s", index, spew.Sdump(iast))
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t.Logf("test #%d: expected: \n%s", index, spew.Sdump(exp))
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t.Logf("test #%d: diff:\n%s", index, diff)
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})
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}
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}
|
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|
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func TestInterpolateBasicExpr(t *testing.T) {
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|
type test struct { // an individual test
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|
name string
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ast interfaces.Expr
|
|
fail bool
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|
exp interfaces.Expr
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|
}
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|
testCases := []test{}
|
|
|
|
// this causes a panic, so it can't be used
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|
//{
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// testCases = append(testCases, test{
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// "nil",
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// nil,
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// false,
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// nil,
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// })
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//}
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{
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ast := &ExprStr{
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V: "hello",
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}
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|
exp := &ExprStr{
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V: "hello",
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}
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|
testCases = append(testCases, test{
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name: "basic string",
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ast: ast,
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fail: false,
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exp: exp,
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})
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}
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{
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ast := &ExprStr{
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V: "hello ${person_name}",
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}
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exp := &ExprCall{
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Name: operatorFuncName,
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|
Args: []interfaces.Expr{
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&ExprStr{
|
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V: "+",
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},
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|
&ExprStr{
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|
V: "hello ",
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},
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|
&ExprVar{
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Name: "person_name",
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},
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},
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|
}
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|
testCases = append(testCases, test{
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name: "basic expansion",
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ast: ast,
|
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fail: false,
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exp: exp,
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})
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}
|
|
{
|
|
ast := &ExprStr{
|
|
V: "hello ${x ${y} z}",
|
|
}
|
|
testCases = append(testCases, test{
|
|
name: "invalid expansion",
|
|
ast: ast,
|
|
fail: true,
|
|
})
|
|
}
|
|
// TODO: patterns like what are shown below are supported by the `hil`
|
|
// library, but are not yet supported by our translation layer, nor do
|
|
// they necessarily work or make much sense at this point in time...
|
|
//{
|
|
// ast := &ExprStr{
|
|
// V: `hello ${func("hello ${var.foo}")}`,
|
|
// }
|
|
// exp := nil // TODO: add this
|
|
// testCases = append(testCases, test{
|
|
// name: "double expansion",
|
|
// ast: ast,
|
|
// fail: false,
|
|
// exp: exp,
|
|
// })
|
|
//}
|
|
{
|
|
ast := &ExprStr{
|
|
V: "sweetie${3.14159}", // invalid
|
|
}
|
|
exp := &ExprCall{
|
|
Name: operatorFuncName,
|
|
Args: []interfaces.Expr{
|
|
&ExprStr{
|
|
V: "+",
|
|
},
|
|
&ExprStr{
|
|
V: "sweetie",
|
|
},
|
|
&ExprFloat{
|
|
V: 3.14159,
|
|
},
|
|
},
|
|
}
|
|
_ = exp // historical
|
|
testCases = append(testCases, test{
|
|
name: "float expansion",
|
|
ast: ast,
|
|
fail: true,
|
|
})
|
|
}
|
|
{
|
|
ast := &ExprStr{
|
|
V: "i am: ${sys.hostname()}",
|
|
}
|
|
exp := &ExprCall{
|
|
Name: operatorFuncName,
|
|
Args: []interfaces.Expr{
|
|
&ExprStr{
|
|
V: "+",
|
|
},
|
|
&ExprStr{
|
|
V: "i am: ",
|
|
},
|
|
&ExprCall{
|
|
Name: "sys.hostname",
|
|
Args: []interfaces.Expr{},
|
|
},
|
|
},
|
|
}
|
|
_ = exp // historical
|
|
testCases = append(testCases, test{
|
|
name: "function expansion",
|
|
ast: ast,
|
|
fail: true,
|
|
})
|
|
}
|
|
{
|
|
ast := &ExprStr{
|
|
V: "i am: ${blah(21, 12.3)}",
|
|
}
|
|
exp := &ExprCall{
|
|
Name: operatorFuncName,
|
|
Args: []interfaces.Expr{
|
|
&ExprStr{
|
|
V: "+",
|
|
},
|
|
&ExprStr{
|
|
V: "i am: ",
|
|
},
|
|
&ExprCall{
|
|
Name: "blah",
|
|
Args: []interfaces.Expr{
|
|
&ExprInt{
|
|
V: 21,
|
|
},
|
|
&ExprFloat{
|
|
V: 12.3,
|
|
},
|
|
},
|
|
},
|
|
},
|
|
}
|
|
_ = exp // historical
|
|
testCases = append(testCases, test{
|
|
name: "function expansion arg",
|
|
ast: ast,
|
|
fail: true,
|
|
})
|
|
}
|
|
// FIXME: i am broken, i don't deal well with negatives for some reason
|
|
//{
|
|
// ast := &ExprStr{
|
|
// V: "i am: ${blah(21, -12.3)}",
|
|
// }
|
|
// exp := &ExprCall{
|
|
// Name: operatorFuncName,
|
|
// Args: []interfaces.Expr{
|
|
// &ExprStr{
|
|
// V: "+",
|
|
// },
|
|
// &ExprStr{
|
|
// V: "i am: ",
|
|
// },
|
|
// &ExprCall{
|
|
// Name: "blah",
|
|
// Args: []interfaces.Expr{
|
|
// &ExprInt{
|
|
// V: 21,
|
|
// },
|
|
// &ExprFloat{
|
|
// V: -12.3,
|
|
// },
|
|
// },
|
|
// },
|
|
// },
|
|
// }
|
|
// testCases = append(testCases, test{
|
|
// name: "function expansion arg negative",
|
|
// ast: ast,
|
|
// fail: false,
|
|
// exp: exp,
|
|
// })
|
|
//}
|
|
// FIXME: i am broken :(
|
|
//{
|
|
// ast := &ExprStr{
|
|
// V: "sweetie${-3.14159}", // FIXME: only the negative breaks this
|
|
// }
|
|
// exp := &ExprCall{
|
|
// Name: operatorFuncName,
|
|
// Args: []interfaces.Expr{
|
|
// &ExprStr{
|
|
// V: "+",
|
|
// },
|
|
// &ExprStr{
|
|
// V: "sweetie",
|
|
// },
|
|
// &ExprFloat{
|
|
// V: -3.14159,
|
|
// },
|
|
// },
|
|
// }
|
|
// testCases = append(testCases, test{
|
|
// name: "negative float expansion",
|
|
// ast: ast,
|
|
// fail: false,
|
|
// exp: exp,
|
|
// })
|
|
//}
|
|
// FIXME: i am also broken, but less important
|
|
//{
|
|
// ast := &ExprStr{
|
|
// V: `i am: ${blah(42, "${foo}")}`,
|
|
// }
|
|
// exp := &ExprCall{
|
|
// Name: operatorFuncName,
|
|
// Args: []interfaces.Expr{
|
|
// &ExprStr{
|
|
// V: "+",
|
|
// },
|
|
// &ExprStr{
|
|
// V: "i am: ",
|
|
// },
|
|
// &ExprCall{
|
|
// Name: "blah",
|
|
// Args: []interfaces.Expr{
|
|
// &ExprInt{
|
|
// V: 42,
|
|
// },
|
|
// &ExprVar{
|
|
// Name: "foo",
|
|
// },
|
|
// },
|
|
// },
|
|
// },
|
|
// }
|
|
// testCases = append(testCases, test{
|
|
// name: "function expansion arg with var",
|
|
// ast: ast,
|
|
// fail: false,
|
|
// exp: exp,
|
|
// })
|
|
//}
|
|
|
|
names := []string{}
|
|
for index, tc := range testCases { // run all the tests
|
|
if util.StrInList(tc.name, names) {
|
|
t.Errorf("test #%d: duplicate sub test name of: %s", index, tc.name)
|
|
continue
|
|
}
|
|
names = append(names, tc.name)
|
|
t.Run(fmt.Sprintf("test #%d (%s)", index, tc.name), func(t *testing.T) {
|
|
ast, fail, exp := tc.ast, tc.fail, tc.exp
|
|
|
|
data := &interfaces.Data{
|
|
// TODO: add missing fields here if/when needed
|
|
Debug: testing.Verbose(), // set via the -test.v flag to `go test`
|
|
Logf: func(format string, v ...interface{}) {
|
|
t.Logf("ast: "+format, v...)
|
|
},
|
|
}
|
|
// some of this might happen *after* interpolate in SetScope or Unify...
|
|
if err := ast.Init(data); err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: could not init and validate AST: %+v", index, err)
|
|
return
|
|
}
|
|
|
|
iast, err := ast.Interpolate()
|
|
if !fail && err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: interpolate failed with: %+v", index, err)
|
|
return
|
|
}
|
|
if fail && err == nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: interpolate expected error, not nil", index)
|
|
return
|
|
}
|
|
|
|
// init exp so that the match will look identical...
|
|
if !fail {
|
|
if err := exp.Init(data); err != nil {
|
|
t.Errorf("test #%d: FAIL", index)
|
|
t.Errorf("test #%d: match init failed with: %+v", index, err)
|
|
return
|
|
}
|
|
}
|
|
|
|
if reflect.DeepEqual(iast, exp) {
|
|
return
|
|
}
|
|
// double check because DeepEqual is different since the logf exists
|
|
diff := pretty.Compare(iast, exp)
|
|
if diff == "" { // bonus
|
|
return
|
|
}
|
|
t.Errorf("test #%d: AST did not match expected", index)
|
|
// TODO: consider making our own recursive print function
|
|
t.Logf("test #%d: actual: \n%s", index, spew.Sdump(iast))
|
|
t.Logf("test #%d: expected: \n%s", index, spew.Sdump(exp))
|
|
t.Logf("test #%d: diff:\n%s", index, diff)
|
|
})
|
|
}
|
|
}
|