lang: Unnested the core package from the functions dir

The core package could contain non-functions, so we might as well move
it upwards.

lang/core/regexp/match_func_test.go

@@ -0,0 +1,75 @@
+// Mgmt
+// Copyright (C) 2013-2024+ James Shubin and the project contributors
+// Written by James Shubin <james@shubin.ca> and the project contributors
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+package coreregexp
+
+import (
+	"testing"
+
+	"github.com/purpleidea/mgmt/lang/types"
+)
+
+func TestMatch0(t *testing.T) {
+	values := []struct {
+		pattern  string
+		s        string
+		expected bool
+	}{
+		{
+			"(mgmt){2}",
+			"mgmt",
+			false,
+		},
+		{
+			"(mgmt){2}",
+			"mgmtmgmt",
+			true,
+		},
+		{
+			"(mgmt){2}",
+			"mgmtmgmtmgmt",
+			true,
+		},
+		{
+			`^db\d+\.example\.com$`,
+			"db1.example.com",
+			true,
+		},
+		{
+			`^db\d+\.example\.com$`,
+			"dbX.example.com",
+			false,
+		},
+		{
+			`^db\d+\.example\.com$`,
+			"db1.exampleXcom",
+			false,
+		},
+	}
+
+	for i, x := range values {
+		pattern := &types.StrValue{V: x.pattern}
+		s := &types.StrValue{V: x.s}
+		val, err := Match([]types.Value{pattern, s})
+		if err != nil {
+			t.Errorf("test index %d failed with: %+v", i, err)
+		}
+		if a, b := x.expected, val.Bool(); a != b {
+			t.Errorf("test index %d expected %t, got %t", i, a, b)
+		}
+	}
+}