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// 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"
"path/filepath"
"strings"
"testing"
"android/soong/android"
"android/soong/apex"
"android/soong/cc"
"android/soong/genrule"
"android/soong/java"
"github.com/google/blueprint/proptools"
)
// Prepare for running an sdk test with an apex.
var prepareForSdkTestWithApex = android.GroupFixturePreparers(
apex.PrepareForTestWithApexBuildComponents,
android.FixtureAddTextFile("sdk/tests/Android.bp", `
apex_key {
name: "myapex.key",
public_key: "myapex.avbpubkey",
private_key: "myapex.pem",
}
android_app_certificate {
name: "myapex.cert",
certificate: "myapex",
}
`),
android.FixtureMergeMockFs(map[string][]byte{
"apex_manifest.json": nil,
"system/sepolicy/apex/myapex-file_contexts": nil,
"system/sepolicy/apex/myapex2-file_contexts": nil,
"system/sepolicy/apex/mysdkapex-file_contexts": nil,
"sdk/tests/myapex.avbpubkey": nil,
"sdk/tests/myapex.pem": nil,
"sdk/tests/myapex.x509.pem": nil,
"sdk/tests/myapex.pk8": nil,
}),
)
// Legacy preparer used for running tests within the sdk package.
//
// This includes everything that was needed to run any test in the sdk package prior to the
// introduction of the test fixtures. Tests that are being converted to use fixtures directly
// rather than through the testSdkError() and testSdkWithFs() methods should avoid using this and
// instead should use the various preparers directly using android.GroupFixturePreparers(...) to
// group them when necessary.
//
// deprecated
var prepareForSdkTest = android.GroupFixturePreparers(
cc.PrepareForTestWithCcDefaultModules,
genrule.PrepareForTestWithGenRuleBuildComponents,
java.PrepareForTestWithJavaBuildComponents,
PrepareForTestWithSdkBuildComponents,
prepareForSdkTestWithApex,
cc.PrepareForTestOnWindows,
android.FixtureModifyConfig(func(config android.Config) {
// Add windows as a default disable OS to test behavior when some OS variants
// are disabled.
config.Targets[android.Windows] = []android.Target{
{android.Windows, android.Arch{ArchType: android.X86_64}, android.NativeBridgeDisabled, "", "", true},
}
}),
// Add a build number file.
android.FixtureModifyProductVariables(func(variables android.FixtureProductVariables) {
variables.BuildNumberFile = proptools.StringPtr(BUILD_NUMBER_FILE)
}),
// Make sure that every test provides all the source files.
android.PrepareForTestDisallowNonExistentPaths,
android.MockFS{
"Test.java": nil,
}.AddToFixture(),
)
var PrepareForTestWithSdkBuildComponents = android.GroupFixturePreparers(
android.FixtureRegisterWithContext(registerModuleExportsBuildComponents),
android.FixtureRegisterWithContext(registerSdkBuildComponents),
)
func testSdkWithFs(t *testing.T, bp string, fs android.MockFS) *android.TestResult {
t.Helper()
return android.GroupFixturePreparers(
prepareForSdkTest,
fs.AddToFixture(),
).RunTestWithBp(t, bp)
}
func testSdkError(t *testing.T, pattern, bp string) {
t.Helper()
prepareForSdkTest.
ExtendWithErrorHandler(android.FixtureExpectsAtLeastOneErrorMatchingPattern(pattern)).
RunTestWithBp(t, bp)
}
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)
}
}
// 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 getSdkSnapshotBuildInfo(t *testing.T, result *android.TestResult, sdk *sdk) *snapshotBuildInfo {
info := &snapshotBuildInfo{
t: t,
r: result,
androidBpContents: sdk.GetAndroidBpContentsForTests(),
infoContents: sdk.GetInfoContentsForTests(),
snapshotTestCustomizations: map[snapshotTest]*snapshotTestCustomization{},
targetBuildRelease: sdk.builderForTests.targetBuildRelease,
}
buildParams := sdk.BuildParamsForTests()
copyRules := &strings.Builder{}
otherCopyRules := &strings.Builder{}
snapshotDirPrefix := sdk.builderForTests.snapshotDir.String() + "/"
seenBuildNumberFile := false
for _, bp := range buildParams {
switch bp.Rule.String() {
case android.Cp.String():
output := bp.Output
// Get destination relative to the snapshot root
dest := output.Rel()
src := android.NormalizePathForTesting(bp.Input)
// We differentiate between copy rules for the snapshot, and copy rules for the install file.
if strings.HasPrefix(output.String(), snapshotDirPrefix) {
// Don't include the build-number.txt file in the copy rules as that would break lots of
// tests, just verify that it is copied here as it should appear in every snapshot.
if output.Base() == BUILD_NUMBER_FILE {
seenBuildNumberFile = true
} else {
// Get source relative to build directory.
_, _ = fmt.Fprintf(copyRules, "%s -> %s\n", src, dest)
}
info.snapshotContents = append(info.snapshotContents, dest)
} else {
_, _ = fmt.Fprintf(otherCopyRules, "%s -> %s\n", src, 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 {
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)
}
}
if !seenBuildNumberFile {
panic(fmt.Sprintf("Every snapshot must include the %s file", BUILD_NUMBER_FILE))
}
info.copyRules = copyRules.String()
info.otherCopyRules = otherCopyRules.String()
return info
}
// The enum of different sdk snapshot tests performed by CheckSnapshot.
type snapshotTest int
const (
// The enumeration of the different test configurations.
// A test with the snapshot/Android.bp file but without the original Android.bp file.
checkSnapshotWithoutSource snapshotTest = iota
// A test with both the original source and the snapshot, with the source preferred.
checkSnapshotWithSourcePreferred
// A test with both the original source and the snapshot, with the snapshot preferred.
checkSnapshotPreferredWithSource
// The directory into which the snapshot will be 'unpacked'.
snapshotSubDir = "snapshot"
)
// 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 CheckSnapshot(t *testing.T, result *android.TestResult, name string, dir string, checkers ...snapshotBuildInfoChecker) {
t.Helper()
// The sdk CommonOS variant is always responsible for generating the snapshot.
variant := android.CommonOS.Name
sdk := result.Module(name, variant).(*sdk)
snapshotBuildInfo := getSdkSnapshotBuildInfo(t, result, 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) + "/"
}
suffix := "-" + soongSdkSnapshotVersionCurrent
expectedZipPath := fmt.Sprintf(".intermediates/%s%s/%s/%s%s.zip", dir, name, variant, name, suffix)
android.AssertStringEquals(t, "Snapshot zip file in wrong place", expectedZipPath, actual)
// Populate a mock filesystem with the files that would have been copied by
// the rules.
fs := android.MockFS{}
for _, dest := range snapshotBuildInfo.snapshotContents {
fs[filepath.Join(snapshotSubDir, dest)] = nil
}
fs[filepath.Join(snapshotSubDir, "Android.bp")] = []byte(snapshotBuildInfo.androidBpContents)
// If the generated snapshot builders not for the current release then it cannot be loaded by
// the current release.
currentBuildRelease := latestBuildRelease()
if snapshotBuildInfo.targetBuildRelease != currentBuildRelease {
return
}
// The preparers from the original source fixture.
sourcePreparers := result.Preparer()
// Preparer to combine the snapshot and the source.
snapshotPreparer := android.GroupFixturePreparers(sourcePreparers, fs.AddToFixture())
var runSnapshotTestWithCheckers = func(t *testing.T, testConfig snapshotTest, extraPreparer android.FixturePreparer) {
t.Helper()
customization := snapshotBuildInfo.snapshotTestCustomization(testConfig)
customizedPreparers := android.GroupFixturePreparers(customization.preparers...)
// TODO(b/183184375): Set Config.TestAllowNonExistentPaths = false to verify that all the
// files the snapshot needs are actually copied into the snapshot.
// Run the snapshot with the snapshot preparer and the extra preparer, which must come after as
// it may need to modify parts of the MockFS populated by the snapshot preparer.
result := android.GroupFixturePreparers(snapshotPreparer, extraPreparer, customizedPreparers).
ExtendWithErrorHandler(customization.errorHandler).
RunTest(t)
// Perform any additional checks the test need on the result of processing the snapshot.
for _, checker := range customization.checkers {
checker(t, result)
}
}
t.Run("snapshot without source", func(t *testing.T) {
// Remove the source Android.bp file to make sure it works without.
removeSourceAndroidBp := android.FixtureModifyMockFS(func(fs android.MockFS) {
delete(fs, "Android.bp")
})
runSnapshotTestWithCheckers(t, checkSnapshotWithoutSource, removeSourceAndroidBp)
})
t.Run("snapshot with source preferred", func(t *testing.T) {
runSnapshotTestWithCheckers(t, checkSnapshotWithSourcePreferred, android.NullFixturePreparer)
})
t.Run("snapshot preferred with source", func(t *testing.T) {
// Replace the snapshot/Android.bp file with one where "prefer: false," has been replaced with
// "prefer: true,"
preferPrebuilts := android.FixtureModifyMockFS(func(fs android.MockFS) {
snapshotBpFile := filepath.Join(snapshotSubDir, "Android.bp")
unpreferred := string(fs[snapshotBpFile])
fs[snapshotBpFile] = []byte(strings.ReplaceAll(unpreferred, "prefer: false,", "prefer: true,"))
})
runSnapshotTestWithCheckers(t, checkSnapshotPreferredWithSource, preferPrebuilts)
})
}
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.t.Helper()
android.AssertTrimmedStringEquals(info.t, "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.t.Helper()
android.AssertTrimmedStringEquals(info.t, "Incorrect copy rules", expected, info.copyRules)
}
}
func checkAllOtherCopyRules(expected string) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
info.t.Helper()
android.AssertTrimmedStringEquals(info.t, "Incorrect copy rules", expected, info.otherCopyRules)
}
}
// Check that the specified paths match the list of zips to merge with the intermediate zip.
func checkMergeZips(expected ...string) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
info.t.Helper()
if info.intermediateZip == "" {
info.t.Errorf("No intermediate zip file was created")
}
android.AssertDeepEquals(info.t, "mismatching merge zip files", expected, info.mergeZips)
}
}
// Check that the snapshot's info contents are ciorrect.
//
// Both the expected and actual string are both trimmed before comparing.
func checkInfoContents(config android.Config, expected string) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
info.t.Helper()
android.AssertTrimmedStringEquals(info.t, "info contents do not match",
expected, android.StringRelativeToTop(config, info.infoContents))
}
}
type resultChecker func(t *testing.T, result *android.TestResult)
// snapshotTestPreparer registers a preparer that will be used to customize the specified
// snapshotTest.
func snapshotTestPreparer(snapshotTest snapshotTest, preparer android.FixturePreparer) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
customization := info.snapshotTestCustomization(snapshotTest)
customization.preparers = append(customization.preparers, preparer)
}
}
// snapshotTestChecker registers a checker that will be run against the result of processing the
// generated snapshot for the specified snapshotTest.
func snapshotTestChecker(snapshotTest snapshotTest, checker resultChecker) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
customization := info.snapshotTestCustomization(snapshotTest)
customization.checkers = append(customization.checkers, checker)
}
}
// snapshotTestErrorHandler registers an error handler to use when processing the snapshot
// in the specific test case.
//
// Generally, the snapshot should work with all the test cases but some do not and just in case
// there are a lot of issues to resolve, or it will take a lot of time this is a
// get-out-of-jail-free card that allows progress to be made.
//
// deprecated: should only be used as a temporary workaround with an attached to do and bug.
func snapshotTestErrorHandler(snapshotTest snapshotTest, handler android.FixtureErrorHandler) snapshotBuildInfoChecker {
return func(info *snapshotBuildInfo) {
customization := info.snapshotTestCustomization(snapshotTest)
customization.errorHandler = handler
}
}
// Encapsulates information provided by each test to customize a specific snapshotTest.
type snapshotTestCustomization struct {
// Preparers that are used to customize the test fixture before running the test.
preparers []android.FixturePreparer
// Checkers that are run on the result of processing the preferred snapshot in a specific test
// case.
checkers []resultChecker
// Specify an error handler for when processing a specific test case.
//
// In some cases the generated snapshot cannot be used in a test configuration. Those cases are
// invariably bugs that need to be resolved but sometimes that can take a while. This provides a
// mechanism to temporarily ignore that error.
errorHandler android.FixtureErrorHandler
}
// 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 {
t *testing.T
// The result from RunTest()
r *android.TestResult
// The contents of the generated Android.bp file
androidBpContents string
// The contents of the info file.
infoContents 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 for a snapshot, one pair per line,
// of the format src -> dest
copyRules string
// A formatted representation of the src/dest pairs for files not in a snapshot, one pair
// per line, of the format src -> dest
otherCopyRules 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
// The target build release.
targetBuildRelease *buildRelease
// The test specific customizations for each snapshot test.
snapshotTestCustomizations map[snapshotTest]*snapshotTestCustomization
}
// snapshotTestCustomization gets the test specific customization for the specified snapshotTest.
//
// If no customization was created previously then it creates a default customization.
func (i *snapshotBuildInfo) snapshotTestCustomization(snapshotTest snapshotTest) *snapshotTestCustomization {
customization := i.snapshotTestCustomizations[snapshotTest]
if customization == nil {
customization = &snapshotTestCustomization{
errorHandler: android.FixtureExpectsNoErrors,
}
i.snapshotTestCustomizations[snapshotTest] = customization
}
return customization
}