android/soong_config_modules_test.go - android_build_soong - Gitiles

 // Copyright 2019 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 (
 	"fmt"
 	"path/filepath"
 	"testing"
 )

 type soongConfigTestDefaultsModule struct {
 	ModuleBase
 	DefaultsModuleBase
 }

 func soongConfigTestDefaultsModuleFactory() Module {
 	m := &soongConfigTestDefaultsModule{}
 	m.AddProperties(&soongConfigTestModuleProperties{})
 	InitDefaultsModule(m)
 	return m
 }

 type soongConfigTestModule struct {
 	ModuleBase
 	DefaultableModuleBase
 	props      soongConfigTestModuleProperties
 	outputPath ModuleOutPath
 }

 type soongConfigTestModuleProperties struct {
 	Cflags []string
 }

 func soongConfigTestModuleFactory() Module {
 	m := &soongConfigTestModule{}
 	m.AddProperties(&m.props)
 	InitAndroidModule(m)
 	InitDefaultableModule(m)
 	return m
 }

 func (t *soongConfigTestModule) GenerateAndroidBuildActions(ctx ModuleContext) {
 	t.outputPath = PathForModuleOut(ctx, "test")
 }

 var prepareForSoongConfigTestModule = FixtureRegisterWithContext(func(ctx RegistrationContext) {
 	ctx.RegisterModuleType("test_defaults", soongConfigTestDefaultsModuleFactory)
 	ctx.RegisterModuleType("test", soongConfigTestModuleFactory)
 })

 func TestSoongConfigModule(t *testing.T) {
 	configBp := `
 		soong_config_module_type {
 			name: "acme_test",
 			module_type: "test",
 			config_namespace: "acme",
 			variables: ["board", "feature1", "FEATURE3", "unused_string_var"],
 			bool_variables: ["feature2", "unused_feature", "always_true"],
 			value_variables: ["size", "unused_size"],
 			properties: ["cflags", "srcs", "defaults"],
 		}

 		soong_config_string_variable {
 			name: "board",
 			values: ["soc_a", "soc_b", "soc_c", "soc_d"],
 		}

 		soong_config_string_variable {
 			name: "unused_string_var",
 			values: ["a", "b"],
 		}

 		soong_config_bool_variable {
 			name: "feature1",
 		}

 		soong_config_bool_variable {
 			name: "FEATURE3",
 		}
 	`

 	importBp := `
 		soong_config_module_type_import {
 			from: "SoongConfig.bp",
 			module_types: ["acme_test"],
 		}
 	`

 	bp := `
 		test_defaults {
 			name: "foo_defaults",
 			cflags: ["DEFAULT"],
 		}

 		acme_test {
 			name: "foo",
 			cflags: ["-DGENERIC"],
 			defaults: ["foo_defaults"],
 			soong_config_variables: {
 				board: {
 					soc_a: {
 						cflags: ["-DSOC_A"],
 					},
 					soc_b: {
 						cflags: ["-DSOC_B"],
 					},
 					soc_c: {},
 					conditions_default: {
 						cflags: ["-DSOC_CONDITIONS_DEFAULT"],
 					},
 				},
 				size: {
 					cflags: ["-DSIZE=%s"],
 					conditions_default: {
 						cflags: ["-DSIZE=CONDITIONS_DEFAULT"],
 					},
 				},
 				feature1: {
 					  conditions_default: {
 						  cflags: ["-DF1_CONDITIONS_DEFAULT"],
 					  },
 					cflags: ["-DFEATURE1"],
 				},
 				feature2: {
 					cflags: ["-DFEATURE2"],
 					 conditions_default: {
 						 cflags: ["-DF2_CONDITIONS_DEFAULT"],
 					 },
 				},
 				FEATURE3: {
 					cflags: ["-DFEATURE3"],
 				},
 			},
 		}

 		test_defaults {
 			name: "foo_defaults_a",
 			cflags: ["DEFAULT_A"],
 		}

 		test_defaults {
 			name: "foo_defaults_b",
 			cflags: ["DEFAULT_B"],
 		}

 		test_defaults {
 			name: "foo_defaults_always_true",
 			cflags: ["DEFAULT_ALWAYS_TRUE"],
 		}

 		acme_test {
 			name: "foo_with_defaults",
 			cflags: ["-DGENERIC"],
 			defaults: ["foo_defaults"],
 			soong_config_variables: {
 				board: {
 					soc_a: {
 						cflags: ["-DSOC_A"],
 						defaults: ["foo_defaults_a"],
 					},
 					soc_b: {
 						cflags: ["-DSOC_B"],
 						defaults: ["foo_defaults_b"],
 					},
 					soc_c: {},
 				},
 				size: {
 					cflags: ["-DSIZE=%s"],
 				},
 				feature1: {
 					cflags: ["-DFEATURE1"],
 				},
 				feature2: {
 					cflags: ["-DFEATURE2"],
 				},
 				FEATURE3: {
 					cflags: ["-DFEATURE3"],
 				},
 				always_true: {
 					defaults: ["foo_defaults_always_true"],
 					conditions_default: {
 						// verify that conditions_default is skipped if the
 						// soong config variable is true by specifying a
 						// non-existent module in conditions_default
 						defaults: ["//nonexistent:defaults"],
 					}
 				},
 			},
 		}
     `

 	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
 		return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
 			variables.VendorVars = vars
 		})
 	}

 	run := func(t *testing.T, bp string, fs MockFS) {
 		testCases := []struct {
 			name                     string
 			preparer                 FixturePreparer
 			fooExpectedFlags         []string
 			fooDefaultsExpectedFlags []string
 		}{
 			{
 				name: "withValues",
 				preparer: fixtureForVendorVars(map[string]map[string]string{
 					"acme": {
 						"board":    "soc_a",
 						"size":     "42",
 						"feature1": "true",
 						"feature2": "false",
 						// FEATURE3 unset
 						"unused_feature":    "true", // unused
 						"unused_size":       "1",    // unused
 						"unused_string_var": "a",    // unused
 						"always_true":       "true",
 					},
 				}),
 				fooExpectedFlags: []string{
 					"DEFAULT",
 					"-DGENERIC",
 					"-DF2_CONDITIONS_DEFAULT",
 					"-DSIZE=42",
 					"-DSOC_A",
 					"-DFEATURE1",
 				},
 				fooDefaultsExpectedFlags: []string{
 					"DEFAULT_A",
 					"DEFAULT_ALWAYS_TRUE",
 					"DEFAULT",
 					"-DGENERIC",
 					"-DSIZE=42",
 					"-DSOC_A",
 					"-DFEATURE1",
 				},
 			},
 			{
 				name: "empty_prop_for_string_var",
 				preparer: fixtureForVendorVars(map[string]map[string]string{
 					"acme": {
 						"board":       "soc_c",
 						"always_true": "true",
 					}}),
 				fooExpectedFlags: []string{
 					"DEFAULT",
 					"-DGENERIC",
 					"-DF2_CONDITIONS_DEFAULT",
 					"-DSIZE=CONDITIONS_DEFAULT",
 					"-DF1_CONDITIONS_DEFAULT",
 				},
 				fooDefaultsExpectedFlags: []string{
 					"DEFAULT_ALWAYS_TRUE",
 					"DEFAULT",
 					"-DGENERIC",
 				},
 			},
 			{
 				name: "unused_string_var",
 				preparer: fixtureForVendorVars(map[string]map[string]string{
 					"acme": {
 						"board":       "soc_d",
 						"always_true": "true",
 					}}),
 				fooExpectedFlags: []string{
 					"DEFAULT",
 					"-DGENERIC",
 					"-DF2_CONDITIONS_DEFAULT",
 					"-DSIZE=CONDITIONS_DEFAULT",
 					"-DSOC_CONDITIONS_DEFAULT", // foo does not contain a prop "soc_d", so we use the default
 					"-DF1_CONDITIONS_DEFAULT",
 				},
 				fooDefaultsExpectedFlags: []string{
 					"DEFAULT_ALWAYS_TRUE",
 					"DEFAULT",
 					"-DGENERIC",
 				},
 			},

 			{
 				name: "conditions_default",
 				preparer: fixtureForVendorVars(map[string]map[string]string{
 					"acme": {
 						"always_true": "true",
 					}}),
 				fooExpectedFlags: []string{
 					"DEFAULT",
 					"-DGENERIC",
 					"-DF2_CONDITIONS_DEFAULT",
 					"-DSIZE=CONDITIONS_DEFAULT",
 					"-DSOC_CONDITIONS_DEFAULT",
 					"-DF1_CONDITIONS_DEFAULT",
 				},
 				fooDefaultsExpectedFlags: []string{
 					"DEFAULT_ALWAYS_TRUE",
 					"DEFAULT",
 					"-DGENERIC",
 				},
 			},
 		}

 		for _, tc := range testCases {
 			t.Run(tc.name, func(t *testing.T) {
 				result := GroupFixturePreparers(
 					tc.preparer,
 					PrepareForTestWithDefaults,
 					PrepareForTestWithSoongConfigModuleBuildComponents,
 					prepareForSoongConfigTestModule,
 					fs.AddToFixture(),
 					FixtureWithRootAndroidBp(bp),
 				).RunTest(t)

 				foo := result.ModuleForTests("foo", "").Module().(*soongConfigTestModule)
 				AssertDeepEquals(t, "foo cflags", tc.fooExpectedFlags, foo.props.Cflags)

 				fooDefaults := result.ModuleForTests("foo_with_defaults", "").Module().(*soongConfigTestModule)
 				AssertDeepEquals(t, "foo_with_defaults cflags", tc.fooDefaultsExpectedFlags, fooDefaults.props.Cflags)
 			})
 		}
 	}

 	t.Run("single file", func(t *testing.T) {
 		run(t, configBp+bp, nil)
 	})

 	t.Run("import", func(t *testing.T) {
 		run(t, importBp+bp, map[string][]byte{
 			"SoongConfig.bp": []byte(configBp),
 		})
 	})
 }

 func TestNonExistentPropertyInSoongConfigModule(t *testing.T) {
 	bp := `
 		soong_config_module_type {
 			name: "acme_test",
 			module_type: "test",
 			config_namespace: "acme",
 			bool_variables: ["feature1"],
 			properties: ["made_up_property"],
 		}

 		acme_test {
 			name: "foo",
 			cflags: ["-DGENERIC"],
 			soong_config_variables: {
 				feature1: {
 					made_up_property: true,
 				},
 			},
 		}
     `

 	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
 		return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
 			variables.VendorVars = vars
 		})
 	}

 	GroupFixturePreparers(
 		fixtureForVendorVars(map[string]map[string]string{"acme": {"feature1": "1"}}),
 		PrepareForTestWithDefaults,
 		PrepareForTestWithSoongConfigModuleBuildComponents,
 		prepareForSoongConfigTestModule,
 		FixtureWithRootAndroidBp(bp),
 	).ExtendWithErrorHandler(FixtureExpectsAllErrorsToMatchAPattern([]string{
 		`unrecognized property "soong_config_variables.feature1.made_up_property`,
 	})).RunTest(t)
 }

 func TestDuplicateStringValueInSoongConfigStringVariable(t *testing.T) {
 	bp := `
 		soong_config_string_variable {
 			name: "board",
 			values: ["soc_a", "soc_b", "soc_c", "soc_a"],
 		}

 		soong_config_module_type {
 			name: "acme_test",
 			module_type: "test",
 			config_namespace: "acme",
 			variables: ["board"],
 			properties: ["cflags", "srcs", "defaults"],
 		}
     `

 	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
 		return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
 			variables.VendorVars = vars
 		})
 	}

 	GroupFixturePreparers(
 		fixtureForVendorVars(map[string]map[string]string{"acme": {"feature1": "1"}}),
 		PrepareForTestWithDefaults,
 		PrepareForTestWithSoongConfigModuleBuildComponents,
 		prepareForSoongConfigTestModule,
 		FixtureWithRootAndroidBp(bp),
 	).ExtendWithErrorHandler(FixtureExpectsAllErrorsToMatchAPattern([]string{
 		// TODO(b/171232169): improve the error message for non-existent properties
 		`Android.bp: soong_config_string_variable: values property error: duplicate value: "soc_a"`,
 	})).RunTest(t)
 }

 type soongConfigTestSingletonModule struct {
 	SingletonModuleBase
 	props soongConfigTestSingletonModuleProperties
 }

 type soongConfigTestSingletonModuleProperties struct {
 	Fragments []struct {
 		Apex   string
 		Module string
 	}
 }

 func soongConfigTestSingletonModuleFactory() SingletonModule {
 	m := &soongConfigTestSingletonModule{}
 	m.AddProperties(&m.props)
 	InitAndroidModule(m)
 	return m
 }

 func (t *soongConfigTestSingletonModule) GenerateAndroidBuildActions(ModuleContext) {}

 func (t *soongConfigTestSingletonModule) GenerateSingletonBuildActions(SingletonContext) {}

 var prepareForSoongConfigTestSingletonModule = FixtureRegisterWithContext(func(ctx RegistrationContext) {
 	ctx.RegisterSingletonModuleType("test_singleton", soongConfigTestSingletonModuleFactory)
 })

 func TestSoongConfigModuleSingletonModule(t *testing.T) {
 	bp := `
 		soong_config_module_type {
 			name: "acme_test_singleton",
 			module_type: "test_singleton",
 			config_namespace: "acme",
 			bool_variables: ["coyote"],
 			properties: ["fragments"],
 		}

 		acme_test_singleton {
 			name: "wiley",
 			fragments: [
 				{
 					apex: "com.android.acme",
 					module: "road-runner",
 				},
 			],
 			soong_config_variables: {
 				coyote: {
 					fragments: [
 						{
 							apex: "com.android.acme",
 							module: "wiley",
 						},
 					],
 				},
 			},
 		}
 	`

 	for _, test := range []struct {
 		coyote            bool
 		expectedFragments string
 	}{
 		{
 			coyote:            false,
 			expectedFragments: "[{Apex:com.android.acme Module:road-runner}]",
 		},
 		{
 			coyote:            true,
 			expectedFragments: "[{Apex:com.android.acme Module:road-runner} {Apex:com.android.acme Module:wiley}]",
 		},
 	} {
 		t.Run(fmt.Sprintf("coyote:%t", test.coyote), func(t *testing.T) {
 			result := GroupFixturePreparers(
 				PrepareForTestWithSoongConfigModuleBuildComponents,
 				prepareForSoongConfigTestSingletonModule,
 				FixtureWithRootAndroidBp(bp),
 				FixtureModifyProductVariables(func(variables FixtureProductVariables) {
 					variables.VendorVars = map[string]map[string]string{
 						"acme": {
 							"coyote": fmt.Sprintf("%t", test.coyote),
 						},
 					}
 				}),
 			).RunTest(t)

 			// Make sure that the singleton was created.
 			result.SingletonForTests("test_singleton")
 			m := result.ModuleForTests("wiley", "").module.(*soongConfigTestSingletonModule)
 			AssertStringEquals(t, "fragments", test.expectedFragments, fmt.Sprintf("%+v", m.props.Fragments))
 		})
 	}
 }

 func TestSoongConfigModuleTrace(t *testing.T) {
 	bp := `
 		soong_config_module_type {
 			name: "acme_test",
 			module_type: "test",
 			config_namespace: "acme",
 			variables: ["board", "feature1", "FEATURE3", "unused_string_var"],
 			bool_variables: ["feature2", "unused_feature", "always_true"],
 			value_variables: ["size", "unused_size"],
 			properties: ["cflags", "srcs", "defaults"],
 		}

 		soong_config_module_type {
 			name: "acme_test_defaults",
 			module_type: "test_defaults",
 			config_namespace: "acme",
 			variables: ["board", "feature1", "FEATURE3", "unused_string_var"],
 			bool_variables: ["feature2", "unused_feature", "always_true"],
 			value_variables: ["size", "unused_size"],
 			properties: ["cflags", "srcs", "defaults"],
 		}

 		soong_config_string_variable {
 			name: "board",
 			values: ["soc_a", "soc_b", "soc_c"],
 		}

 		soong_config_string_variable {
 			name: "unused_string_var",
 			values: ["a", "b"],
 		}

 		soong_config_bool_variable {
 			name: "feature1",
 		}

 		soong_config_bool_variable {
 			name: "FEATURE3",
 		}

 		test_defaults {
 			name: "test_defaults",
 			cflags: ["DEFAULT"],
 		}

 		test {
 			name: "normal",
 			defaults: ["test_defaults"],
 		}

 		acme_test {
 			name: "board_1",
 			defaults: ["test_defaults"],
 			soong_config_variables: {
 				board: {
 					soc_a: {
 						cflags: ["-DSOC_A"],
 					},
 				},
 			},
 		}

 		acme_test {
 			name: "board_2",
 			defaults: ["test_defaults"],
 			soong_config_variables: {
 				board: {
 					soc_a: {
 						cflags: ["-DSOC_A"],
 					},
 				},
 			},
 		}

 		acme_test {
 			name: "size",
 			defaults: ["test_defaults"],
 			soong_config_variables: {
 				size: {
 					cflags: ["-DSIZE=%s"],
 				},
 			},
 		}

 		acme_test {
 			name: "board_and_size",
 			defaults: ["test_defaults"],
 			soong_config_variables: {
 				board: {
 					soc_a: {
 						cflags: ["-DSOC_A"],
 					},
 				},
 				size: {
 					cflags: ["-DSIZE=%s"],
 				},
 			},
 		}

 		acme_test_defaults {
 			name: "board_defaults",
 			soong_config_variables: {
 				board: {
 					soc_a: {
 						cflags: ["-DSOC_A"],
 					},
 				},
 			},
 		}

 		acme_test_defaults {
 			name: "size_defaults",
 			soong_config_variables: {
 				size: {
 					cflags: ["-DSIZE=%s"],
 				},
 			},
 		}

 		test {
 			name: "board_and_size_with_defaults",
 			defaults: ["board_defaults", "size_defaults"],
 		}
     `

 	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
 		return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
 			variables.VendorVars = vars
 		})
 	}

 	preparer := fixtureForVendorVars(map[string]map[string]string{
 		"acme": {
 			"board":    "soc_a",
 			"size":     "42",
 			"feature1": "true",
 			"feature2": "false",
 			// FEATURE3 unset
 			"unused_feature":    "true", // unused
 			"unused_size":       "1",    // unused
 			"unused_string_var": "a",    // unused
 			"always_true":       "true",
 		},
 	})

 	t.Run("soong config trace hash", func(t *testing.T) {
 		result := GroupFixturePreparers(
 			preparer,
 			PrepareForTestWithDefaults,
 			PrepareForTestWithSoongConfigModuleBuildComponents,
 			prepareForSoongConfigTestModule,
 			FixtureRegisterWithContext(func(ctx RegistrationContext) {
 				ctx.FinalDepsMutators(registerSoongConfigTraceMutator)
 			}),
 			FixtureWithRootAndroidBp(bp),
 		).RunTest(t)

 		// Hashes of modules not using soong config should be empty
 		normal := result.ModuleForTests("normal", "").Module().(*soongConfigTestModule)
 		AssertDeepEquals(t, "normal hash", normal.base().commonProperties.SoongConfigTraceHash, "")
 		AssertDeepEquals(t, "normal hash out", normal.outputPath.RelativeToTop().String(), "out/soong/.intermediates/normal/test")

 		board1 := result.ModuleForTests("board_1", "").Module().(*soongConfigTestModule)
 		board2 := result.ModuleForTests("board_2", "").Module().(*soongConfigTestModule)
 		size := result.ModuleForTests("size", "").Module().(*soongConfigTestModule)

 		// Trace mutator sets soong config trace hash correctly
 		board1Hash := board1.base().commonProperties.SoongConfigTrace.hash()
 		board1Output := board1.outputPath.RelativeToTop().String()
 		AssertDeepEquals(t, "board hash calc", board1Hash, board1.base().commonProperties.SoongConfigTraceHash)
 		AssertDeepEquals(t, "board hash path", board1Output, filepath.Join("out/soong/.intermediates/board_1", board1Hash, "test"))

 		sizeHash := size.base().commonProperties.SoongConfigTrace.hash()
 		sizeOutput := size.outputPath.RelativeToTop().String()
 		AssertDeepEquals(t, "size hash calc", sizeHash, size.base().commonProperties.SoongConfigTraceHash)
 		AssertDeepEquals(t, "size hash path", sizeOutput, filepath.Join("out/soong/.intermediates/size", sizeHash, "test"))

 		// Trace should be identical for modules using the same set of variables
 		AssertDeepEquals(t, "board trace", board1.base().commonProperties.SoongConfigTrace, board2.base().commonProperties.SoongConfigTrace)
 		AssertDeepEquals(t, "board hash", board1.base().commonProperties.SoongConfigTraceHash, board2.base().commonProperties.SoongConfigTraceHash)

 		// Trace hash should be different for different sets of soong variables
 		AssertBoolEquals(t, "board hash not equal to size hash", board1.base().commonProperties.SoongConfigTraceHash == size.commonProperties.SoongConfigTraceHash, false)

 		boardSize := result.ModuleForTests("board_and_size", "").Module().(*soongConfigTestModule)
 		boardSizeDefaults := result.ModuleForTests("board_and_size_with_defaults", "").Module()

 		// Trace should propagate
 		AssertDeepEquals(t, "board_size hash calc", boardSize.base().commonProperties.SoongConfigTrace.hash(), boardSize.base().commonProperties.SoongConfigTraceHash)
 		AssertDeepEquals(t, "board_size trace", boardSize.base().commonProperties.SoongConfigTrace, boardSizeDefaults.base().commonProperties.SoongConfigTrace)
 		AssertDeepEquals(t, "board_size hash", boardSize.base().commonProperties.SoongConfigTraceHash, boardSizeDefaults.base().commonProperties.SoongConfigTraceHash)
 	})
 }
	// Copyright 2019 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 (
	"fmt"
	"path/filepath"
	"testing"
	)

	type soongConfigTestDefaultsModule struct {
	ModuleBase
	DefaultsModuleBase
	}

	func soongConfigTestDefaultsModuleFactory() Module {
	m := &soongConfigTestDefaultsModule{}
	m.AddProperties(&soongConfigTestModuleProperties{})
	InitDefaultsModule(m)
	return m
	}

	type soongConfigTestModule struct {
	ModuleBase
	DefaultableModuleBase
	props soongConfigTestModuleProperties
	outputPath ModuleOutPath
	}

	type soongConfigTestModuleProperties struct {
	Cflags []string
	}

	func soongConfigTestModuleFactory() Module {
	m := &soongConfigTestModule{}
	m.AddProperties(&m.props)
	InitAndroidModule(m)
	InitDefaultableModule(m)
	return m
	}

	func (t *soongConfigTestModule) GenerateAndroidBuildActions(ctx ModuleContext) {
	t.outputPath = PathForModuleOut(ctx, "test")
	}

	var prepareForSoongConfigTestModule = FixtureRegisterWithContext(func(ctx RegistrationContext) {
	ctx.RegisterModuleType("test_defaults", soongConfigTestDefaultsModuleFactory)
	ctx.RegisterModuleType("test", soongConfigTestModuleFactory)
	})

	func TestSoongConfigModule(t *testing.T) {
	configBp := `
	soong_config_module_type {
	name: "acme_test",
	module_type: "test",
	config_namespace: "acme",
	variables: ["board", "feature1", "FEATURE3", "unused_string_var"],
	bool_variables: ["feature2", "unused_feature", "always_true"],
	value_variables: ["size", "unused_size"],
	properties: ["cflags", "srcs", "defaults"],
	}

	soong_config_string_variable {
	name: "board",
	values: ["soc_a", "soc_b", "soc_c", "soc_d"],
	}

	soong_config_string_variable {
	name: "unused_string_var",
	values: ["a", "b"],
	}

	soong_config_bool_variable {
	name: "feature1",
	}

	soong_config_bool_variable {
	name: "FEATURE3",
	}
	`

	importBp := `
	soong_config_module_type_import {
	from: "SoongConfig.bp",
	module_types: ["acme_test"],
	}
	`

	bp := `
	test_defaults {
	name: "foo_defaults",
	cflags: ["DEFAULT"],
	}

	acme_test {
	name: "foo",
	cflags: ["-DGENERIC"],
	defaults: ["foo_defaults"],
	soong_config_variables: {
	board: {
	soc_a: {
	cflags: ["-DSOC_A"],
	},
	soc_b: {
	cflags: ["-DSOC_B"],
	},
	soc_c: {},
	conditions_default: {
	cflags: ["-DSOC_CONDITIONS_DEFAULT"],
	},
	},
	size: {
	cflags: ["-DSIZE=%s"],
	conditions_default: {
	cflags: ["-DSIZE=CONDITIONS_DEFAULT"],
	},
	},
	feature1: {
	conditions_default: {
	cflags: ["-DF1_CONDITIONS_DEFAULT"],
	},
	cflags: ["-DFEATURE1"],
	},
	feature2: {
	cflags: ["-DFEATURE2"],
	conditions_default: {
	cflags: ["-DF2_CONDITIONS_DEFAULT"],
	},
	},
	FEATURE3: {
	cflags: ["-DFEATURE3"],
	},
	},
	}

	test_defaults {
	name: "foo_defaults_a",
	cflags: ["DEFAULT_A"],
	}

	test_defaults {
	name: "foo_defaults_b",
	cflags: ["DEFAULT_B"],
	}

	test_defaults {
	name: "foo_defaults_always_true",
	cflags: ["DEFAULT_ALWAYS_TRUE"],
	}

	acme_test {
	name: "foo_with_defaults",
	cflags: ["-DGENERIC"],
	defaults: ["foo_defaults"],
	soong_config_variables: {
	board: {
	soc_a: {
	cflags: ["-DSOC_A"],
	defaults: ["foo_defaults_a"],
	},
	soc_b: {
	cflags: ["-DSOC_B"],
	defaults: ["foo_defaults_b"],
	},
	soc_c: {},
	},
	size: {
	cflags: ["-DSIZE=%s"],
	},
	feature1: {
	cflags: ["-DFEATURE1"],
	},
	feature2: {
	cflags: ["-DFEATURE2"],
	},
	FEATURE3: {
	cflags: ["-DFEATURE3"],
	},
	always_true: {
	defaults: ["foo_defaults_always_true"],
	conditions_default: {
	// verify that conditions_default is skipped if the
	// soong config variable is true by specifying a
	// non-existent module in conditions_default
	defaults: ["//nonexistent:defaults"],
	}
	},
	},
	}
	`

	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
	return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
	variables.VendorVars = vars
	})
	}

	run := func(t *testing.T, bp string, fs MockFS) {
	testCases := []struct {
	name string
	preparer FixturePreparer
	fooExpectedFlags []string
	fooDefaultsExpectedFlags []string
	}{
	{
	name: "withValues",
	preparer: fixtureForVendorVars(map[string]map[string]string{
	"acme": {
	"board": "soc_a",
	"size": "42",
	"feature1": "true",
	"feature2": "false",
	// FEATURE3 unset
	"unused_feature": "true", // unused
	"unused_size": "1", // unused
	"unused_string_var": "a", // unused
	"always_true": "true",
	},
	}),
	fooExpectedFlags: []string{
	"DEFAULT",
	"-DGENERIC",
	"-DF2_CONDITIONS_DEFAULT",
	"-DSIZE=42",
	"-DSOC_A",
	"-DFEATURE1",
	},
	fooDefaultsExpectedFlags: []string{
	"DEFAULT_A",
	"DEFAULT_ALWAYS_TRUE",
	"DEFAULT",
	"-DGENERIC",
	"-DSIZE=42",
	"-DSOC_A",
	"-DFEATURE1",
	},
	},
	{
	name: "empty_prop_for_string_var",
	preparer: fixtureForVendorVars(map[string]map[string]string{
	"acme": {
	"board": "soc_c",
	"always_true": "true",
	}}),
	fooExpectedFlags: []string{
	"DEFAULT",
	"-DGENERIC",
	"-DF2_CONDITIONS_DEFAULT",
	"-DSIZE=CONDITIONS_DEFAULT",
	"-DF1_CONDITIONS_DEFAULT",
	},
	fooDefaultsExpectedFlags: []string{
	"DEFAULT_ALWAYS_TRUE",
	"DEFAULT",
	"-DGENERIC",
	},
	},
	{
	name: "unused_string_var",
	preparer: fixtureForVendorVars(map[string]map[string]string{
	"acme": {
	"board": "soc_d",
	"always_true": "true",
	}}),
	fooExpectedFlags: []string{
	"DEFAULT",
	"-DGENERIC",
	"-DF2_CONDITIONS_DEFAULT",
	"-DSIZE=CONDITIONS_DEFAULT",
	"-DSOC_CONDITIONS_DEFAULT", // foo does not contain a prop "soc_d", so we use the default
	"-DF1_CONDITIONS_DEFAULT",
	},
	fooDefaultsExpectedFlags: []string{
	"DEFAULT_ALWAYS_TRUE",
	"DEFAULT",
	"-DGENERIC",
	},
	},

	{
	name: "conditions_default",
	preparer: fixtureForVendorVars(map[string]map[string]string{
	"acme": {
	"always_true": "true",
	}}),
	fooExpectedFlags: []string{
	"DEFAULT",
	"-DGENERIC",
	"-DF2_CONDITIONS_DEFAULT",
	"-DSIZE=CONDITIONS_DEFAULT",
	"-DSOC_CONDITIONS_DEFAULT",
	"-DF1_CONDITIONS_DEFAULT",
	},
	fooDefaultsExpectedFlags: []string{
	"DEFAULT_ALWAYS_TRUE",
	"DEFAULT",
	"-DGENERIC",
	},
	},
	}

	for _, tc := range testCases {
	t.Run(tc.name, func(t *testing.T) {
	result := GroupFixturePreparers(
	tc.preparer,
	PrepareForTestWithDefaults,
	PrepareForTestWithSoongConfigModuleBuildComponents,
	prepareForSoongConfigTestModule,
	fs.AddToFixture(),
	FixtureWithRootAndroidBp(bp),
	).RunTest(t)

	foo := result.ModuleForTests("foo", "").Module().(*soongConfigTestModule)
	AssertDeepEquals(t, "foo cflags", tc.fooExpectedFlags, foo.props.Cflags)

	fooDefaults := result.ModuleForTests("foo_with_defaults", "").Module().(*soongConfigTestModule)
	AssertDeepEquals(t, "foo_with_defaults cflags", tc.fooDefaultsExpectedFlags, fooDefaults.props.Cflags)
	})
	}
	}

	t.Run("single file", func(t *testing.T) {
	run(t, configBp+bp, nil)
	})

	t.Run("import", func(t *testing.T) {
	run(t, importBp+bp, map[string][]byte{
	"SoongConfig.bp": []byte(configBp),
	})
	})
	}

	func TestNonExistentPropertyInSoongConfigModule(t *testing.T) {
	bp := `
	soong_config_module_type {
	name: "acme_test",
	module_type: "test",
	config_namespace: "acme",
	bool_variables: ["feature1"],
	properties: ["made_up_property"],
	}

	acme_test {
	name: "foo",
	cflags: ["-DGENERIC"],
	soong_config_variables: {
	feature1: {
	made_up_property: true,
	},
	},
	}
	`

	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
	return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
	variables.VendorVars = vars
	})
	}

	GroupFixturePreparers(
	fixtureForVendorVars(map[string]map[string]string{"acme": {"feature1": "1"}}),
	PrepareForTestWithDefaults,
	PrepareForTestWithSoongConfigModuleBuildComponents,
	prepareForSoongConfigTestModule,
	FixtureWithRootAndroidBp(bp),
	).ExtendWithErrorHandler(FixtureExpectsAllErrorsToMatchAPattern([]string{
	`unrecognized property "soong_config_variables.feature1.made_up_property`,
	})).RunTest(t)
	}

	func TestDuplicateStringValueInSoongConfigStringVariable(t *testing.T) {
	bp := `
	soong_config_string_variable {
	name: "board",
	values: ["soc_a", "soc_b", "soc_c", "soc_a"],
	}

	soong_config_module_type {
	name: "acme_test",
	module_type: "test",
	config_namespace: "acme",
	variables: ["board"],
	properties: ["cflags", "srcs", "defaults"],
	}
	`

	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
	return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
	variables.VendorVars = vars
	})
	}

	GroupFixturePreparers(
	fixtureForVendorVars(map[string]map[string]string{"acme": {"feature1": "1"}}),
	PrepareForTestWithDefaults,
	PrepareForTestWithSoongConfigModuleBuildComponents,
	prepareForSoongConfigTestModule,
	FixtureWithRootAndroidBp(bp),
	).ExtendWithErrorHandler(FixtureExpectsAllErrorsToMatchAPattern([]string{
	// TODO(b/171232169): improve the error message for non-existent properties
	`Android.bp: soong_config_string_variable: values property error: duplicate value: "soc_a"`,
	})).RunTest(t)
	}

	type soongConfigTestSingletonModule struct {
	SingletonModuleBase
	props soongConfigTestSingletonModuleProperties
	}

	type soongConfigTestSingletonModuleProperties struct {
	Fragments []struct {
	Apex string
	Module string
	}
	}

	func soongConfigTestSingletonModuleFactory() SingletonModule {
	m := &soongConfigTestSingletonModule{}
	m.AddProperties(&m.props)
	InitAndroidModule(m)
	return m
	}

	func (t *soongConfigTestSingletonModule) GenerateAndroidBuildActions(ModuleContext) {}

	func (t *soongConfigTestSingletonModule) GenerateSingletonBuildActions(SingletonContext) {}

	var prepareForSoongConfigTestSingletonModule = FixtureRegisterWithContext(func(ctx RegistrationContext) {
	ctx.RegisterSingletonModuleType("test_singleton", soongConfigTestSingletonModuleFactory)
	})

	func TestSoongConfigModuleSingletonModule(t *testing.T) {
	bp := `
	soong_config_module_type {
	name: "acme_test_singleton",
	module_type: "test_singleton",
	config_namespace: "acme",
	bool_variables: ["coyote"],
	properties: ["fragments"],
	}

	acme_test_singleton {
	name: "wiley",
	fragments: [
	{
	apex: "com.android.acme",
	module: "road-runner",
	},
	],
	soong_config_variables: {
	coyote: {
	fragments: [
	{
	apex: "com.android.acme",
	module: "wiley",
	},
	],
	},
	},
	}
	`

	for _, test := range []struct {
	coyote bool
	expectedFragments string
	}{
	{
	coyote: false,
	expectedFragments: "[{Apex:com.android.acme Module:road-runner}]",
	},
	{
	coyote: true,
	expectedFragments: "[{Apex:com.android.acme Module:road-runner} {Apex:com.android.acme Module:wiley}]",
	},
	} {
	t.Run(fmt.Sprintf("coyote:%t", test.coyote), func(t *testing.T) {
	result := GroupFixturePreparers(
	PrepareForTestWithSoongConfigModuleBuildComponents,
	prepareForSoongConfigTestSingletonModule,
	FixtureWithRootAndroidBp(bp),
	FixtureModifyProductVariables(func(variables FixtureProductVariables) {
	variables.VendorVars = map[string]map[string]string{
	"acme": {
	"coyote": fmt.Sprintf("%t", test.coyote),
	},
	}
	}),
	).RunTest(t)

	// Make sure that the singleton was created.
	result.SingletonForTests("test_singleton")
	m := result.ModuleForTests("wiley", "").module.(*soongConfigTestSingletonModule)
	AssertStringEquals(t, "fragments", test.expectedFragments, fmt.Sprintf("%+v", m.props.Fragments))
	})
	}
	}

	func TestSoongConfigModuleTrace(t *testing.T) {
	bp := `
	soong_config_module_type {
	name: "acme_test",
	module_type: "test",
	config_namespace: "acme",
	variables: ["board", "feature1", "FEATURE3", "unused_string_var"],
	bool_variables: ["feature2", "unused_feature", "always_true"],
	value_variables: ["size", "unused_size"],
	properties: ["cflags", "srcs", "defaults"],
	}

	soong_config_module_type {
	name: "acme_test_defaults",
	module_type: "test_defaults",
	config_namespace: "acme",
	variables: ["board", "feature1", "FEATURE3", "unused_string_var"],
	bool_variables: ["feature2", "unused_feature", "always_true"],
	value_variables: ["size", "unused_size"],
	properties: ["cflags", "srcs", "defaults"],
	}

	soong_config_string_variable {
	name: "board",
	values: ["soc_a", "soc_b", "soc_c"],
	}

	soong_config_string_variable {
	name: "unused_string_var",
	values: ["a", "b"],
	}

	soong_config_bool_variable {
	name: "feature1",
	}

	soong_config_bool_variable {
	name: "FEATURE3",
	}

	test_defaults {
	name: "test_defaults",
	cflags: ["DEFAULT"],
	}

	test {
	name: "normal",
	defaults: ["test_defaults"],
	}

	acme_test {
	name: "board_1",
	defaults: ["test_defaults"],
	soong_config_variables: {
	board: {
	soc_a: {
	cflags: ["-DSOC_A"],
	},
	},
	},
	}

	acme_test {
	name: "board_2",
	defaults: ["test_defaults"],
	soong_config_variables: {
	board: {
	soc_a: {
	cflags: ["-DSOC_A"],
	},
	},
	},
	}

	acme_test {
	name: "size",
	defaults: ["test_defaults"],
	soong_config_variables: {
	size: {
	cflags: ["-DSIZE=%s"],
	},
	},
	}

	acme_test {
	name: "board_and_size",
	defaults: ["test_defaults"],
	soong_config_variables: {
	board: {
	soc_a: {
	cflags: ["-DSOC_A"],
	},
	},
	size: {
	cflags: ["-DSIZE=%s"],
	},
	},
	}

	acme_test_defaults {
	name: "board_defaults",
	soong_config_variables: {
	board: {
	soc_a: {
	cflags: ["-DSOC_A"],
	},
	},
	},
	}

	acme_test_defaults {
	name: "size_defaults",
	soong_config_variables: {
	size: {
	cflags: ["-DSIZE=%s"],
	},
	},
	}

	test {
	name: "board_and_size_with_defaults",
	defaults: ["board_defaults", "size_defaults"],
	}
	`

	fixtureForVendorVars := func(vars map[string]map[string]string) FixturePreparer {
	return FixtureModifyProductVariables(func(variables FixtureProductVariables) {
	variables.VendorVars = vars
	})
	}

	preparer := fixtureForVendorVars(map[string]map[string]string{
	"acme": {
	"board": "soc_a",
	"size": "42",
	"feature1": "true",
	"feature2": "false",
	// FEATURE3 unset
	"unused_feature": "true", // unused
	"unused_size": "1", // unused
	"unused_string_var": "a", // unused
	"always_true": "true",
	},
	})

	t.Run("soong config trace hash", func(t *testing.T) {
	result := GroupFixturePreparers(
	preparer,
	PrepareForTestWithDefaults,
	PrepareForTestWithSoongConfigModuleBuildComponents,
	prepareForSoongConfigTestModule,
	FixtureRegisterWithContext(func(ctx RegistrationContext) {
	ctx.FinalDepsMutators(registerSoongConfigTraceMutator)
	}),
	FixtureWithRootAndroidBp(bp),
	).RunTest(t)

	// Hashes of modules not using soong config should be empty
	normal := result.ModuleForTests("normal", "").Module().(*soongConfigTestModule)
	AssertDeepEquals(t, "normal hash", normal.base().commonProperties.SoongConfigTraceHash, "")
	AssertDeepEquals(t, "normal hash out", normal.outputPath.RelativeToTop().String(), "out/soong/.intermediates/normal/test")

	board1 := result.ModuleForTests("board_1", "").Module().(*soongConfigTestModule)
	board2 := result.ModuleForTests("board_2", "").Module().(*soongConfigTestModule)
	size := result.ModuleForTests("size", "").Module().(*soongConfigTestModule)

	// Trace mutator sets soong config trace hash correctly
	board1Hash := board1.base().commonProperties.SoongConfigTrace.hash()
	board1Output := board1.outputPath.RelativeToTop().String()
	AssertDeepEquals(t, "board hash calc", board1Hash, board1.base().commonProperties.SoongConfigTraceHash)
	AssertDeepEquals(t, "board hash path", board1Output, filepath.Join("out/soong/.intermediates/board_1", board1Hash, "test"))

	sizeHash := size.base().commonProperties.SoongConfigTrace.hash()
	sizeOutput := size.outputPath.RelativeToTop().String()
	AssertDeepEquals(t, "size hash calc", sizeHash, size.base().commonProperties.SoongConfigTraceHash)
	AssertDeepEquals(t, "size hash path", sizeOutput, filepath.Join("out/soong/.intermediates/size", sizeHash, "test"))

	// Trace should be identical for modules using the same set of variables
	AssertDeepEquals(t, "board trace", board1.base().commonProperties.SoongConfigTrace, board2.base().commonProperties.SoongConfigTrace)
	AssertDeepEquals(t, "board hash", board1.base().commonProperties.SoongConfigTraceHash, board2.base().commonProperties.SoongConfigTraceHash)

	// Trace hash should be different for different sets of soong variables
	AssertBoolEquals(t, "board hash not equal to size hash", board1.base().commonProperties.SoongConfigTraceHash == size.commonProperties.SoongConfigTraceHash, false)

	boardSize := result.ModuleForTests("board_and_size", "").Module().(*soongConfigTestModule)
	boardSizeDefaults := result.ModuleForTests("board_and_size_with_defaults", "").Module()

	// Trace should propagate
	AssertDeepEquals(t, "board_size hash calc", boardSize.base().commonProperties.SoongConfigTrace.hash(), boardSize.base().commonProperties.SoongConfigTraceHash)
	AssertDeepEquals(t, "board_size trace", boardSize.base().commonProperties.SoongConfigTrace, boardSizeDefaults.base().commonProperties.SoongConfigTrace)
	AssertDeepEquals(t, "board_size hash", boardSize.base().commonProperties.SoongConfigTraceHash, boardSizeDefaults.base().commonProperties.SoongConfigTraceHash)
	})
	}