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panic.go
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panic.go
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// Copyright (c) 2015 Arista Networks, Inc.
// Use of this source code is governed by the Apache License 2.0
// that can be found in the COPYING file.
package test
import (
"fmt"
"runtime"
"testing"
)
// ShouldPanic will test is a function is panicking
func ShouldPanic(t *testing.T, fn func()) {
t.Helper()
defer func() {
t.Helper()
if r := recover(); r == nil {
t.Errorf("%sThe function %p should have panicked",
getCallerInfo(), fn)
}
}()
fn()
}
// ShouldPanicWith will test is a function is panicking with a specific message
func ShouldPanicWith(t *testing.T, msg interface{}, fn func()) {
t.Helper()
defer func() {
t.Helper()
if r := recover(); r == nil {
t.Errorf("%sThe function %p should have panicked with %#v",
getCallerInfo(), fn, msg)
} else if d := Diff(msg, r); len(d) != 0 {
t.Errorf("%sThe function %p panicked with the wrong message.\n"+
"Expected: %#v\nReceived: %#v\nDiff:%s",
getCallerInfo(), fn, msg, r, d)
}
}()
fn()
}
func getCallerInfo() string {
_, file, line, ok := runtime.Caller(4)
if !ok {
return ""
}
return fmt.Sprintf("%s:%d\n", file, line)
}