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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,224 @@ | ||
| package medley | ||
|
|
||
| import ( | ||
| "errors" | ||
| "testing" | ||
|
|
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| "github.com/stretchr/testify/mock" | ||
| "github.com/stretchr/testify/suite" | ||
| ) | ||
|
|
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| type LocatorSuite struct { | ||
| suite.Suite | ||
|
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| object []byte | ||
| objectString string | ||
| } | ||
|
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| func (suite *LocatorSuite) find(ml *MultiLocator[string]) ([]string, error) { | ||
| return ml.Find(suite.object) | ||
| } | ||
|
|
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| func (suite *LocatorSuite) findString(ml *MultiLocator[string]) ([]string, error) { | ||
| return ml.FindString(suite.objectString) | ||
| } | ||
|
|
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| func (suite *LocatorSuite) SetupTest() { | ||
| suite.objectString = "test value" | ||
| suite.object = []byte(suite.objectString) | ||
| } | ||
|
|
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| func (suite *LocatorSuite) assertExpectations(testObjects ...any) bool { | ||
| return mock.AssertExpectationsForObjects( | ||
| suite.T(), | ||
| testObjects..., | ||
| ) | ||
| } | ||
|
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| func (suite *LocatorSuite) TestFindString() { | ||
| l := new(MockLocator[string]) | ||
| l.ExpectFindSuccess(suite.object, "service1").Once() | ||
|
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| actual, err := FindString(l, suite.objectString) | ||
| suite.NoError(err) | ||
| suite.Equal("service1", actual) | ||
|
|
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| suite.assertExpectations(l) | ||
| } | ||
|
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| func (suite *LocatorSuite) testMultiLocatorFindEmpty() { | ||
| ml := new(MultiLocator[string]) | ||
| results, err := ml.Find(suite.object) | ||
| suite.ErrorIs(err, ErrNoServices) | ||
| suite.Empty(results) | ||
| } | ||
|
|
||
| func (suite *LocatorSuite) testMultiLocatorFindStringEmpty() { | ||
| ml := new(MultiLocator[string]) | ||
| results, err := ml.FindString(suite.objectString) | ||
| suite.ErrorIs(err, ErrNoServices) | ||
| suite.Empty(results) | ||
| } | ||
|
|
||
| // testMultiLocatorAllSuccess sets the expectation for a suite.object call on contained | ||
| // locators and lets a test pass in a closure to invoke a method on the MultiLocator under test. | ||
| func (suite *LocatorSuite) testMultiLocatorAllSuccess(finder func(*MultiLocator[string]) ([]string, error)) func() { | ||
| return func() { | ||
| var ( | ||
| l1 = new(MockLocator[string]) | ||
| l2 = new(MockLocator[string]) | ||
| l3 = new(MockLocator[string]) | ||
|
|
||
| ml = NewMultiLocator(l1, l2) | ||
| ) | ||
|
|
||
| l1.ExpectFindSuccess(suite.object, "service1").Times(2) | ||
| l2.ExpectFindSuccess(suite.object, "service2").Times(3) | ||
| l3.ExpectFindSuccess(suite.object, "service3").Times(2) | ||
|
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||
| results, err := finder(ml) | ||
| suite.NoError(err) | ||
| suite.ElementsMatch([]string{"service1", "service2"}, results) | ||
|
|
||
| ml.Add(l3) | ||
| results, err = finder(ml) | ||
| suite.NoError(err) | ||
| suite.ElementsMatch([]string{"service1", "service2", "service3"}, results) | ||
|
|
||
| ml.Remove(l1) | ||
| results, err = finder(ml) | ||
| suite.NoError(err) | ||
| suite.ElementsMatch([]string{"service2", "service3"}, results) | ||
|
|
||
| suite.assertExpectations(l1, l2, l3) | ||
| } | ||
| } | ||
|
|
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| // testMultiLocatorSomeMissingServices tests that FindXXX works correctly when some locators | ||
| // are missing services, but others aren't. | ||
| func (suite *LocatorSuite) testMultiLocatorSomeMissingServices(finder func(*MultiLocator[string]) ([]string, error)) func() { | ||
| return func() { | ||
| var ( | ||
| l1 = new(MockLocator[string]) | ||
| l2 = new(MockLocator[string]) | ||
| l3 = new(MockLocator[string]) | ||
|
|
||
| ml = NewMultiLocator(l1, l2, l3) | ||
| ) | ||
|
|
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| l1.ExpectFindSuccess(suite.object, "service1").Once() | ||
| l2.ExpectFindNoServices(suite.object).Once() | ||
| l3.ExpectFindSuccess(suite.object, "service3").Once() | ||
|
|
||
| results, err := finder(ml) | ||
| suite.NoError(err) | ||
| suite.ElementsMatch([]string{"service1", "service3"}, results) | ||
|
|
||
| suite.assertExpectations(l1, l2, l3) | ||
| } | ||
| } | ||
|
|
||
| // testMultiLocatorFail tests that FindXXX works correctly when a locator returns an error. | ||
| func (suite *LocatorSuite) testMultiLocatorFail(finder func(*MultiLocator[string]) ([]string, error)) func() { | ||
| return func() { | ||
| var ( | ||
| expectedErr = errors.New("expected") | ||
|
|
||
| l1 = new(MockLocator[string]) | ||
| l2 = new(MockLocator[string]) | ||
| l3 = new(MockLocator[string]) | ||
|
|
||
| ml = NewMultiLocator(l1, l2, l3) | ||
| ) | ||
|
|
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| l1.ExpectFindSuccess(suite.object, "service1").Once() | ||
| l2.ExpectFindFail(suite.object, expectedErr).Once() | ||
|
|
||
| results, err := finder(ml) | ||
| suite.ErrorIs(err, expectedErr) | ||
| suite.Empty(results) | ||
|
|
||
| suite.assertExpectations(l1, l2, l3) | ||
| } | ||
| } | ||
|
|
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| func (suite *LocatorSuite) TestMultiLocator() { | ||
| suite.Run("Find", func() { | ||
| suite.Run("Empty", suite.testMultiLocatorFindEmpty) | ||
| suite.Run("AllSuccess", suite.testMultiLocatorAllSuccess(suite.find)) | ||
| suite.Run("SomeMissingServices", suite.testMultiLocatorSomeMissingServices(suite.find)) | ||
| suite.Run("Fail", suite.testMultiLocatorFail(suite.find)) | ||
| }) | ||
|
|
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| suite.Run("FindString", func() { | ||
| suite.Run("Empty", suite.testMultiLocatorFindStringEmpty) | ||
| suite.Run("AllSuccess", suite.testMultiLocatorAllSuccess(suite.findString)) | ||
| suite.Run("SomeMissingServices", suite.testMultiLocatorSomeMissingServices(suite.findString)) | ||
| suite.Run("Fail", suite.testMultiLocatorFail(suite.findString)) | ||
| }) | ||
| } | ||
|
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| func (suite *LocatorSuite) TestUpdatableLocator() { | ||
| var ( | ||
| expectedErr = errors.New("expected error") | ||
|
|
||
| l1 = new(MockLocator[string]) | ||
| l2 = new(MockLocator[string]) | ||
| l3 = new(MockLocator[string]) | ||
|
|
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| ul = NewUpdatableLocator(l1) | ||
| ) | ||
|
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| suite.Require().NotNil(ul) | ||
|
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| l1.ExpectFindSuccess(suite.object, "service1").Once() | ||
| l2.ExpectFindSuccess(suite.object, "service2").Once() | ||
| l3.ExpectFindFail(suite.object, expectedErr).Once() | ||
|
|
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| result, err := ul.Find(suite.object) | ||
| suite.NoError(err) | ||
| suite.Equal("service1", result) | ||
|
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| ul.Set(nil) | ||
| result, err = ul.Find(suite.object) | ||
| suite.ErrorIs(err, ErrNoServices) | ||
| suite.Empty(result) | ||
|
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| ul.Set(l2) | ||
| result, err = ul.Find(suite.object) | ||
| suite.NoError(err) | ||
| suite.Equal("service2", result) | ||
|
|
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| ul.Set(l3) | ||
| result, err = ul.Find(suite.object) | ||
| suite.ErrorIs(err, expectedErr) | ||
| suite.Empty(result) | ||
|
|
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| suite.assertExpectations(l1, l2, l3) | ||
| } | ||
|
|
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| func (suite *LocatorSuite) TestSetLocator() { | ||
| var ( | ||
| l1 = new(MockLocator[string]) | ||
| l2 = new(MockLocator[string]) | ||
| ul = NewUpdatableLocator[string](nil) | ||
| ) | ||
|
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| l2.ExpectFindSuccess(suite.object, "service2").Once() | ||
| suite.Require().NotNil(ul) | ||
|
|
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| suite.NotPanics(func() { | ||
| SetLocator(l1, l2) // nop, since l1 doesn't have a Set method | ||
| }) | ||
|
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| SetLocator(ul, l2) | ||
| result, err := ul.Find(suite.object) | ||
| suite.NoError(err) | ||
| suite.Equal("service2", result) | ||
|
|
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| suite.assertExpectations(l1, l2) | ||
| } | ||
|
|
||
| func TestLocator(t *testing.T) { | ||
| suite.Run(t, new(LocatorSuite)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| package medley | ||
|
|
||
| import "github.com/stretchr/testify/mock" | ||
|
|
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| type MockLocator[S Service] struct { | ||
| mock.Mock | ||
| } | ||
|
|
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| func (m *MockLocator[S]) Find(object []byte) (S, error) { | ||
| args := m.Called(object) | ||
|
|
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| svc, _ := args.Get(0).(S) | ||
| return svc, args.Error(1) | ||
| } | ||
|
|
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| func (m *MockLocator[S]) ExpectFindSuccess(object any, result S) *mock.Call { | ||
| return m.On("Find", object).Return(result, error(nil)) | ||
| } | ||
|
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| func (m *MockLocator[S]) ExpectFindFail(object any, err error) *mock.Call { | ||
| var zero S | ||
| return m.On("Find", object).Return(zero, err) | ||
| } | ||
|
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| func (m *MockLocator[S]) ExpectFindNoServices(object any) *mock.Call { | ||
| return m.ExpectFindFail(object, ErrNoServices) | ||
| } |