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// Copyright 2018 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.
//go:build go1.12
// +build go1.12
package unitchecker_test
// This test depends on features such as
// go vet's support for vetx files (1.11) and
// the (*os.ProcessState).ExitCode method (1.12).
import (
"flag"
"os"
"os/exec"
"regexp"
"runtime"
"strings"
"testing"
"golang.org/x/tools/go/analysis/passes/findcall"
"golang.org/x/tools/go/analysis/passes/printf"
"golang.org/x/tools/go/analysis/unitchecker"
"golang.org/x/tools/go/packages/packagestest"
)
func TestMain(m *testing.M) {
if os.Getenv("UNITCHECKER_CHILD") == "1" {
// child process
main()
panic("unreachable")
}
flag.Parse()
os.Exit(m.Run())
}
func main() {
unitchecker.Main(
findcall.Analyzer,
printf.Analyzer,
)
}
// This is a very basic integration test of modular
// analysis with facts using unitchecker under "go vet".
// It fork/execs the main function above.
func TestIntegration(t *testing.T) { packagestest.TestAll(t, testIntegration) }
func testIntegration(t *testing.T, exporter packagestest.Exporter) {
if runtime.GOOS != "linux" && runtime.GOOS != "darwin" {
t.Skipf("skipping fork/exec test on this platform")
}
exported := packagestest.Export(t, exporter, []packagestest.Module{{
Name: "golang.org/fake",
Files: map[string]interface{}{
"a/a.go": `package a
func _() {
MyFunc123()
}
func MyFunc123() {}
`,
"b/b.go": `package b
import "golang.org/fake/a"
func _() {
a.MyFunc123()
MyFunc123()
}
func MyFunc123() {}
`,
}}})
defer exported.Cleanup()
const wantA = `# golang.org/fake/a
([/._\-a-zA-Z0-9]+[\\/]fake[\\/])?a/a.go:4:11: call of MyFunc123\(...\)
`
const wantB = `# golang.org/fake/b
([/._\-a-zA-Z0-9]+[\\/]fake[\\/])?b/b.go:6:13: call of MyFunc123\(...\)
([/._\-a-zA-Z0-9]+[\\/]fake[\\/])?b/b.go:7:11: call of MyFunc123\(...\)
`
const wantAJSON = `# golang.org/fake/a
\{
"golang.org/fake/a": \{
"findcall": \[
\{
"posn": "([/._\-a-zA-Z0-9]+[\\/]fake[\\/])?a/a.go:4:11",
"message": "call of MyFunc123\(...\)"
\}
\]
\}
\}
`
for _, test := range []struct {
args string
wantOut string
wantExit int
}{
{args: "golang.org/fake/a", wantOut: wantA, wantExit: 2},
{args: "golang.org/fake/b", wantOut: wantB, wantExit: 2},
{args: "golang.org/fake/a golang.org/fake/b", wantOut: wantA + wantB, wantExit: 2},
{args: "-json golang.org/fake/a", wantOut: wantAJSON, wantExit: 0},
{args: "-c=0 golang.org/fake/a", wantOut: wantA + "4 MyFunc123\\(\\)\n", wantExit: 2},
} {
cmd := exec.Command("go", "vet", "-vettool="+os.Args[0], "-findcall.name=MyFunc123")
cmd.Args = append(cmd.Args, strings.Fields(test.args)...)
cmd.Env = append(exported.Config.Env, "UNITCHECKER_CHILD=1")
cmd.Dir = exported.Config.Dir
out, err := cmd.CombinedOutput()
exitcode := 0
if exitErr, ok := err.(*exec.ExitError); ok {
exitcode = exitErr.ExitCode()
}
if exitcode != test.wantExit {
t.Errorf("%s: got exit code %d, want %d", test.args, exitcode, test.wantExit)
}
matched, err := regexp.Match(test.wantOut, out)
if err != nil {
t.Fatal(err)
}
if !matched {
t.Errorf("%s: got <<%s>>, want match of regexp <<%s>>", test.args, out, test.wantOut)
}
}
}
|
