Update selects_test for selects with deferred expressions

Bug: 323382414
Test: m nothing --no-skip-soong-tests
Change-Id: I18257ff586fb31d4e0b012a249726a925832cdac

android/blueprint_e2e_test.go

@@ -0,0 +1,105 @@
+// Copyright 2024 Google Inc. All rights reserved.
+//
+// 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 android
+
+import (
+	"testing"
+)
+
+var testCases []struct {
+	name          string
+	fs            MockFS
+	expectedError string
+} = []struct {
+	name          string
+	fs            MockFS
+	expectedError string
+}{
+	{
+		name: "Can't reference variable before assignment",
+		fs: map[string][]byte{
+			"Android.bp": []byte(`
+x = foo
+foo = "hello"
+`),
+		},
+		expectedError: "undefined variable foo",
+	},
+	{
+		name: "Can't append to variable before assigned to",
+		fs: map[string][]byte{
+			"Android.bp": []byte(`
+foo += "world"
+foo = "hello"
+`),
+		},
+		expectedError: "modified non-existent variable \"foo\" with \\+=",
+	},
+	{
+		name: "Can't reassign variable",
+		fs: map[string][]byte{
+			"Android.bp": []byte(`
+foo = "hello"
+foo = "world"
+`),
+		},
+		expectedError: "variable already set, previous assignment:",
+	},
+	{
+		name: "Can't reassign variable in inherited scope",
+		fs: map[string][]byte{
+			"Android.bp": []byte(`
+foo = "hello"
+`),
+			"foo/Android.bp": []byte(`
+foo = "world"
+`),
+		},
+		expectedError: "variable already set in inherited scope, previous assignment:",
+	},
+	{
+		name: "Can't modify variable in inherited scope",
+		fs: map[string][]byte{
+			"Android.bp": []byte(`
+foo = "hello"
+`),
+			"foo/Android.bp": []byte(`
+foo += "world"
+`),
+		},
+		expectedError: "modified non-local variable \"foo\" with \\+=",
+	},
+	{
+		name: "Can't modify variable after referencing",
+		fs: map[string][]byte{
+			"Android.bp": []byte(`
+foo = "hello"
+x = foo
+foo += "world"
+`),
+		},
+		expectedError: "modified variable \"foo\" with \\+= after referencing",
+	},
+}
+
+func TestBlueprintErrors(t *testing.T) {
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			fixtures := FixtureMergeMockFs(tc.fs)
+			fixtures = fixtures.ExtendWithErrorHandler(FixtureExpectsOneErrorPattern(tc.expectedError))
+			fixtures.RunTest(t)
+		})
+	}
+}