goassert/assert_map.go at master · golanglibs/goassert · GitHub

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package goassert

import "testing"

/*
Asserts that the given map is empty. The assertion will fail if the given map is nil
*/
func EmptyMap[K comparable, V any](t testing.TB, m map[K]V) {
	t.Helper()

	if m == nil {
		t.Error("Expected empty map but got nil")
		return
	}

	length := len(m)
	if length != 0 {
		t.Errorf("Expected empty map but got map with length of %d", length)
	}
}

/*
Asserts that the given map is not nil or empty
*/
func NotEmptyMap[K comparable, V any](t testing.TB, m map[K]V) {
	t.Helper()

	if m == nil {
		t.Error("Expected non-empty map but got nil")
		return
	}

	if len(m) == 0 {
		t.Error("Expected non-empty map but got empty map")
	}
}

/*
Asserts that the given map has length equal to the specified length
*/
func MapLength[K comparable, V any](t testing.TB, m map[K]V, expectedLength int) {
	t.Helper()

	length := len(m)
	if length != expectedLength {
		t.Errorf("Expected map to have length of %d but got %d", expectedLength, length)
	}
}

/*
Asserts that the given map contains the given key. The key must be [comparable]
*/
func MapContainsKey[K comparable, V any](t testing.TB, m map[K]V, k K) {
	t.Helper()

	_, found := m[k]
	if !found {
		t.Errorf("The given map was expected to contain key %v but did not", k)
	}
}

/*
Asserts that the given map does not contain the given key. The key must be [comparable]
*/
func MapNotContainsKey[K comparable, V any](t testing.TB, m map[K]V, k K) {
	t.Helper()

	_, found := m[k]
	if found {
		t.Errorf("The given map was expected to not contain key %v but did", k)
	}
}

/*
Asserts that the given map contains the given key-value pair. The key and value must be [comparable]
*/
func MapContains[K, V comparable](t testing.TB, m map[K]V, k K, v V) {
	t.Helper()

	actualValue, found := m[k]

	if !found {
		t.Errorf("Key %v was not found in the map", k)
		return
	}

	if v != actualValue {
		t.Errorf("Expected %v for key %v in the map but got %v", v, k, actualValue)
	}
}

/*
Asserts that the given map does not contain the given key-value pair. The key and value must be [comparable]
*/
func MapNotContains[K, V comparable](t testing.TB, m map[K]V, k K, v V) {
	t.Helper()

	value, found := m[k]

	if found && v == value {
		t.Errorf("Key %v and value %v was not expected to be found in the map", k, v)
	}
}