47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
// Package assert contains functions for making assertions in unit tests
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package assert
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import (
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"strings"
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)
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// TestingT is an interface which defines the methods of testing.T that are
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// required by this package
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type TestingT interface {
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Fatalf(string, ...interface{})
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}
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// Equal compare the actual value to the expected value and fails the test if
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// they are not equal.
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func Equal(t TestingT, actual, expected interface{}) {
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if expected != actual {
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t.Fatalf("Expected '%v' (%T) got '%v' (%T)", expected, expected, actual, actual)
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}
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}
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// NilError asserts that the error is nil, otherwise it fails the test.
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func NilError(t TestingT, err error) {
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if err != nil {
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t.Fatalf("Expected no error, got: %s", err.Error())
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}
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}
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// Error asserts that error is not nil, and contains the expected text,
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// otherwise it fails the test.
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func Error(t TestingT, err error, contains string) {
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if err == nil {
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t.Fatalf("Expected an error, but error was nil")
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}
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if !strings.Contains(err.Error(), contains) {
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t.Fatalf("Expected error to contain '%s', got '%s'", contains, err.Error())
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}
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}
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// Contains asserts that the string contains a substring, otherwise it fails the
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// test.
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func Contains(t TestingT, actual, contains string) {
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if !strings.Contains(actual, contains) {
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t.Fatalf("Expected '%s' to contain '%s'", actual, contains)
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}
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}
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