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path: root/java/system_modules_test.go
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// Copyright 2021 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 java

import (
	"fmt"
	"testing"

	"android/soong/android"
)

func getModuleHeaderJarsAsRelativeToTopPaths(result *android.TestResult, moduleNames ...string) []string {
	paths := []string{}
	for _, moduleName := range moduleNames {
		module := result.Module(moduleName, "android_common")
		info, _ := android.SingletonModuleProvider(result, module, JavaInfoProvider)
		paths = append(paths, info.HeaderJars.RelativeToTop().Strings()...)
	}
	return paths
}

var addSourceSystemModules = android.FixtureAddTextFile("source/Android.bp", `
		java_system_modules {
			name: "system-modules",
			libs: ["system-module1", "system-module2"],
		}
		java_library {
			name: "system-module1",
			srcs: ["a.java"],
			sdk_version: "none",
			system_modules: "none",
		}
		java_library {
			name: "system-module2",
			srcs: ["b.java"],
			sdk_version: "none",
			system_modules: "none",
		}
`)

func TestJavaSystemModules(t *testing.T) {
	result := android.GroupFixturePreparers(prepareForJavaTest, addSourceSystemModules).RunTest(t)

	// check the existence of the source module
	sourceSystemModules := result.ModuleForTests("system-modules", "android_common")
	sourceInputs := sourceSystemModules.Rule("jarsTosystemModules").Inputs

	// The expected paths are the header jars from the source input modules.
	expectedSourcePaths := getModuleHeaderJarsAsRelativeToTopPaths(result, "system-module1", "system-module2")
	android.AssertArrayString(t, "source system modules inputs", expectedSourcePaths, sourceInputs.RelativeToTop().Strings())
}

var addPrebuiltSystemModules = android.FixtureAddTextFile("prebuilts/Android.bp", `
		java_system_modules_import {
			name: "system-modules",
			libs: ["system-module1", "system-module2"],
		}
		java_import {
			name: "system-module1",
			jars: ["a.jar"],
		}
		java_import {
			name: "system-module2",
			jars: ["b.jar"],
		}
`)

func TestJavaSystemModulesImport(t *testing.T) {
	result := android.GroupFixturePreparers(prepareForJavaTest, addPrebuiltSystemModules).RunTest(t)

	// check the existence of the renamed prebuilt module
	prebuiltSystemModules := result.ModuleForTests("system-modules", "android_common")
	prebuiltInputs := prebuiltSystemModules.Rule("jarsTosystemModules").Inputs

	// The expected paths are the header jars from the renamed prebuilt input modules.
	expectedPrebuiltPaths := getModuleHeaderJarsAsRelativeToTopPaths(result, "system-module1", "system-module2")
	android.AssertArrayString(t, "renamed prebuilt system modules inputs", expectedPrebuiltPaths, prebuiltInputs.RelativeToTop().Strings())
}

func TestJavaSystemModulesMixSourceAndPrebuilt(t *testing.T) {
	result := android.GroupFixturePreparers(
		prepareForJavaTest,
		addSourceSystemModules,
		addPrebuiltSystemModules,
	).RunTest(t)

	// check the existence of the source module
	sourceSystemModules := result.ModuleForTests("system-modules", "android_common")
	sourceInputs := sourceSystemModules.Rule("jarsTosystemModules").Inputs

	// The expected paths are the header jars from the source input modules.
	expectedSourcePaths := getModuleHeaderJarsAsRelativeToTopPaths(result, "system-module1", "system-module2")
	android.AssertArrayString(t, "source system modules inputs", expectedSourcePaths, sourceInputs.RelativeToTop().Strings())

	// check the existence of the renamed prebuilt module
	prebuiltSystemModules := result.ModuleForTests("prebuilt_system-modules", "android_common")
	prebuiltInputs := prebuiltSystemModules.Rule("jarsTosystemModules").Inputs

	// The expected paths are the header jars from the renamed prebuilt input modules.
	expectedPrebuiltPaths := getModuleHeaderJarsAsRelativeToTopPaths(result, "prebuilt_system-module1", "prebuilt_system-module2")
	android.AssertArrayString(t, "prebuilt system modules inputs", expectedPrebuiltPaths, prebuiltInputs.RelativeToTop().Strings())
}

func TestMultipleSystemModulesPrebuilts(t *testing.T) {
	bp := `
		// an rdep
		java_library {
			name: "foo",
			sdk_version: "none",
			system_modules: "my_system_modules",
		}

		// multiple variations of java_system_modules
		// source
		java_system_modules {
			name: "my_system_modules",
			libs: ["bar"],
		}
		java_library {
			name: "bar",
			srcs: ["bar.java"],
		}
		// prebuilt "v1"
		java_system_modules_import {
			name: "my_system_modules.v1",
			source_module_name: "my_system_modules",
			libs: ["bar.v1"],
		}
		java_import {
			name: "bar.v1",
			source_module_name: "bar",
			jars: ["bar.v1.jar"],
		}
		// prebuilt "v2"
		java_system_modules_import {
			name: "my_system_modules.v2",
			source_module_name: "my_system_modules",
			libs: ["bar.v2"],
		}
		java_import {
			name: "bar.v2",
			source_module_name: "bar",
			jars: ["bar.v2.jar"],
		}

		// selectors
		apex_contributions {
			name: "myapex_contributions",
			contents: ["%v"],
		}
	`
	testCases := []struct {
		desc                   string
		selectedDependencyName string
	}{
		{
			desc:                   "Source system_modules is selected using apex_contributions",
			selectedDependencyName: "my_system_modules",
		},
		{
			desc:                   "Prebuilt system_modules v1 is selected using apex_contributions",
			selectedDependencyName: "prebuilt_my_system_modules.v1",
		},
		{
			desc:                   "Prebuilt system_modules v2 is selected using apex_contributions",
			selectedDependencyName: "prebuilt_my_system_modules.v2",
		},
	}

	for _, tc := range testCases {
		res := android.GroupFixturePreparers(
			prepareForJavaTest,
			android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
				variables.BuildFlags = map[string]string{
					"RELEASE_APEX_CONTRIBUTIONS_ADSERVICES": "myapex_contributions",
				}
			}),
		).RunTestWithBp(t, fmt.Sprintf(bp, tc.selectedDependencyName))

		// check that rdep gets the correct variation of system_modules
		hasDep := CheckModuleHasDependency(t, res.TestContext, "foo", "android_common", tc.selectedDependencyName)
		android.AssertBoolEquals(t, fmt.Sprintf("expected dependency from foo to %s\n", tc.selectedDependencyName), true, hasDep)
	}
}