internal/core: add explicit txtar test

This explicitly tests field ordering behaviour. Change-Id: I62874dca7410565a0b4b3ab4668a420169f97508 Signed-off-by: Matthew Sackman <[email protected]> Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1202994 TryBot-Result: CUEcueckoo <[email protected]> Unity-Result: CUE porcuepine <[email protected]> Reviewed-by: Marcel van Lohuizen <[email protected]>
cue-lang · Nov 5, 2024 · b780c0a · b780c0a
1 parent edad6fc
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diff --git a/internal/core/toposort/sort_test.go b/internal/core/toposort/sort_test.go
@@ -0,0 +1,74 @@
+// Copyright 2024 CUE Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package toposort_test
+
+import (
+	"fmt"
+	"testing"
+
+	"cuelang.org/go/cue/format"
+	"cuelang.org/go/internal/core/eval"
+	"cuelang.org/go/internal/core/export"
+	"cuelang.org/go/internal/cueexperiment"
+	"cuelang.org/go/internal/cuetdtest"
+	"cuelang.org/go/internal/cuetxtar"
+)
+
+func TestTopologicalSort(t *testing.T) {
+	cueexperiment.Init()
+	saved := cueexperiment.Flags.TopoSort
+	defer func() { cueexperiment.Flags.TopoSort = saved }()
+
+	cueexperiment.Flags.TopoSort = true
+
+	test := cuetxtar.TxTarTest{
+		Root:   "testdata",
+		Name:   "toposort",
+		Matrix: cuetdtest.SmallMatrix,
+	}
+
+	test.Run(t, func(t *cuetxtar.Test) {
+		run := t.Runtime()
+		inst := t.Instance()
+
+		v, err := run.Build(nil, inst)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		v.Finalize(eval.NewContext(run, v))
+
+		evalWithOptions := export.Profile{
+			TakeDefaults:    true,
+			ShowOptional:    true,
+			ShowDefinitions: true,
+			ShowAttributes:  true,
+		}
+
+		expr, err := evalWithOptions.Value(run, inst.ID(), v)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		{
+			b, err := format.Node(expr)
+			if err != nil {
+				t.Fatal(err)
+			}
+			_, _ = t.Write(b)
+			fmt.Fprintln(t)
+		}
+	})
+}