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package assertions
import (
"fmt"
"reflect"
)
// ShouldHaveSameTypeAs receives exactly two parameters and compares their underlying types for equality.
func ShouldHaveSameTypeAs(actual interface{}, expected ...interface{}) string {
if fail := need(1, expected); fail != success {
return fail
}
first := reflect.TypeOf(actual)
second := reflect.TypeOf(expected[0])
if equal := ShouldEqual(first, second); equal != success {
return serializer.serialize(second, first, fmt.Sprintf(shouldHaveBeenA, actual, second, first))
}
return success
}
// ShouldNotHaveSameTypeAs receives exactly two parameters and compares their underlying types for inequality.
func ShouldNotHaveSameTypeAs(actual interface{}, expected ...interface{}) string {
if fail := need(1, expected); fail != success {
return fail
}
first := reflect.TypeOf(actual)
second := reflect.TypeOf(expected[0])
if equal := ShouldEqual(first, second); equal == success {
return fmt.Sprintf(shouldNotHaveBeenA, actual, second)
}
return success
}
// ShouldImplement receives exactly two parameters and ensures
// that the first implements the interface type of the second.
func ShouldImplement(actual interface{}, expectedList ...interface{}) string {
if fail := need(1, expectedList); fail != success {
return fail
}
expected := expectedList[0]
if fail := ShouldBeNil(expected); fail != success {
return shouldCompareWithInterfacePointer
}
if fail := ShouldNotBeNil(actual); fail != success {
return shouldNotBeNilActual
}
var actualType reflect.Type
if reflect.TypeOf(actual).Kind() != reflect.Ptr {
actualType = reflect.PtrTo(reflect.TypeOf(actual))
} else {
actualType = reflect.TypeOf(actual)
}
expectedType := reflect.TypeOf(expected)
if fail := ShouldNotBeNil(expectedType); fail != success {
return shouldCompareWithInterfacePointer
}
expectedInterface := expectedType.Elem()
if actualType == nil {
return fmt.Sprintf(shouldHaveImplemented, expectedInterface, actual)
}
if !actualType.Implements(expectedInterface) {
return fmt.Sprintf(shouldHaveImplemented, expectedInterface, actualType)
}
return success
}
// ShouldNotImplement receives exactly two parameters and ensures
// that the first does NOT implement the interface type of the second.
func ShouldNotImplement(actual interface{}, expectedList ...interface{}) string {
if fail := need(1, expectedList); fail != success {
return fail
}
expected := expectedList[0]
if fail := ShouldBeNil(expected); fail != success {
return shouldCompareWithInterfacePointer
}
if fail := ShouldNotBeNil(actual); fail != success {
return shouldNotBeNilActual
}
var actualType reflect.Type
if reflect.TypeOf(actual).Kind() != reflect.Ptr {
actualType = reflect.PtrTo(reflect.TypeOf(actual))
} else {
actualType = reflect.TypeOf(actual)
}
expectedType := reflect.TypeOf(expected)
if fail := ShouldNotBeNil(expectedType); fail != success {
return shouldCompareWithInterfacePointer
}
expectedInterface := expectedType.Elem()
if actualType.Implements(expectedInterface) {
return fmt.Sprintf(shouldNotHaveImplemented, actualType, expectedInterface)
}
return success
}
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