File size: 1,836 Bytes
da86720 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 | // 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 stdio_test
import (
"bytes"
"cmd/cgo/internal/cgotest"
"internal/testenv"
"log"
"os"
"os/exec"
"path/filepath"
"strings"
"testing"
)
func TestMain(m *testing.M) {
log.SetFlags(log.Lshortfile)
os.Exit(testMain(m))
}
func testMain(m *testing.M) int {
GOPATH, err := os.MkdirTemp("", "cgostdio")
if err != nil {
log.Panic(err)
}
defer os.RemoveAll(GOPATH)
os.Setenv("GOPATH", GOPATH)
// Copy testdata into GOPATH/src/cgostdio, along with a go.mod file
// declaring the same path.
modRoot := filepath.Join(GOPATH, "src", "cgostdio")
if err := cgotest.OverlayDir(modRoot, "testdata"); err != nil {
log.Panic(err)
}
if err := os.Chdir(modRoot); err != nil {
log.Panic(err)
}
os.Setenv("PWD", modRoot)
if err := os.WriteFile("go.mod", []byte("module cgostdio\n"), 0666); err != nil {
log.Panic(err)
}
return m.Run()
}
// TestTestRun runs a cgo test that doesn't depend on non-standard libraries.
func TestTestRun(t *testing.T) {
testenv.MustHaveGoRun(t)
testenv.MustHaveCGO(t)
for _, file := range [...]string{
"chain.go",
"fib.go",
"hello.go",
} {
file := file
wantFile := strings.Replace(file, ".go", ".out", 1)
t.Run(file, func(t *testing.T) {
cmd := exec.Command(testenv.GoToolPath(t), "run", file)
got, err := cmd.CombinedOutput()
if err != nil {
t.Fatalf("%v: %s\n%s", cmd, err, got)
}
got = bytes.ReplaceAll(got, []byte("\r\n"), []byte("\n"))
want, err := os.ReadFile(wantFile)
if err != nil {
t.Fatal("reading golden output:", err)
}
if !bytes.Equal(got, want) {
t.Errorf("'%v' output does not match expected in %s. Instead saw:\n%s", cmd, wantFile, got)
}
})
}
}
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