platform_build_soong/sdk/testing.go

371 lines
11 KiB
Go

// 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 sdk
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"testing"
"android/soong/android"
"android/soong/apex"
"android/soong/cc"
"android/soong/java"
)
func testSdkContext(bp string, fs map[string][]byte) (*android.TestContext, android.Config) {
bp = bp + `
apex_key {
name: "myapex.key",
public_key: "myapex.avbpubkey",
private_key: "myapex.pem",
}
android_app_certificate {
name: "myapex.cert",
certificate: "myapex",
}
` + cc.GatherRequiredDepsForTest(android.Android)
mockFS := map[string][]byte{
"build/make/target/product/security": nil,
"apex_manifest.json": nil,
"system/sepolicy/apex/myapex-file_contexts": nil,
"system/sepolicy/apex/myapex2-file_contexts": nil,
"myapex.avbpubkey": nil,
"myapex.pem": nil,
"myapex.x509.pem": nil,
"myapex.pk8": nil,
}
for k, v := range fs {
mockFS[k] = v
}
config := android.TestArchConfig(buildDir, nil, bp, mockFS)
ctx := android.NewTestArchContext()
// from android package
ctx.PreArchMutators(android.RegisterPackageRenamer)
ctx.PreArchMutators(android.RegisterVisibilityRuleChecker)
ctx.PreArchMutators(android.RegisterDefaultsPreArchMutators)
ctx.PreArchMutators(android.RegisterVisibilityRuleGatherer)
ctx.PostDepsMutators(android.RegisterVisibilityRuleEnforcer)
ctx.RegisterModuleType("package", android.PackageFactory)
// from java package
java.RegisterJavaBuildComponents(ctx)
java.RegisterAppBuildComponents(ctx)
java.RegisterStubsBuildComponents(ctx)
// from cc package
cc.RegisterRequiredBuildComponentsForTest(ctx)
// from apex package
ctx.RegisterModuleType("apex", apex.BundleFactory)
ctx.RegisterModuleType("apex_key", apex.ApexKeyFactory)
ctx.PostDepsMutators(apex.RegisterPostDepsMutators)
// from this package
ctx.RegisterModuleType("sdk", SdkModuleFactory)
ctx.RegisterModuleType("sdk_snapshot", SnapshotModuleFactory)
ctx.RegisterModuleType("module_exports", ModuleExportsFactory)
ctx.RegisterModuleType("module_exports_snapshot", ModuleExportsSnapshotsFactory)
ctx.PreDepsMutators(RegisterPreDepsMutators)
ctx.PostDepsMutators(RegisterPostDepsMutators)
ctx.Register(config)
return ctx, config
}
func testSdkWithFs(t *testing.T, bp string, fs map[string][]byte) *testSdkResult {
t.Helper()
ctx, config := testSdkContext(bp, fs)
_, errs := ctx.ParseBlueprintsFiles(".")
android.FailIfErrored(t, errs)
_, errs = ctx.PrepareBuildActions(config)
android.FailIfErrored(t, errs)
return &testSdkResult{
TestHelper: TestHelper{t: t},
ctx: ctx,
config: config,
}
}
func testSdkError(t *testing.T, pattern, bp string) {
t.Helper()
ctx, config := testSdkContext(bp, nil)
_, errs := ctx.ParseFileList(".", []string{"Android.bp"})
if len(errs) > 0 {
android.FailIfNoMatchingErrors(t, pattern, errs)
return
}
_, errs = ctx.PrepareBuildActions(config)
if len(errs) > 0 {
android.FailIfNoMatchingErrors(t, pattern, errs)
return
}
t.Fatalf("missing expected error %q (0 errors are returned)", pattern)
}
func ensureListContains(t *testing.T, result []string, expected string) {
t.Helper()
if !android.InList(expected, result) {
t.Errorf("%q is not found in %v", expected, result)
}
}
func pathsToStrings(paths android.Paths) []string {
var ret []string
for _, p := range paths {
ret = append(ret, p.String())
}
return ret
}
// Provides general test support.
type TestHelper struct {
t *testing.T
}
func (h *TestHelper) AssertStringEquals(message string, expected string, actual string) {
h.t.Helper()
if actual != expected {
h.t.Errorf("%s: expected %s, actual %s", message, expected, actual)
}
}
func (h *TestHelper) AssertTrimmedStringEquals(message string, expected string, actual string) {
h.t.Helper()
h.AssertStringEquals(message, strings.TrimSpace(expected), strings.TrimSpace(actual))
}
// Encapsulates result of processing an SDK definition. Provides support for
// checking the state of the build structures.
type testSdkResult struct {
TestHelper
ctx *android.TestContext
config android.Config
}
// Analyse the sdk build rules to extract information about what it is doing.
// e.g. find the src/dest pairs from each cp command, the various zip files
// generated, etc.
func (r *testSdkResult) getSdkSnapshotBuildInfo(sdk *sdk) *snapshotBuildInfo {
androidBpContents := strings.NewReplacer("\\n", "\n").Replace(sdk.GetAndroidBpContentsForTests())
info := &snapshotBuildInfo{
r: r,
androidBpContents: androidBpContents,
}
buildParams := sdk.BuildParamsForTests()
copyRules := &strings.Builder{}
for _, bp := range buildParams {
switch bp.Rule.String() {
case android.Cp.String():
// Get source relative to build directory.
src := android.NormalizePathForTesting(bp.Input)
// Get destination relative to the snapshot root
dest := bp.Output.Rel()
_, _ = fmt.Fprintf(copyRules, "%s -> %s\n", src, dest)
info.snapshotContents = append(info.snapshotContents, dest)
case repackageZip.String():
// Add the destdir to the snapshot contents as that is effectively where
// the content of the repackaged zip is copied.
dest := bp.Args["destdir"]
info.snapshotContents = append(info.snapshotContents, dest)
case zipFiles.String():
// This could be an intermediate zip file and not the actual output zip.
// In that case this will be overridden when the rule to merge the zips
// is processed.
info.outputZip = android.NormalizePathForTesting(bp.Output)
case mergeZips.String():
// Copy the current outputZip to the intermediateZip.
info.intermediateZip = info.outputZip
mergeInput := android.NormalizePathForTesting(bp.Input)
if info.intermediateZip != mergeInput {
r.t.Errorf("Expected intermediate zip %s to be an input to merge zips but found %s instead",
info.intermediateZip, mergeInput)
}
// Override output zip (which was actually the intermediate zip file) with the actual
// output zip.
info.outputZip = android.NormalizePathForTesting(bp.Output)
// Save the zips to be merged into the intermediate zip.
info.mergeZips = android.NormalizePathsForTesting(bp.Inputs)
}
}
info.copyRules = copyRules.String()
return info
}
func (r *testSdkResult) Module(name string, variant string) android.Module {
return r.ctx.ModuleForTests(name, variant).Module()
}
func (r *testSdkResult) ModuleForTests(name string, variant string) android.TestingModule {
return r.ctx.ModuleForTests(name, variant)
}
// Check the snapshot build rules.
//
// Takes a list of functions which check different facets of the snapshot build rules.
// Allows each test to customize what is checked without duplicating lots of code
// or proliferating check methods of different flavors.
func (r *testSdkResult) CheckSnapshot(name string, variant string, dir string, checkers ...snapshotBuildInfoChecker) {
r.t.Helper()
sdk := r.Module(name, variant).(*sdk)
snapshotBuildInfo := r.getSdkSnapshotBuildInfo(sdk)
// Check state of the snapshot build.
for _, checker := range checkers {
checker(snapshotBuildInfo)
}
// Make sure that the generated zip file is in the correct place.
actual := snapshotBuildInfo.outputZip
if dir != "" {
dir = filepath.Clean(dir) + "/"
}
r.AssertStringEquals("Snapshot zip file in wrong place",
fmt.Sprintf(".intermediates/%s%s/%s/%s-current.zip", dir, name, variant, name), actual)
// Populate a mock filesystem with the files that would have been copied by
// the rules.
fs := make(map[string][]byte)
for _, dest := range snapshotBuildInfo.snapshotContents {
fs[dest] = nil
}
// Process the generated bp file to make sure it is valid.
testSdkWithFs(r.t, snapshotBuildInfo.androidBpContents, fs)
}
type snapshotBuildInfoChecker func(info *snapshotBuildInfo)
// Check that the snapshot's generated Android.bp is correct.
//
// Both the expected and actual string are both trimmed before comparing.
func checkAndroidBpContents(expected string) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
info.r.t.Helper()
info.r.AssertTrimmedStringEquals("Android.bp contents do not match", expected, info.androidBpContents)
}
}
// Check that the snapshot's copy rules are correct.
//
// The copy rules are formatted as <src> -> <dest>, one per line and then compared
// to the supplied expected string. Both the expected and actual string are trimmed
// before comparing.
func checkAllCopyRules(expected string) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
info.r.t.Helper()
info.r.AssertTrimmedStringEquals("Incorrect copy rules", expected, info.copyRules)
}
}
// Check that the specified path is in the list of zips to merge with the intermediate zip.
func checkMergeZip(expected string) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
info.r.t.Helper()
if info.intermediateZip == "" {
info.r.t.Errorf("No intermediate zip file was created")
}
ensureListContains(info.r.t, info.mergeZips, expected)
}
}
// Encapsulates information about the snapshot build structure in order to insulate tests from
// knowing too much about internal structures.
//
// All source/input paths are relative either the build directory. All dest/output paths are
// relative to the snapshot root directory.
type snapshotBuildInfo struct {
r *testSdkResult
// The contents of the generated Android.bp file
androidBpContents string
// The paths, relative to the snapshot root, of all files and directories copied into the
// snapshot.
snapshotContents []string
// A formatted representation of the src/dest pairs, one pair per line, of the format
// src -> dest
copyRules string
// The path to the intermediate zip, which is a zip created from the source files copied
// into the snapshot directory and which will be merged with other zips to form the final output.
// Is am empty string if there is no intermediate zip because there are no zips to merge in.
intermediateZip string
// The paths to the zips to merge into the output zip, does not include the intermediate
// zip.
mergeZips []string
// The final output zip.
outputZip string
}
var buildDir string
func setUp() {
var err error
buildDir, err = ioutil.TempDir("", "soong_sdk_test")
if err != nil {
panic(err)
}
}
func tearDown() {
_ = os.RemoveAll(buildDir)
}
func runTestWithBuildDir(m *testing.M) {
run := func() int {
setUp()
defer tearDown()
return m.Run()
}
os.Exit(run())
}
func SkipIfNotLinux(t *testing.T) {
t.Helper()
if android.BuildOs != android.Linux {
t.Skipf("Skipping as sdk snapshot generation is only supported on %s not %s", android.Linux, android.BuildOs)
}
}