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