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Use helpers to get proper file and line number #7

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18 changes: 6 additions & 12 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -8,37 +8,31 @@ No, seriously. They're tiny functions. Just copy them.

```go
import (
"fmt"
"path/filepath"
"runtime"
"reflect"
"testing"
)

// assert fails the test if the condition is false.
func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
tb.Helper()
if !condition {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{filepath.Base(file), line}, v...)...)
tb.FailNow()
tb.Fatalf(msg, v...)
}
}

// ok fails the test if an err is not nil.
func ok(tb testing.TB, err error) {
tb.Helper()
if err != nil {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: unexpected error: %s\033[39m\n\n", filepath.Base(file), line, err.Error())
tb.FailNow()
tb.Fatalf("unexpected error: %s", err.Error())
}
}

// equals fails the test if exp is not equal to act.
func equals(tb testing.TB, exp, act interface{}) {
tb.Helper()
if !reflect.DeepEqual(exp, act) {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d:\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, exp, act)
tb.FailNow()
tb.Fatalf("exp: %#v\n\n\tgot: %#v", exp, act)
}
}
```