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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package derrors
import (
"errors"
"fmt"
"io"
"net/http"
"testing"
)
func TestFromHTTPStatus(t *testing.T) {
tests := []struct {
label string
status int
want error
}{
{
label: "OK translates to nil error",
status: 200,
},
{
label: "400 translates to invalid argument",
status: 400,
want: InvalidArgument,
},
// Testing other specific HTTP status codes is intentionally omitted to
// avoid writing a change detector.
}
for _, test := range tests {
test := test
t.Run(test.label, func(t *testing.T) {
err := FromHTTPStatus(test.status, "error")
if !errors.Is(err, test.want) {
t.Errorf("FromHTTPStatus(%d, ...) = %v, want %v", test.status, err, test.want)
}
})
}
}
func TestToHTTPStatus(t *testing.T) {
for _, tc := range []struct {
in error
want int
}{
{nil, http.StatusOK},
{InvalidArgument, http.StatusBadRequest},
{NotFound, http.StatusNotFound},
{BadModule, 490},
{AlternativeModule, 491},
{Unknown, http.StatusInternalServerError},
{fmt.Errorf("wrapping: %w", NotFound), http.StatusNotFound},
{io.ErrUnexpectedEOF, http.StatusInternalServerError},
} {
got := ToHTTPStatus(tc.in)
if got != tc.want {
t.Errorf("ToHTTPStatus(%v) = %d, want %d", tc.in, got, tc.want)
}
}
}
func TestAdd(t *testing.T) {
var err error
Add(&err, "whatever")
if err != nil {
t.Errorf("got %v, want nil", err)
}
err = errors.New("bad stuff")
Add(&err, "Frob(%d)", 3)
want := "Frob(3): bad stuff"
if got := err.Error(); got != want {
t.Errorf("got %s, want %s", got, want)
}
if got := errors.Unwrap(err); got != nil {
t.Errorf("Unwrap: got %v, want nil", got)
}
}
func TestWrap(t *testing.T) {
var err error
Wrap(&err, "whatever")
if err != nil {
t.Errorf("got %v, want nil", err)
}
orig := errors.New("bad stuff")
err = orig
Wrap(&err, "Frob(%d)", 3)
want := "Frob(3): bad stuff"
if got := err.Error(); got != want {
t.Errorf("got %s, want %s", got, want)
}
if got := errors.Unwrap(err); got != orig {
t.Errorf("Unwrap: got %#v, want %#v", got, orig)
}
}