lang: Port TestAstFunc2 to txtar format

This ports TestAstFunc2 from our home-grown content storage system to
the txtar package. Since a single file can be used to represent the
entire folder hierarchy, this makes it much easier to see and edit
tests.

lang/interpret_test.go

@@ -24,6 +24,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"path/filepath"
 	"sort"
 	"strings"
 	"testing"
@@ -47,6 +48,7 @@ import (
 
 	"github.com/kylelemons/godebug/pretty"
 	"github.com/spf13/afero"
+	"golang.org/x/tools/txtar"
 )
 
 const (
@@ -1049,34 +1051,11 @@ func TestAstFunc2(t *testing.T) {
 		Functions: ast.FuncPrefixToFunctionsScope(""), // runs funcs.LookupPrefix
 	}
 
-	type errs struct {
-		failLexParse    bool
-		failInit        bool
-		failInterpolate bool
-		failSetScope    bool
-		failUnify       bool
-		failGraph       bool
-		failInterpret   bool
-		failAutoEdge    bool
-	}
 	type test struct { // an individual test
 		name string
-		path string // relative sub directory path inside tests dir
-		fail bool
-		//graph *pgraph.Graph
-		expstr string // expected output graph in string format
-		errs   errs
+		path string // relative txtar path inside tests dir
 	}
 	testCases := []test{}
-	//{
-	//	graph, _ := pgraph.NewGraph("g")
-	//	testCases = append(testCases, test{
-	//		name:   "simple hello world",
-	//		path:   "hello0/",
-	//		fail:   false,
-	//		expstr: graph.Sprint(),
-	//	})
-	//}
 
 	// build test array automatically from reading the dir
 	files, err := ioutil.ReadDir(dir)
@@ -1086,108 +1065,22 @@ func TestAstFunc2(t *testing.T) {
 	}
 	sorted := []string{}
 	for _, f := range files {
-		if !f.IsDir() {
+		if f.IsDir() {
 			continue
 		}
+		if !strings.HasSuffix(f.Name(), ".txtar") {
+			continue
+		}
+
 		sorted = append(sorted, f.Name())
 	}
 	sort.Strings(sorted)
 	for _, f := range sorted {
-		graphFile := f + ".output" // expected output graph file
-		graphFileFull := dir + graphFile
-		info, err := os.Stat(graphFileFull)
-		if err != nil || info.IsDir() {
-			p := dir + f + "." + "T" + "O" + "D" + "O"
-			if _, err := os.Stat(p); err == nil {
-				// if it's a WIP, then don't error things
-				t.Logf("missing: %s", p)
-				continue
-			}
-			t.Errorf("missing: %s", graphFile)
-			t.Errorf("(err: %+v)", err)
-			continue
-		}
-		content, err := ioutil.ReadFile(graphFileFull)
-		if err != nil {
-			t.Errorf("could not read graph file: %+v", err)
-			return
-		}
-		str := string(content) // expected graph
-
-		// if the graph file has a magic error string, it's a failure
-		errStr := ""
-		failLexParse := false
-		failInit := false
-		failInterpolate := false
-		failSetScope := false
-		failUnify := false
-		failGraph := false
-		failInterpret := false
-		failAutoEdge := false
-		if strings.HasPrefix(str, magicError) {
-			errStr = strings.TrimPrefix(str, magicError)
-			str = errStr
-
-			if strings.HasPrefix(str, magicErrorLexParse) {
-				errStr = strings.TrimPrefix(str, magicErrorLexParse)
-				str = errStr
-				failLexParse = true
-			}
-			if strings.HasPrefix(str, magicErrorInit) {
-				errStr = strings.TrimPrefix(str, magicErrorInit)
-				str = errStr
-				failInit = true
-			}
-			if strings.HasPrefix(str, magicInterpolate) {
-				errStr = strings.TrimPrefix(str, magicInterpolate)
-				str = errStr
-				failInterpolate = true
-			}
-			if strings.HasPrefix(str, magicErrorSetScope) {
-				errStr = strings.TrimPrefix(str, magicErrorSetScope)
-				str = errStr
-				failSetScope = true
-			}
-			if strings.HasPrefix(str, magicErrorUnify) {
-				errStr = strings.TrimPrefix(str, magicErrorUnify)
-				str = errStr
-				failUnify = true
-			}
-			if strings.HasPrefix(str, magicErrorGraph) {
-				errStr = strings.TrimPrefix(str, magicErrorGraph)
-				str = errStr
-				failGraph = true
-			}
-			if strings.HasPrefix(str, magicErrorInterpret) {
-				errStr = strings.TrimPrefix(str, magicErrorInterpret)
-				str = errStr
-				failInterpret = true
-			}
-			if strings.HasPrefix(str, magicErrorAutoEdge) {
-				errStr = strings.TrimPrefix(str, magicErrorAutoEdge)
-				str = errStr
-				failAutoEdge = true
-			}
-		}
-
 		// add automatic test case
 		testCases = append(testCases, test{
-			name:   fmt.Sprintf("dir: %s", f),
-			path:   f + "/",
-			fail:   errStr != "",
-			expstr: str,
-			errs: errs{
-				failLexParse:    failLexParse,
-				failInit:        failInit,
-				failInterpolate: failInterpolate,
-				failSetScope:    failSetScope,
-				failUnify:       failUnify,
-				failGraph:       failGraph,
-				failInterpret:   failInterpret,
-				failAutoEdge:    failAutoEdge,
-			},
+			name: fmt.Sprintf("%s", f),
+			path: f, // <something>.txtar
 		})
-		//t.Logf("adding: %s", f + "/")
 	}
 
 	if testing.Short() {
@@ -1216,16 +1109,105 @@ func TestAstFunc2(t *testing.T) {
 			continue
 		}
 		t.Run(testName, func(t *testing.T) {
-			name, path, fail, expstr, errs := tc.name, tc.path, tc.fail, strings.Trim(tc.expstr, "\n"), tc.errs
-			src := dir + path // location of the test
-			failLexParse := errs.failLexParse
-			failInit := errs.failInit
-			failInterpolate := errs.failInterpolate
-			failSetScope := errs.failSetScope
-			failUnify := errs.failUnify
-			failGraph := errs.failGraph
-			failInterpret := errs.failInterpret
-			failAutoEdge := errs.failAutoEdge
+			name, path := tc.name, tc.path
+			tmpdir := t.TempDir() // gets cleaned up at end, new dir for each call
+			src := tmpdir         // location of the test
+			txtarFile := dir + path
+
+			archive, err := txtar.ParseFile(txtarFile)
+			if err != nil {
+				t.Errorf("err parsing txtar(%s): %+v", txtarFile, err)
+				return
+			}
+			comment := strings.TrimSpace(string(archive.Comment))
+			t.Logf("comment: %s\n", comment)
+
+			// copy files out into the test temp directory
+			var testOutput []byte
+			found := false
+			for _, file := range archive.Files {
+				if file.Name == "OUTPUT" {
+					testOutput = file.Data
+					found = true
+					continue
+				}
+
+				name := filepath.Join(tmpdir, file.Name)
+				dir := filepath.Dir(name)
+				if err := os.MkdirAll(dir, 0770); err != nil {
+					t.Errorf("err making dir(%s): %+v", dir, err)
+					return
+				}
+				if err := ioutil.WriteFile(name, file.Data, 0660); err != nil {
+					t.Errorf("err writing file(%s): %+v", name, err)
+					return
+				}
+			}
+
+			if !found { // skip missing tests
+				return
+			}
+
+			expstr := string(testOutput) // expected graph
+
+			// if the graph file has a magic error string, it's a failure
+			errStr := ""
+			failLexParse := false
+			failInit := false
+			failInterpolate := false
+			failSetScope := false
+			failUnify := false
+			failGraph := false
+			failInterpret := false
+			failAutoEdge := false
+			if strings.HasPrefix(expstr, magicError) {
+				errStr = strings.TrimPrefix(expstr, magicError)
+				expstr = errStr
+
+				if strings.HasPrefix(expstr, magicErrorLexParse) {
+					errStr = strings.TrimPrefix(expstr, magicErrorLexParse)
+					expstr = errStr
+					failLexParse = true
+				}
+				if strings.HasPrefix(expstr, magicErrorInit) {
+					errStr = strings.TrimPrefix(expstr, magicErrorInit)
+					expstr = errStr
+					failInit = true
+				}
+				if strings.HasPrefix(expstr, magicInterpolate) {
+					errStr = strings.TrimPrefix(expstr, magicInterpolate)
+					expstr = errStr
+					failInterpolate = true
+				}
+				if strings.HasPrefix(expstr, magicErrorSetScope) {
+					errStr = strings.TrimPrefix(expstr, magicErrorSetScope)
+					expstr = errStr
+					failSetScope = true
+				}
+				if strings.HasPrefix(expstr, magicErrorUnify) {
+					errStr = strings.TrimPrefix(expstr, magicErrorUnify)
+					expstr = errStr
+					failUnify = true
+				}
+				if strings.HasPrefix(expstr, magicErrorGraph) {
+					errStr = strings.TrimPrefix(expstr, magicErrorGraph)
+					expstr = errStr
+					failGraph = true
+				}
+				if strings.HasPrefix(expstr, magicErrorInterpret) {
+					errStr = strings.TrimPrefix(expstr, magicErrorInterpret)
+					expstr = errStr
+					failInterpret = true
+				}
+				if strings.HasPrefix(expstr, magicErrorAutoEdge) {
+					errStr = strings.TrimPrefix(expstr, magicErrorAutoEdge)
+					expstr = errStr
+					failAutoEdge = true
+				}
+			}
+
+			fail := errStr != ""
+			expstr = strings.Trim(expstr, "\n")
 
 			t.Logf("\n\ntest #%d (%s) ----------------\npath: %s\n\n", index, name, src)
 

lang/interpret_test/TestAstFunc2/basic-conditional-scoped-lambda-args.output

@@ -1 +0,0 @@
-Vertex: test[worldwide]

lang/interpret_test/TestAstFunc2/basic-conditional-scoped-lambda-args.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $some_bool = false
 $fn = if $some_bool {
 	func($b) {
@@ -11,3 +12,5 @@ $fn = if $some_bool {
 
 $out = $fn("wide")
 test $out {}
+-- OUTPUT --
+Vertex: test[worldwide]

lang/interpret_test/TestAstFunc2/basic-conditional-scoped-lambda.output

@@ -1 +0,0 @@
-Vertex: test[world]

lang/interpret_test/TestAstFunc2/basic-conditional-scoped-lambda.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $some_bool = false
 $fn = if $some_bool {
 	func($b) {
@@ -11,3 +12,5 @@ $fn = if $some_bool {
 
 $out = $fn(false)
 test $out {}
+-- OUTPUT --
+Vertex: test[world]

lang/interpret_test/TestAstFunc2/chained-returned-funcs.output

@@ -1 +0,0 @@
-Vertex: test[hello]

lang/interpret_test/TestAstFunc2/chained-returned-funcs.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 func funcgen() {
 	func() {
 		func() {
@@ -11,3 +12,5 @@ $fn2 = $fn1()
 $out = $fn2()
 
 test $out {}
+-- OUTPUT --
+Vertex: test[hello]

lang/interpret_test/TestAstFunc2/chained-returned-lambdas.output

@@ -1 +0,0 @@
-Vertex: test[hello]

lang/interpret_test/TestAstFunc2/chained-returned-lambdas.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # simple function definition containing function to be returned
 $funcgen = func() {
 	func() {
@@ -15,3 +16,5 @@ $fn3 = $fn2()
 $out = $fn3()
 
 test $out {}
+-- OUTPUT --
+Vertex: test[hello]

lang/interpret_test/TestAstFunc2/chained-returned-scoped-lambdas.output

@@ -1,4 +0,0 @@
-Vertex: test[hey]
-Vertex: test[there]
-Vertex: test[wow: hello]
-Vertex: test[wow: world]

lang/interpret_test/TestAstFunc2/chained-returned-scoped-lambdas.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $funcgen = func() {
 	func($a) {
 		if $a {
@@ -36,3 +37,8 @@ test $out1() {} # hey
 test $out2() {} # there
 test $out3() {} # wow: hello
 test $out4() {} # wow: world
+-- OUTPUT --
+Vertex: test[hey]
+Vertex: test[there]
+Vertex: test[wow: hello]
+Vertex: test[wow: world]

lang/interpret_test/TestAstFunc2/changing-func.output

@@ -1,2 +0,0 @@
-Vertex: test[hello]
-Vertex: test[world]

lang/interpret_test/TestAstFunc2/changing-func.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # this can return changing functions, and could be optimized, too
 func funcgen($b) {
 	if $b {
@@ -19,3 +20,6 @@ $out2 = $fn2()
 
 test $out1 {}
 test $out2 {}
+-- OUTPUT --
+Vertex: test[hello]
+Vertex: test[world]

lang/interpret_test/TestAstFunc2/changing-lambda.output

@@ -1,2 +0,0 @@
-Vertex: test[hello]
-Vertex: test[world]

lang/interpret_test/TestAstFunc2/changing-lambda.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # this can return changing functions, and could be optimized, too
 $funcgen = func($b) {
 	if $b {
@@ -19,3 +20,6 @@ $out2 = $fn2()
 
 test $out1 {}
 test $out2 {}
+-- OUTPUT --
+Vertex: test[hello]
+Vertex: test[world]

lang/interpret_test/TestAstFunc2/changing-scoped-lambda.output

@@ -1,4 +0,0 @@
-Vertex: test[true-true]
-Vertex: test[true-false]
-Vertex: test[false-true]
-Vertex: test[false-false]

lang/interpret_test/TestAstFunc2/changing-scoped-lambda.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # this can return changing functions, and could be optimized, too
 $funcgen = func($a) {
 	if $a {
@@ -39,3 +40,8 @@ test $out1() {}
 test $out2() {}
 test $out3() {}
 test $out4() {}
+-- OUTPUT --
+Vertex: test[true-true]
+Vertex: test[true-false]
+Vertex: test[false-true]
+Vertex: test[false-false]

lang/interpret_test/TestAstFunc2/class-capture1.output

@@ -1 +0,0 @@
-Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture1.txtar

@@ -1,5 +1,8 @@
-include foo
+-- main.mcl --
+$x1 = "t1"
 class foo {
 	test $x1 {}
 }
-$x1 = "t1"
+include foo
+-- OUTPUT --
+Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture2.output

@@ -1 +0,0 @@
-Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture2.txtar

@@ -1,5 +1,8 @@
-$x1 = "t1"
+-- main.mcl --
+include foo
 class foo {
 	test $x1 {}
 }
-include foo
+$x1 = "t1"
+-- OUTPUT --
+Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture3.output

@@ -1 +0,0 @@
-Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture3.txtar

@@ -1,5 +1,8 @@
+-- main.mcl --
 $x1 = "bad1"
 class foo($x1) {
 	test $x1 {}
 }
 include foo("t1")
+-- OUTPUT --
+Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture4.output

@@ -1,2 +0,0 @@
-Vertex: test[t1]
-Vertex: test[t2]

lang/interpret_test/TestAstFunc2/class-capture4.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $x1 = "t1"
 class foo {
 	test $x1 {}
@@ -5,3 +6,6 @@ class foo {
 }
 include foo
 $x2 = "t2"
+-- OUTPUT --
+Vertex: test[t1]
+Vertex: test[t2]

lang/interpret_test/TestAstFunc2/class-capture5.output

@@ -1,2 +0,0 @@
-Vertex: test[t1: t1]
-Vertex: test[t2: t2]

lang/interpret_test/TestAstFunc2/class-capture5.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $x1 = "bad1"
 class foo($x1, $x2) {
 	test "t1: " + $x2 {} # swapped
@@ -5,3 +6,6 @@ class foo($x1, $x2) {
 }
 include foo($x2, "t1")
 $x2 = "t2"
+-- OUTPUT --
+Vertex: test[t1: t1]
+Vertex: test[t2: t2]

lang/interpret_test/TestAstFunc2/class-capture6.output

@@ -1,3 +0,0 @@
-Vertex: test[t0: t0]
-Vertex: test[t1: t1]
-Vertex: test[t2: t2]

lang/interpret_test/TestAstFunc2/class-capture6.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $x1 = "bad1"
 class foo($x1, $x2) {
 	include bar
@@ -10,3 +11,7 @@ class foo($x1, $x2) {
 include foo("t1", $x2)
 $x2 = "t2"
 $x0 = "t0"
+-- OUTPUT --
+Vertex: test[t0: t0]
+Vertex: test[t1: t1]
+Vertex: test[t2: t2]

lang/interpret_test/TestAstFunc2/class-capture7.output

@@ -1 +0,0 @@
-# err: errSetScope: class `bar` does not exist in this scope

lang/interpret_test/TestAstFunc2/class-capture7.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 class foo {
 	test "t1" {}
 	class bar { # unused definition
@@ -7,3 +8,5 @@ class foo {
 include foo
 # This sort of thing is not currently supported, and not sure if it ever will.
 include bar # nope!
+-- OUTPUT --
+# err: errSetScope: class `bar` does not exist in this scope

lang/interpret_test/TestAstFunc2/class-capture8.output

@@ -1 +0,0 @@
-Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture8.txtar

@@ -0,0 +1,12 @@
+-- main.mcl --
+$x1 = "bad1"
+include defs.foo
+
+import "defs.mcl" # out of order for fun
+-- defs.mcl --
+class foo {
+	test $x1 {} # capture the var
+}
+$x1 = "t1"
+-- OUTPUT --
+Vertex: test[t1]

lang/interpret_test/TestAstFunc2/class-capture8/defs.mcl

@@ -1,4 +0,0 @@
-class foo {
-	test $x1 {} # capture the var
-}
-$x1 = "t1"

lang/interpret_test/TestAstFunc2/class-capture8/main.mcl

@@ -1,4 +0,0 @@
-$x1 = "bad1"
-include defs.foo
-
-import "defs.mcl" # out of order for fun

lang/interpret_test/TestAstFunc2/class-recursion1.output

@@ -1 +0,0 @@
-# err: errSetScope: recursive reference while setting scope: not a dag

lang/interpret_test/TestAstFunc2/class-recursion1.txtar

@@ -0,0 +1,9 @@
+-- main.mcl --
+class c1 {
+	include c2
+}
+class c2 {
+	include c1
+}
+-- OUTPUT --
+# err: errSetScope: recursive reference while setting scope: not a dag

lang/interpret_test/TestAstFunc2/class-recursion1/main.mcl

@@ -1,6 +0,0 @@
-class c1 {
-	include c2
-}
-class c2 {
-	include c1
-}

lang/interpret_test/TestAstFunc2/class-recursion2.output

@@ -1 +0,0 @@
-# err: errSetScope: recursive reference while setting scope: not a dag

lang/interpret_test/TestAstFunc2/class-recursion2.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 class c1($cond) {
 	test "nope" {}
 	if $cond {
@@ -7,3 +8,5 @@ class c1($cond) {
 	}
 }
 include c1(true)
+-- OUTPUT --
+# err: errSetScope: recursive reference while setting scope: not a dag

lang/interpret_test/TestAstFunc2/class-shadowing1.output

@@ -1 +0,0 @@
-Vertex: test[d]

lang/interpret_test/TestAstFunc2/class-shadowing1.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $msg = "a"
 class shadowme($msg) {
 	$msg = "c"
@@ -8,3 +9,5 @@ class shadowme($msg) {
 }
 
 include shadowme("b")
+-- OUTPUT --
+Vertex: test[d]

lang/interpret_test/TestAstFunc2/class-shadowing2.output

@@ -1 +0,0 @@
-Vertex: test[c]

lang/interpret_test/TestAstFunc2/class-shadowing2.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $msg = "a"
 class shadowme($msg) {
 	$msg = "c"
@@ -8,3 +9,5 @@ class shadowme($msg) {
 }
 
 include shadowme("b")
+-- OUTPUT --
+Vertex: test[c]

lang/interpret_test/TestAstFunc2/class-shadowing3.output

@@ -1,2 +0,0 @@
-Vertex: test[a]
-Vertex: test[hello]

lang/interpret_test/TestAstFunc2/class-shadowing3.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $foo = "a"
 
 class c1($cond) {
@@ -15,3 +16,6 @@ include c1(true)
 # but little value.
 
 test $foo {}
+-- OUTPUT --
+Vertex: test[a]
+Vertex: test[hello]

lang/interpret_test/TestAstFunc2/complex-conditional-scoped-lambda.output

@@ -1,3 +0,0 @@
-Vertex: test[hello purpleidea]
-Vertex: test[hello user]
-Vertex: test[who is there?]

lang/interpret_test/TestAstFunc2/complex-conditional-scoped-lambda.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $funcgen = func() {
 	func($b) {
 		"hello" + " " + "world"
@@ -28,3 +29,7 @@ $out3 = $fn("")
 test $out1 {}
 test $out2 {}
 test $out3 {}
+-- OUTPUT --
+Vertex: test[hello purpleidea]
+Vertex: test[hello user]
+Vertex: test[who is there?]

lang/interpret_test/TestAstFunc2/conditional-scoped-lambda-ooo.output

@@ -1,2 +0,0 @@
-Vertex: test[so true]
-Vertex: test[so false]

lang/interpret_test/TestAstFunc2/conditional-scoped-lambda-ooo.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # out of order
 $out1 = $fn(true)
 $some_bool = false
@@ -25,3 +26,6 @@ $funcgen = func() {
 
 test $out1 {}
 test $out2 {}
+-- OUTPUT --
+Vertex: test[so true]
+Vertex: test[so false]

lang/interpret_test/TestAstFunc2/conditional-scoped-lambda.output

@@ -1,2 +0,0 @@
-Vertex: test[so true]
-Vertex: test[so false]

lang/interpret_test/TestAstFunc2/conditional-scoped-lambda.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $funcgen = func() {
 	func($b) {
 		if $b {
@@ -25,3 +26,6 @@ $out2 = $fn(false)
 
 test $out1 {}
 test $out2 {}
+-- OUTPUT --
+Vertex: test[so true]
+Vertex: test[so false]

lang/interpret_test/TestAstFunc2/const1.output

@@ -1 +0,0 @@
-Vertex: test[exists]

lang/interpret_test/TestAstFunc2/const1.txtar

@@ -1,2 +1,5 @@
+-- main.mcl --
 # this magic string variable should exist and be "exists"
 test $const.res.file.state.exists {}
+-- OUTPUT --
+Vertex: test[exists]

lang/interpret_test/TestAstFunc2/contains0.output

@@ -1,4 +0,0 @@
-Vertex: test[passed1]
-Vertex: test[passed2]
-Vertex: test[passed3]
-Vertex: test[passed4]

lang/interpret_test/TestAstFunc2/contains0.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $ints = [13, 42, 0, -37,]
 
 $s1 = if contains(42, $ints) {
@@ -35,3 +36,8 @@ test $s1 {} # passed
 test $s2 {} # passed
 test $s3 {} # passed
 test $s4 {} # passed
+-- OUTPUT --
+Vertex: test[passed1]
+Vertex: test[passed2]
+Vertex: test[passed3]
+Vertex: test[passed4]

lang/interpret_test/TestAstFunc2/deploy-readfile0.output

@@ -1,3 +0,0 @@
-Vertex: test[This is file1 in the files/ folder.]
-Vertex: test[This is file2 in the files/ folder.]
-Vertex: test[This is file3 in the files/ folder inside of the mod1/ module.]

lang/interpret_test/TestAstFunc2/deploy-readfile0.txtar

@@ -1,3 +1,6 @@
+-- metadata.yaml --
+#files: "files/"	# these are some extra files we can use (is the default)
+-- main.mcl --
 import "golang/strings"
 import "deploy"
 import "second.mcl"
@@ -51,3 +54,29 @@ test strings.trim_space($x3) {}
 #test "f3" {
 #	anotherstr => $x3,
 #}
+-- second.mcl --
+import "deploy"
+
+# relative paths for us
+$f = "/files/file2" # real file is here as well
+$f2 = deploy.abspath($f)
+$x2 = deploy.readfile($f)
+-- files/file1 --
+This is file1 in the files/ folder.
+-- files/file2 --
+This is file2 in the files/ folder.
+-- mod1/metadata.yaml --
+#files: "files/"	# these are some extra files we can use (is the default)
+-- mod1/main.mcl --
+import "deploy"
+
+# relative paths for us
+$f = "/files/file3" # real file is in: /mod1/files/file3
+$f3 = deploy.abspath($f)
+$x3 = deploy.readfile($f)
+-- mod1/files/file3 --
+This is file3 in the files/ folder inside of the mod1/ module.
+-- OUTPUT --
+Vertex: test[This is file1 in the files/ folder.]
+Vertex: test[This is file2 in the files/ folder.]
+Vertex: test[This is file3 in the files/ folder inside of the mod1/ module.]

lang/interpret_test/TestAstFunc2/deploy-readfile0/files/file1

@@ -1 +0,0 @@
-This is file1 in the files/ folder.

lang/interpret_test/TestAstFunc2/deploy-readfile0/files/file2

@@ -1 +0,0 @@
-This is file2 in the files/ folder.

lang/interpret_test/TestAstFunc2/deploy-readfile0/metadata.yaml

@@ -1 +0,0 @@
-#files: "files/"	# these are some extra files we can use (is the default)

lang/interpret_test/TestAstFunc2/deploy-readfile0/mod1/files/file3

@@ -1 +0,0 @@
-This is file3 in the files/ folder inside of the mod1/ module.

lang/interpret_test/TestAstFunc2/deploy-readfile0/mod1/main.mcl

@@ -1,6 +0,0 @@
-import "deploy"
-
-# relative paths for us
-$f = "/files/file3" # real file is in: /mod1/files/file3
-$f3 = deploy.abspath($f)
-$x3 = deploy.readfile($f)

lang/interpret_test/TestAstFunc2/deploy-readfile0/mod1/metadata.yaml

@@ -1 +0,0 @@
-#files: "files/"	# these are some extra files we can use (is the default)

lang/interpret_test/TestAstFunc2/deploy-readfile0/second.mcl

@@ -1,6 +0,0 @@
-import "deploy"
-
-# relative paths for us
-$f = "/files/file2" # real file is here as well
-$f2 = deploy.abspath($f)
-$x2 = deploy.readfile($f)

lang/interpret_test/TestAstFunc2/deploy-readfile1.output

@@ -1,3 +0,0 @@
-Vertex: test[This is a different file1 in the files/ folder.]
-Vertex: test[This is a different file2 in the files/ folder.]
-Vertex: test[This is a different file3 in the files/ folder inside of the mod1/ module.]

lang/interpret_test/TestAstFunc2/deploy-readfile1.txtar

@@ -1,3 +1,6 @@
+-- metadata.yaml --
+#files: "files/"	# these are some extra files we can use (is the default)
+-- main.mcl --
 import "golang/strings"
 import "deploy"
 import "second.mcl"
@@ -51,3 +54,29 @@ test strings.trim_space($x3) {}
 #test "f3" {
 #	anotherstr => $x3,
 #}
+-- second.mcl --
+import "deploy"
+
+# relative paths for us
+$f = "/files/file2" # real file is here as well
+$f2 = deploy.abspath($f)
+$x2 = deploy.readfile($f)
+-- files/file1 --
+This is a different file1 in the files/ folder.
+-- files/file2 --
+This is a different file2 in the files/ folder.
+-- mod1/metadata.yaml --
+#files: "files/"	# these are some extra files we can use (is the default)
+-- mod1/main.mcl --
+import "deploy"
+
+# relative paths for us
+$f = "/files/file3" # real file is in: /mod1/files/file3
+$f3 = deploy.abspath($f)
+$x3 = deploy.readfile($f)
+-- mod1/files/file3 --
+This is a different file3 in the files/ folder inside of the mod1/ module.
+-- OUTPUT --
+Vertex: test[This is a different file1 in the files/ folder.]
+Vertex: test[This is a different file2 in the files/ folder.]
+Vertex: test[This is a different file3 in the files/ folder inside of the mod1/ module.]

lang/interpret_test/TestAstFunc2/deploy-readfile1/files/file1

@@ -1 +0,0 @@
-This is a different file1 in the files/ folder.

lang/interpret_test/TestAstFunc2/deploy-readfile1/files/file2

@@ -1 +0,0 @@
-This is a different file2 in the files/ folder.

lang/interpret_test/TestAstFunc2/deploy-readfile1/metadata.yaml

@@ -1 +0,0 @@
-#files: "files/"	# these are some extra files we can use (is the default)

lang/interpret_test/TestAstFunc2/deploy-readfile1/mod1/files/file3

@@ -1 +0,0 @@
-This is a different file3 in the files/ folder inside of the mod1/ module.

lang/interpret_test/TestAstFunc2/deploy-readfile1/mod1/main.mcl

@@ -1,6 +0,0 @@
-import "deploy"
-
-# relative paths for us
-$f = "/files/file3" # real file is in: /mod1/files/file3
-$f3 = deploy.abspath($f)
-$x3 = deploy.readfile($f)

lang/interpret_test/TestAstFunc2/deploy-readfile1/mod1/metadata.yaml

@@ -1 +0,0 @@
-#files: "files/"	# these are some extra files we can use (is the default)

lang/interpret_test/TestAstFunc2/deploy-readfile1/second.mcl

@@ -1,6 +0,0 @@
-import "deploy"
-
-# relative paths for us
-$f = "/files/file2" # real file is here as well
-$f2 = deploy.abspath($f)
-$x2 = deploy.readfile($f)

lang/interpret_test/TestAstFunc2/efficient-function.output

@@ -1,2 +0,0 @@
-Vertex: test[hello:a]
-Vertex: test[hello:b]

lang/interpret_test/TestAstFunc2/efficient-function.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 $prefix = "hello"
 
 func prefixer($x) {
@@ -9,3 +10,6 @@ $out2 = prefixer("b")
 
 test $out1 {} # hello:a
 test $out2 {} # hello:b
+-- OUTPUT --
+Vertex: test[hello:a]
+Vertex: test[hello:b]

lang/interpret_test/TestAstFunc2/efficient-lambda.output

@@ -1,2 +0,0 @@
-Vertex: test[helloa]
-Vertex: test[hellob]

lang/interpret_test/TestAstFunc2/efficient-lambda.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # this should be a function as a value, iow a lambda
 $prefixer = func($x) {
 	"hello" + $x	# i'd only ever expect one "hello" string in the graph
@@ -8,3 +9,6 @@ $out2 = $prefixer("b")
 
 test $out1 {} # helloa
 test $out2 {} # hellob
+-- OUTPUT --
+Vertex: test[helloa]
+Vertex: test[hellob]

lang/interpret_test/TestAstFunc2/empty-edge-list-0.txtar

@@ -1,3 +1,23 @@
+-- main.mcl --
+# this must pass type unification and generate output
+
+# single resource
+test "name" {}
+
+# single resource, defined by list variable
+$names = ["hey", "there",]
+test $names {}
+
+# multiples resources, defined by list
+test ["hello", "world",] {
+	Depend => Test[$names],
+}
+
+$morenames = ["wow", "cool", "amazing",]
+test $morenames {}
+
+Test[$names] -> Test[$morenames]
+-- OUTPUT --
 Edge: test[hey] -> test[amazing] # test[hey] -> test[amazing]
 Edge: test[hey] -> test[cool] # test[hey] -> test[cool]
 Edge: test[hey] -> test[hello] # test[hey] -> test[hello]

lang/interpret_test/TestAstFunc2/empty-edge-list-0/main.mcl

@@ -1,18 +0,0 @@
-# this must pass type unification and generate output
-
-# single resource
-test "name" {}
-
-# single resource, defined by list variable
-$names = ["hey", "there",]
-test $names {}
-
-# multiples resources, defined by list
-test ["hello", "world",] {
-	Depend => Test[$names],
-}
-
-$morenames = ["wow", "cool", "amazing",]
-test $morenames {}
-
-Test[$names] -> Test[$morenames]

lang/interpret_test/TestAstFunc2/empty-list.output

@@ -1 +0,0 @@
-Vertex: test[name]

lang/interpret_test/TestAstFunc2/empty-list.txtar

@@ -1,5 +1,8 @@
+-- main.mcl --
 # make sure the engine works with empty values
 test "name" {
 	slicestring => [],	# empty list
 	mapintfloat => {},	# empty map
 }
+-- OUTPUT --
+Vertex: test[name]

lang/interpret_test/TestAstFunc2/escaping0.output

@@ -1 +0,0 @@
-Vertex: test[x: This is x]

lang/interpret_test/TestAstFunc2/escaping0.txtar

@@ -0,0 +1,6 @@
+-- main.mcl --
+# escaping example
+$x = "This is x"
+test "x: ${x}" {}
+-- OUTPUT --
+Vertex: test[x: This is x]

lang/interpret_test/TestAstFunc2/escaping0/main.mcl

@@ -1,3 +0,0 @@
-# escaping example
-$x = "This is x"
-test "x: ${x}" {}

lang/interpret_test/TestAstFunc2/escaping1.output

@@ -1,26 +0,0 @@
-Vertex: test[A: ${test}]
-Vertex: test[B: $]
-Vertex: test[C: This is c1]
-Vertex: test[D: \$]
-Vertex: test[E: {}]
-Vertex: test[F: hello]
-Vertex: test[G: This is g1 EOF]
-Vertex: test[H: {hhh} EOF]
-Vertex: test[I: This is ii EOF]
-Vertex: test[J: $ is a dollar sign]
-Vertex: test[K: $ {zzz} EOF]
-Vertex: test[L: $$This is l1 EOF]
-Vertex: test[M: $ $$]
-Vertex: test[N: hello " world]
-Vertex: test[O: hello "" world]
-Vertex: test[P: hello \ world]
-Vertex: test[Q: hello \\ world]
-Vertex: test[R: \This is r1 EOF]
-Vertex: test[S: \$ EOF]
-Vertex: test[T: newline
-EOF]
-Vertex: test[U: tab	\	tabEOF]
-Vertex: test[W: \$]
-Vertex: test[X: $This is x1 EOF]
-Vertex: test[Y: ${unused} EOF]
-Vertex: test[Z: $$$]

lang/interpret_test/TestAstFunc2/escaping1.txtar

@@ -1,3 +1,4 @@
+-- main.mcl --
 # escaping examples
 
 test "A: \${test}" {}
@@ -60,3 +61,30 @@ $y1 = "{unused}"
 test "Y: $${y1} EOF" {} # check there isn't double parsing
 
 test "Z: $$$" {}
+-- OUTPUT --
+Vertex: test[A: ${test}]
+Vertex: test[B: $]
+Vertex: test[C: This is c1]
+Vertex: test[D: \$]
+Vertex: test[E: {}]
+Vertex: test[F: hello]
+Vertex: test[G: This is g1 EOF]
+Vertex: test[H: {hhh} EOF]
+Vertex: test[I: This is ii EOF]
+Vertex: test[J: $ is a dollar sign]
+Vertex: test[K: $ {zzz} EOF]
+Vertex: test[L: $$This is l1 EOF]
+Vertex: test[M: $ $$]
+Vertex: test[N: hello " world]
+Vertex: test[O: hello "" world]
+Vertex: test[P: hello \ world]
+Vertex: test[Q: hello \\ world]
+Vertex: test[R: \This is r1 EOF]
+Vertex: test[S: \$ EOF]
+Vertex: test[T: newline
+EOF]
+Vertex: test[U: tab	\	tabEOF]
+Vertex: test[W: \$]
+Vertex: test[X: $This is x1 EOF]
+Vertex: test[Y: ${unused} EOF]
+Vertex: test[Z: $$$]

lang/interpret_test/TestAstFunc2/escaping2.output

@@ -1 +0,0 @@
-# err: errInterpolate: parser failed: cannot parse string: X: ${foo()}

lang/interpret_test/TestAstFunc2/escaping2.txtar

@@ -0,0 +1,5 @@
+-- main.mcl --
+# this is invalid (you can't have a function inside a var lookup)
+test "X: ${foo()}" {}
+-- OUTPUT --
+# err: errInterpolate: parser failed: cannot parse string: X: ${foo()}

lang/interpret_test/TestAstFunc2/escaping2/main.mcl

@@ -1,2 +0,0 @@
-# this is invalid (you can't have a function inside a var lookup)
-test "X: ${foo()}" {}

lang/interpret_test/TestAstFunc2/escaping3.output

@@ -1 +0,0 @@
-# err: errInterpolate: parser failed: cannot parse string: X: ${}

lang/interpret_test/TestAstFunc2/escaping3.txtar

@@ -0,0 +1,5 @@
+-- main.mcl --
+# this is invalid (you can't have an empty var lookup)
+test "X: ${}" {}
+-- OUTPUT --
+# err: errInterpolate: parser failed: cannot parse string: X: ${}

lang/interpret_test/TestAstFunc2/escaping3/main.mcl

@@ -1,2 +0,0 @@
-# this is invalid (you can't have an empty var lookup)
-test "X: ${}" {}

lang/interpret_test/TestAstFunc2/escaping4.output

@@ -1 +0,0 @@
-# err: errInterpolate: parser failed: unknown escape sequence: \z

lang/interpret_test/TestAstFunc2/escaping4.txtar

@@ -0,0 +1,5 @@
+-- main.mcl --
+# this is invalid (you can't escape a z, right?)
+test "X: \z" {}
+-- OUTPUT --
+# err: errInterpolate: parser failed: unknown escape sequence: \z

lang/interpret_test/TestAstFunc2/escaping4/main.mcl

@@ -1,2 +0,0 @@
-# this is invalid (you can't escape a z, right?)
-test "X: \z" {}

lang/interpret_test/TestAstFunc2/escaping5.output

@@ -1 +0,0 @@
-# err: errInterpolate: parser failed: unknown escape sequence: \j

lang/interpret_test/TestAstFunc2/escaping5.txtar

@@ -0,0 +1,5 @@
+-- main.mcl --
+# this is invalid (there's no \j escape sequence)
+test "X: there is no \j sequence" {}
+-- OUTPUT --
+# err: errInterpolate: parser failed: unknown escape sequence: \j

lang/interpret_test/TestAstFunc2/escaping5/main.mcl

@@ -1,2 +0,0 @@
-# this is invalid (there's no \j escape sequence)
-test "X: there is no \j sequence" {}

lang/interpret_test/TestAstFunc2/example.txtar

@@ -0,0 +1,12 @@
+some comment can go here!
+
+-- main.mcl --
+import "fmt"
+
+test fmt.printf("answer: %d", 42) {}
+-- files/file1 --
+this is file1
+-- files/file2 --
+this is file2
+-- OUTPUT --
+Vertex: test[answer: 42]