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150 lines
3.6 KiB

package testutil
import (
"fmt"
"testing"
"time"
)
// AssertEventually retries an assertion until it passes or times out
func AssertEventually(t *testing.T, assertion func() error, timeout time.Duration, interval time.Duration, msgAndArgs ...interface{}) {
t.Helper()
deadline := time.Now().Add(timeout)
var lastErr error
for time.Now().Before(deadline) {
if err := assertion(); err == nil {
return // Success
} else {
lastErr = err
}
time.Sleep(interval)
}
// Format the failure message
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "assertion failed"
}
t.Fatalf("%s after %v: %v", msg, timeout, lastErr)
}
// AssertNoError fails the test if err is not nil
func AssertNoError(t *testing.T, err error, msgAndArgs ...interface{}) {
t.Helper()
if err != nil {
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "unexpected error"
}
t.Fatalf("%s: %v", msg, err)
}
}
// AssertError fails the test if err is nil
func AssertError(t *testing.T, err error, msgAndArgs ...interface{}) {
t.Helper()
if err == nil {
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "expected error but got nil"
}
t.Fatal(msg)
}
}
// AssertEqual fails the test if expected != actual
func AssertEqual(t *testing.T, expected, actual interface{}, msgAndArgs ...interface{}) {
t.Helper()
if expected != actual {
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "values not equal"
}
t.Fatalf("%s: expected %v, got %v", msg, expected, actual)
}
}
// AssertNotEqual fails the test if expected == actual
func AssertNotEqual(t *testing.T, expected, actual interface{}, msgAndArgs ...interface{}) {
t.Helper()
if expected == actual {
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "values should not be equal"
}
t.Fatalf("%s: both values are %v", msg, expected)
}
}
// AssertGreaterThan fails the test if actual <= expected
func AssertGreaterThan(t *testing.T, expected, actual int, msgAndArgs ...interface{}) {
t.Helper()
if actual <= expected {
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "value not greater than expected"
}
t.Fatalf("%s: expected > %d, got %d", msg, expected, actual)
}
}
// AssertContains fails the test if slice doesn't contain item
func AssertContains(t *testing.T, slice []string, item string, msgAndArgs ...interface{}) {
t.Helper()
for _, s := range slice {
if s == item {
return // Found it
}
}
var msg string
if len(msgAndArgs) > 0 {
if format, ok := msgAndArgs[0].(string); ok {
msg = fmt.Sprintf(format, msgAndArgs[1:]...)
} else {
msg = fmt.Sprint(msgAndArgs...)
}
} else {
msg = "item not found in slice"
}
t.Fatalf("%s: %q not found in %v", msg, item, slice)
}