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Support testing Rules in Modules and Rules and Builds in Singletons

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Add support for TestingModule to return RuleParams for rules created
by the module.

Refactor TestingModule to use helpers, and use the helpers to
implement a similar TestingSingleton.

Use the new functionality to test RuleBuilder's module and singleton
rules.

Test: none
Change-Id: I8348c56ff5086d0c49401f5a00faf7c864e6b6f3
This commit is contained in:
Colin Cross
2019-02-25 14:54:28 -08:00
parent 87ecbfe107
commit 4c83e5ccd4
5 changed files with 263 additions and 93 deletions
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240
android/testing.go
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@@ -31,7 +31,7 @@ func NewTestContext() *TestContext {
nameResolver := NewNameResolver(namespaceExportFilter)
ctx := &TestContext{
Context: blueprint.NewContext(),
Context: &Context{blueprint.NewContext()},
NameResolver: nameResolver,
}
@@ -47,7 +47,7 @@ func NewTestArchContext() *TestContext {
}
type TestContext struct {
*blueprint.Context
*Context
preArch, preDeps, postDeps []RegisterMutatorFunc
NameResolver *NameResolver
}
@@ -65,7 +65,7 @@ func (ctx *TestContext) PostDepsMutators(f RegisterMutatorFunc) {
}
func (ctx *TestContext) Register() {
registerMutators(ctx.Context, ctx.preArch, ctx.preDeps, ctx.postDeps)
registerMutators(ctx.Context.Context, ctx.preArch, ctx.preDeps, ctx.postDeps)
ctx.RegisterSingletonType("env", SingletonFactoryAdaptor(EnvSingleton))
}
@@ -102,6 +102,24 @@ func (ctx *TestContext) ModuleVariantsForTests(name string) []string {
return variants
}
// SingletonForTests returns a TestingSingleton for the singleton registered with the given name.
func (ctx *TestContext) SingletonForTests(name string) TestingSingleton {
allSingletonNames := []string{}
for _, s := range ctx.Singletons() {
n := ctx.SingletonName(s)
if n == name {
return TestingSingleton{
singleton: s.(*singletonAdaptor).Singleton,
provider: s.(testBuildProvider),
}
}
allSingletonNames = append(allSingletonNames, n)
}
panic(fmt.Errorf("failed to find singleton %q."+
"\nall singletons: %v", name, allSingletonNames))
}
// MockFileSystem causes the Context to replace all reads with accesses to the provided map of
// filenames to contents stored as a byte slice.
func (ctx *TestContext) MockFileSystem(files map[string][]byte) {
@@ -121,6 +139,95 @@ func (ctx *TestContext) MockFileSystem(files map[string][]byte) {
ctx.Context.MockFileSystem(files)
}
type testBuildProvider interface {
BuildParamsForTests() []BuildParams
RuleParamsForTests() map[blueprint.Rule]blueprint.RuleParams
}
type TestingBuildParams struct {
BuildParams
RuleParams blueprint.RuleParams
}
func newTestingBuildParams(provider testBuildProvider, bparams BuildParams) TestingBuildParams {
return TestingBuildParams{
BuildParams: bparams,
RuleParams: provider.RuleParamsForTests()[bparams.Rule],
}
}
func maybeBuildParamsFromRule(provider testBuildProvider, rule string) TestingBuildParams {
for _, p := range provider.BuildParamsForTests() {
if strings.Contains(p.Rule.String(), rule) {
return newTestingBuildParams(provider, p)
}
}
return TestingBuildParams{}
}
func buildParamsFromRule(provider testBuildProvider, rule string) TestingBuildParams {
p := maybeBuildParamsFromRule(provider, rule)
if p.Rule == nil {
panic(fmt.Errorf("couldn't find rule %q", rule))
}
return p
}
func maybeBuildParamsFromDescription(provider testBuildProvider, desc string) TestingBuildParams {
for _, p := range provider.BuildParamsForTests() {
if p.Description == desc {
return newTestingBuildParams(provider, p)
}
}
return TestingBuildParams{}
}
func buildParamsFromDescription(provider testBuildProvider, desc string) TestingBuildParams {
p := maybeBuildParamsFromDescription(provider, desc)
if p.Rule == nil {
panic(fmt.Errorf("couldn't find description %q", desc))
}
return p
}
func maybeBuildParamsFromOutput(provider testBuildProvider, file string) (TestingBuildParams, []string) {
var searchedOutputs []string
for _, p := range provider.BuildParamsForTests() {
outputs := append(WritablePaths(nil), p.Outputs...)
if p.Output != nil {
outputs = append(outputs, p.Output)
}
for _, f := range outputs {
if f.String() == file || f.Rel() == file {
return newTestingBuildParams(provider, p), nil
}
searchedOutputs = append(searchedOutputs, f.Rel())
}
}
return TestingBuildParams{}, searchedOutputs
}
func buildParamsFromOutput(provider testBuildProvider, file string) TestingBuildParams {
p, searchedOutputs := maybeBuildParamsFromOutput(provider, file)
if p.Rule == nil {
panic(fmt.Errorf("couldn't find output %q.\nall outputs: %v",
file, searchedOutputs))
}
return p
}
func allOutputs(provider testBuildProvider) []string {
var outputFullPaths []string
for _, p := range provider.BuildParamsForTests() {
outputs := append(WritablePaths(nil), p.Outputs...)
if p.Output != nil {
outputs = append(outputs, p.Output)
}
outputFullPaths = append(outputFullPaths, outputs.Strings()...)
}
return outputFullPaths
}
// TestingModule is wrapper around an android.Module that provides methods to find information about individual
// ctx.Build parameters for verification in tests.
type TestingModule struct {
@@ -134,91 +241,96 @@ func (m TestingModule) Module() Module {
// MaybeRule finds a call to ctx.Build with BuildParams.Rule set to a rule with the given name. Returns an empty
// BuildParams if no rule is found.
func (m TestingModule) MaybeRule(rule string) BuildParams {
for _, p := range m.module.BuildParamsForTests() {
if strings.Contains(p.Rule.String(), rule) {
return p
}
}
return BuildParams{}
func (m TestingModule) MaybeRule(rule string) TestingBuildParams {
return maybeBuildParamsFromRule(m.module, rule)
}
// Rule finds a call to ctx.Build with BuildParams.Rule set to a rule with the given name. Panics if no rule is found.
func (m TestingModule) Rule(rule string) BuildParams {
p := m.MaybeRule(rule)
if p.Rule == nil {
panic(fmt.Errorf("couldn't find rule %q", rule))
}
return p
func (m TestingModule) Rule(rule string) TestingBuildParams {
return buildParamsFromRule(m.module, rule)
}
// MaybeDescription finds a call to ctx.Build with BuildParams.Description set to a the given string. Returns an empty
// BuildParams if no rule is found.
func (m TestingModule) MaybeDescription(desc string) BuildParams {
for _, p := range m.module.BuildParamsForTests() {
if p.Description == desc {
return p
}
}
return BuildParams{}
func (m TestingModule) MaybeDescription(desc string) TestingBuildParams {
return maybeBuildParamsFromDescription(m.module, desc)
}
// Description finds a call to ctx.Build with BuildParams.Description set to a the given string. Panics if no rule is
// found.
func (m TestingModule) Description(desc string) BuildParams {
p := m.MaybeDescription(desc)
if p.Rule == nil {
panic(fmt.Errorf("couldn't find description %q", desc))
}
return p
}
func (m TestingModule) maybeOutput(file string) (BuildParams, []string) {
var searchedOutputs []string
for _, p := range m.module.BuildParamsForTests() {
outputs := append(WritablePaths(nil), p.Outputs...)
if p.Output != nil {
outputs = append(outputs, p.Output)
}
for _, f := range outputs {
if f.String() == file || f.Rel() == file {
return p, nil
}
searchedOutputs = append(searchedOutputs, f.Rel())
}
}
return BuildParams{}, searchedOutputs
func (m TestingModule) Description(desc string) TestingBuildParams {
return buildParamsFromDescription(m.module, desc)
}
// MaybeOutput finds a call to ctx.Build with a BuildParams.Output or BuildParams.Outputs whose String() or Rel()
// value matches the provided string. Returns an empty BuildParams if no rule is found.
func (m TestingModule) MaybeOutput(file string) BuildParams {
p, _ := m.maybeOutput(file)
func (m TestingModule) MaybeOutput(file string) TestingBuildParams {
p, _ := maybeBuildParamsFromOutput(m.module, file)
return p
}
// Output finds a call to ctx.Build with a BuildParams.Output or BuildParams.Outputs whose String() or Rel()
// value matches the provided string. Panics if no rule is found.
func (m TestingModule) Output(file string) BuildParams {
p, searchedOutputs := m.maybeOutput(file)
if p.Rule == nil {
panic(fmt.Errorf("couldn't find output %q.\nall outputs: %v",
file, searchedOutputs))
}
return p
func (m TestingModule) Output(file string) TestingBuildParams {
return buildParamsFromOutput(m.module, file)
}
// AllOutputs returns all 'BuildParams.Output's and 'BuildParams.Outputs's in their full path string forms.
func (m TestingModule) AllOutputs() []string {
var outputFullPaths []string
for _, p := range m.module.BuildParamsForTests() {
outputs := append(WritablePaths(nil), p.Outputs...)
if p.Output != nil {
outputs = append(outputs, p.Output)
}
outputFullPaths = append(outputFullPaths, outputs.Strings()...)
}
return outputFullPaths
return allOutputs(m.module)
}
// TestingSingleton is wrapper around an android.Singleton that provides methods to find information about individual
// ctx.Build parameters for verification in tests.
type TestingSingleton struct {
singleton Singleton
provider testBuildProvider
}
// Singleton returns the Singleton wrapped by the TestingSingleton.
func (s TestingSingleton) Singleton() Singleton {
return s.singleton
}
// MaybeRule finds a call to ctx.Build with BuildParams.Rule set to a rule with the given name. Returns an empty
// BuildParams if no rule is found.
func (s TestingSingleton) MaybeRule(rule string) TestingBuildParams {
return maybeBuildParamsFromRule(s.provider, rule)
}
// Rule finds a call to ctx.Build with BuildParams.Rule set to a rule with the given name. Panics if no rule is found.
func (s TestingSingleton) Rule(rule string) TestingBuildParams {
return buildParamsFromRule(s.provider, rule)
}
// MaybeDescription finds a call to ctx.Build with BuildParams.Description set to a the given string. Returns an empty
// BuildParams if no rule is found.
func (s TestingSingleton) MaybeDescription(desc string) TestingBuildParams {
return maybeBuildParamsFromDescription(s.provider, desc)
}
// Description finds a call to ctx.Build with BuildParams.Description set to a the given string. Panics if no rule is
// found.
func (s TestingSingleton) Description(desc string) TestingBuildParams {
return buildParamsFromDescription(s.provider, desc)
}
// MaybeOutput finds a call to ctx.Build with a BuildParams.Output or BuildParams.Outputs whose String() or Rel()
// value matches the provided string. Returns an empty BuildParams if no rule is found.
func (s TestingSingleton) MaybeOutput(file string) TestingBuildParams {
p, _ := maybeBuildParamsFromOutput(s.provider, file)
return p
}
// Output finds a call to ctx.Build with a BuildParams.Output or BuildParams.Outputs whose String() or Rel()
// value matches the provided string. Panics if no rule is found.
func (s TestingSingleton) Output(file string) TestingBuildParams {
return buildParamsFromOutput(s.provider, file)
}
// AllOutputs returns all 'BuildParams.Output's and 'BuildParams.Outputs's in their full path string forms.
func (s TestingSingleton) AllOutputs() []string {
return allOutputs(s.provider)
}
func FailIfErrored(t *testing.T, errs []error) {