103 lines
2.3 KiB
Go
103 lines
2.3 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 go1.12 features such as go vet's support for
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// GOVETTOOL, and the (*os/exec.ExitError).ExitCode method.
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import (
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"flag"
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"log"
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"os"
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"os/exec"
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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"
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"golang.org/x/tools/go/analysis/analysistest"
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"golang.org/x/tools/go/analysis/internal/analysisflags"
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"golang.org/x/tools/go/analysis/internal/unitchecker"
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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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)
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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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// test
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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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findcall.Analyzer.Flags.Set("name", "MyFunc123")
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var analyzers = []*analysis.Analyzer{
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findcall.Analyzer,
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printf.Analyzer,
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}
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if err := analysis.Validate(analyzers); err != nil {
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log.Fatal(err)
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}
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analyzers = analysisflags.Parse(analyzers, true)
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args := flag.Args()
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if len(args) != 1 || !strings.HasSuffix(args[0], ".cfg") {
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log.Fatalf("invalid command: want .cfg file")
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}
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unitchecker.Main(args[0], analyzers)
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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) {
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if runtime.GOOS != "linux" {
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t.Skipf("skipping fork/exec test on this platform")
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}
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testdata := analysistest.TestData()
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cmd := exec.Command("go", "vet", "b")
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cmd.Env = append(os.Environ(),
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"GOVETTOOL="+os.Args[0],
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"UNITCHECKER_CHILD=1",
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"GOPATH="+testdata,
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)
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out, err := cmd.CombinedOutput()
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exitcode := -1
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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 != 2 {
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t.Errorf("got exit code %d, want 2", exitcode)
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}
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want := `
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# a
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testdata/src/a/a.go:4:11: call of MyFunc123(...)
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# b
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testdata/src/b/b.go:6:13: call of MyFunc123(...)
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testdata/src/b/b.go:7:11: call of MyFunc123(...)
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`[1:]
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if got := string(out); got != want {
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t.Errorf("got <<%s>>, want <<%s>>", got, want)
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}
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if t.Failed() {
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t.Logf("err=%v stderr=<<%s>", err, cmd.Stderr)
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}
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}
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