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assert_equality.go
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assert_equality.go
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package goassert
import (
"reflect"
"testing"
)
/*
Asserts that the two given values are equal. The given values must be [comparable]
*/
func Equal[K comparable](t testing.TB, expected K, actual K) {
t.Helper()
if actual != expected {
t.Error(inequalityMsg(expected, actual))
}
}
/*
Asserts that the two given values are not equal. The given values must be [comparable]
*/
func NotEqual[K comparable](t testing.TB, expected K, actual K) {
t.Helper()
if actual == expected {
t.Error(equalityMsg(expected))
}
}
/*
Asserts that the two given valus are deeply equal. Internally uses reflect.DeepEqual.
The equality of arrays, slices and maps can be asserted with this method
*/
func DeepEqual[T any](t testing.TB, expected T, actual T) {
t.Helper()
if !reflect.DeepEqual(expected, actual) {
t.Error(inequalityMsg(expected, actual))
}
}
/*
Asserts that the two given valus are not deeply equal. Internally uses reflect.DeepEqual.
The inequality of arrays, slices and maps can be asserted with this method
*/
func NotDeepEqual[T any](t testing.TB, expected T, actual T) {
t.Helper()
if reflect.DeepEqual(expected, actual) {
t.Error(equalityMsg(expected))
}
}
/*
Asserts that the given value is nil
*/
func Nil(t testing.TB, actual interface{}) {
t.Helper()
if !isNil(actual) {
t.Error(inequalityMsg(nil, actual))
}
}
/*
Asserts that the given value is not nil
*/
func NotNil(t testing.TB, actual interface{}) {
t.Helper()
if isNil(actual) {
t.Error(equalityMsg("nil"))
}
}
func isNil(value interface{}) bool {
if value == nil {
return true
}
switch reflect.TypeOf(value).Kind() {
case reflect.Pointer, reflect.Map, reflect.Slice, reflect.Chan, reflect.Func:
return reflect.ValueOf(value).IsNil()
}
return false
}
/*
Asserts that the two given slices have the same values in any order. The elements must be [comparable]
*/
func SimilarSlice[T any](t testing.TB, expected []T, actual []T) {
t.Helper()
if !areSimilarSlices(expected, actual) {
t.Error(inequalityMsg(expected, actual))
}
}
/*
Asserts that the two given slices does not have the same values. The elements must be [comparable]
*/
func NotSimilarSlice[T any](t testing.TB, expected []T, actual []T) {
t.Helper()
if areSimilarSlices(expected, actual) {
t.Error(equalityMsg(expected))
}
}
func areSimilarSlices[T any](expected []T, actual []T) bool {
expectedLength := len(expected)
actualLength := len(actual)
if actualLength != expectedLength {
return false
}
matchedIndexMap := make(map[int]interface{}, expectedLength)
for _, expectedValue := range expected {
for j, actualValue := range actual {
if !reflect.DeepEqual(expectedValue, actualValue) {
continue
}
if _, alreadyMatched := matchedIndexMap[j]; !alreadyMatched {
matchedIndexMap[j] = nil
break
}
}
}
return len(matchedIndexMap) == expectedLength
}