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// Copyright 2017 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 errorstest
import (
"bytes"
"fmt"
"os"
"os/exec"
"path/filepath"
"regexp"
"strconv"
"strings"
"testing"
)
func path(file string) string {
return filepath.Join("testdata", file)
}
func check(t *testing.T, file string) {
t.Run(file, func(t *testing.T) {
t.Parallel()
contents, err := os.ReadFile(path(file))
if err != nil {
t.Fatal(err)
}
var errors []*regexp.Regexp
for i, line := range bytes.Split(contents, []byte("\n")) {
if bytes.HasSuffix(line, []byte("ERROR HERE")) {
re := regexp.MustCompile(regexp.QuoteMeta(fmt.Sprintf("%s:%d:", file, i+1)))
errors = append(errors, re)
continue
}
frags := bytes.SplitAfterN(line, []byte("ERROR HERE: "), 2)
if len(frags) == 1 {
continue
}
re, err := regexp.Compile(string(frags[1]))
if err != nil {
t.Errorf("Invalid regexp after `ERROR HERE: `: %#q", frags[1])
continue
}
errors = append(errors, re)
}
if len(errors) == 0 {
t.Fatalf("cannot find ERROR HERE")
}
expect(t, file, errors)
})
}
func expect(t *testing.T, file string, errors []*regexp.Regexp) {
dir, err := os.MkdirTemp("", filepath.Base(t.Name()))
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(dir)
dst := filepath.Join(dir, strings.TrimSuffix(file, ".go"))
cmd := exec.Command("go", "build", "-gcflags=-L -e", "-o="+dst, path(file)) // TODO(gri) no need for -gcflags=-L if go tool is adjusted
out, err := cmd.CombinedOutput()
if err == nil {
t.Errorf("expected cgo to fail but it succeeded")
}
lines := bytes.Split(out, []byte("\n"))
for _, re := range errors {
found := false
for _, line := range lines {
if re.Match(line) {
t.Logf("found match for %#q: %q", re, line)
found = true
break
}
}
if !found {
t.Errorf("expected error output to contain %#q", re)
}
}
if t.Failed() {
t.Logf("actual output:\n%s", out)
}
}
func sizeofLongDouble(t *testing.T) int {
cmd := exec.Command("go", "run", path("long_double_size.go"))
out, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("%#q: %v:\n%s", strings.Join(cmd.Args, " "), err, out)
}
i, err := strconv.Atoi(strings.TrimSpace(string(out)))
if err != nil {
t.Fatalf("long_double_size.go printed invalid size: %s", out)
}
return i
}
func TestReportsTypeErrors(t *testing.T) {
for _, file := range []string{
"err1.go",
"err2.go",
"issue11097a.go",
"issue11097b.go",
"issue18452.go",
"issue18889.go",
"issue28721.go",
"issue33061.go",
} {
check(t, file)
}
if sizeofLongDouble(t) > 8 {
for _, file := range []string{
"err4.go",
"issue28069.go",
} {
check(t, file)
}
}
}
func TestToleratesOptimizationFlag(t *testing.T) {
for _, cflags := range []string{
"",
"-O",
} {
cflags := cflags
t.Run(cflags, func(t *testing.T) {
t.Parallel()
cmd := exec.Command("go", "build", path("issue14669.go"))
cmd.Env = append(os.Environ(), "CGO_CFLAGS="+cflags)
out, err := cmd.CombinedOutput()
if err != nil {
t.Errorf("%#q: %v:\n%s", strings.Join(cmd.Args, " "), err, out)
}
})
}
}
func TestMallocCrashesOnNil(t *testing.T) {
t.Parallel()
cmd := exec.Command("go", "run", path("malloc.go"))
out, err := cmd.CombinedOutput()
if err == nil {
t.Logf("%#q:\n%s", strings.Join(cmd.Args, " "), out)
t.Fatalf("succeeded unexpectedly")
}
}
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