| package matchers |
| |
| import ( |
| "fmt" |
| "reflect" |
| |
| "github.com/onsi/gomega/format" |
| ) |
| |
| type AssignableToTypeOfMatcher struct { |
| Expected interface{} |
| } |
| |
| func (matcher *AssignableToTypeOfMatcher) Match(actual interface{}) (success bool, err error) { |
| if actual == nil && matcher.Expected == nil { |
| return false, fmt.Errorf("Refusing to compare <nil> to <nil>.\nBe explicit and use BeNil() instead. This is to avoid mistakes where both sides of an assertion are erroneously uninitialized.") |
| } else if matcher.Expected == nil { |
| return false, fmt.Errorf("Refusing to compare type to <nil>.\nBe explicit and use BeNil() instead. This is to avoid mistakes where both sides of an assertion are erroneously uninitialized.") |
| } else if actual == nil { |
| return false, nil |
| } |
| |
| actualType := reflect.TypeOf(actual) |
| expectedType := reflect.TypeOf(matcher.Expected) |
| |
| return actualType.AssignableTo(expectedType), nil |
| } |
| |
| func (matcher *AssignableToTypeOfMatcher) FailureMessage(actual interface{}) string { |
| return format.Message(actual, fmt.Sprintf("to be assignable to the type: %T", matcher.Expected)) |
| } |
| |
| func (matcher *AssignableToTypeOfMatcher) NegatedFailureMessage(actual interface{}) string { |
| return format.Message(actual, fmt.Sprintf("not to be assignable to the type: %T", matcher.Expected)) |
| } |