github.com/aca02djr/gb@v0.4.1/importer/build_test.go

// Copyright 2011 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 importer

import (
	"io"
	"path/filepath"
	"reflect"
	"runtime"
	"testing"
)

func TestMatch(t *testing.T) {
	ctxt := &Importer{
		Context: &Context{
			GOOS:   runtime.GOOS,
			GOARCH: runtime.GOARCH,
		},
		Root: filepath.Join(runtime.GOROOT()),
	}
	what := "default"
	match := func(tag string, want map[string]bool) {
		m := make(map[string]bool)
		if !ctxt.match(tag, m) {
			t.Errorf("%s context should match %s, does not", what, tag)
		}
		if !reflect.DeepEqual(m, want) {
			t.Errorf("%s tags = %v, want %v", tag, m, want)
		}
	}
	nomatch := func(tag string, want map[string]bool) {
		m := make(map[string]bool)
		if ctxt.match(tag, m) {
			t.Errorf("%s context should NOT match %s, does", what, tag)
		}
		if !reflect.DeepEqual(m, want) {
			t.Errorf("%s tags = %v, want %v", tag, m, want)
		}
	}

	match(runtime.GOOS+","+runtime.GOARCH, map[string]bool{runtime.GOOS: true, runtime.GOARCH: true})
	match(runtime.GOOS+","+runtime.GOARCH+",!foo", map[string]bool{runtime.GOOS: true, runtime.GOARCH: true, "foo": true})
	nomatch(runtime.GOOS+","+runtime.GOARCH+",foo", map[string]bool{runtime.GOOS: true, runtime.GOARCH: true, "foo": true})

	what = "modified"
	ctxt.BuildTags = []string{"foo"}
	match(runtime.GOOS+","+runtime.GOARCH, map[string]bool{runtime.GOOS: true, runtime.GOARCH: true})
	match(runtime.GOOS+","+runtime.GOARCH+",foo", map[string]bool{runtime.GOOS: true, runtime.GOARCH: true, "foo": true})
	nomatch(runtime.GOOS+","+runtime.GOARCH+",!foo", map[string]bool{runtime.GOOS: true, runtime.GOARCH: true, "foo": true})
	match(runtime.GOOS+","+runtime.GOARCH+",!bar", map[string]bool{runtime.GOOS: true, runtime.GOARCH: true, "bar": true})
	nomatch(runtime.GOOS+","+runtime.GOARCH+",bar", map[string]bool{runtime.GOOS: true, runtime.GOARCH: true, "bar": true})
	nomatch("!", map[string]bool{})
}

func TestShouldBuild(t *testing.T) {
	const file1 = "// +build tag1\n\n" +
		"package main\n"
	want1 := map[string]bool{"tag1": true}

	const file2 = "// +build cgo\n\n" +
		"// This package implements parsing of tags like\n" +
		"// +build tag1\n" +
		"package build"
	want2 := map[string]bool{"cgo": true}

	const file3 = "// Copyright The Go Authors.\n\n" +
		"package build\n\n" +
		"// shouldBuild checks tags given by lines of the form\n" +
		"// +build tag\n" +
		"func shouldBuild(content []byte)\n"
	want3 := map[string]bool{}

	ctx := &Importer{Context: &Context{BuildTags: []string{"tag1"}}}
	m := map[string]bool{}
	if !ctx.shouldBuild([]byte(file1), m) {
		t.Errorf("shouldBuild(file1) = false, want true")
	}
	if !reflect.DeepEqual(m, want1) {
		t.Errorf("shoudBuild(file1) tags = %v, want %v", m, want1)
	}

	m = map[string]bool{}
	if ctx.shouldBuild([]byte(file2), m) {
		t.Errorf("shouldBuild(file2) = true, want fakse")
	}
	if !reflect.DeepEqual(m, want2) {
		t.Errorf("shoudBuild(file2) tags = %v, want %v", m, want2)
	}

	m = map[string]bool{}
	ctx = &Importer{Context: &Context{BuildTags: nil}}
	if !ctx.shouldBuild([]byte(file3), m) {
		t.Errorf("shouldBuild(file3) = false, want true")
	}
	if !reflect.DeepEqual(m, want3) {
		t.Errorf("shoudBuild(file3) tags = %v, want %v", m, want3)
	}
}

type readNopCloser struct {
	io.Reader
}

func (r readNopCloser) Close() error {
	return nil
}

var (
	ctxtP9      = Context{GOARCH: "arm", GOOS: "plan9"}
	ctxtAndroid = Context{GOARCH: "arm", GOOS: "android"}
)

var matchFileTests = []struct {
	ctxt  Context
	name  string
	data  string
	match bool
}{
	{ctxtP9, "foo_arm.go", "", true},
	{ctxtP9, "foo1_arm.go", "// +build linux\n\npackage main\n", false},
	{ctxtP9, "foo_darwin.go", "", false},
	{ctxtP9, "foo.go", "", true},
	{ctxtP9, "foo1.go", "// +build linux\n\npackage main\n", false},
	{ctxtP9, "foo.badsuffix", "", false},
	{ctxtAndroid, "foo_linux.go", "", true},
	{ctxtAndroid, "foo_android.go", "", true},
	{ctxtAndroid, "foo_plan9.go", "", false},
	{ctxtAndroid, "android.go", "", true},
	{ctxtAndroid, "plan9.go", "", true},
	{ctxtAndroid, "plan9_test.go", "", true},
	{ctxtAndroid, "arm.s", "", true},
	{ctxtAndroid, "amd64.s", "", true},
}

var (
	expandSrcDirPath = filepath.Join(string(filepath.Separator)+"projects", "src", "add")
)

var expandSrcDirTests = []struct {
	input, expected string
}{
	{"-L ${SRCDIR}/libs -ladd", "-L /projects/src/add/libs -ladd"},
	{"${SRCDIR}/add_linux_386.a -pthread -lstdc++", "/projects/src/add/add_linux_386.a -pthread -lstdc++"},
	{"Nothing to expand here!", "Nothing to expand here!"},
	{"$", "$"},
	{"$$", "$$"},
	{"${", "${"},
	{"$}", "$}"},
	{"$FOO ${BAR}", "$FOO ${BAR}"},
	{"Find me the $SRCDIRECTORY.", "Find me the $SRCDIRECTORY."},
	{"$SRCDIR is missing braces", "$SRCDIR is missing braces"},
}

func TestExpandSrcDir(t *testing.T) {
	for _, test := range expandSrcDirTests {
		output, _ := expandSrcDir(test.input, expandSrcDirPath)
		if output != test.expected {
			t.Errorf("%q expands to %q with SRCDIR=%q when %q is expected", test.input, output, expandSrcDirPath, test.expected)
		} else {
			t.Logf("%q expands to %q with SRCDIR=%q", test.input, output, expandSrcDirPath)
		}
	}
}

func TestShellSafety(t *testing.T) {
	tests := []struct {
		input, srcdir, expected string
		result                  bool
	}{
		{"-I${SRCDIR}/../include", "/projects/src/issue 11868", "-I/projects/src/issue 11868/../include", true},
		{"-X${SRCDIR}/1,${SRCDIR}/2", "/projects/src/issue 11868", "-X/projects/src/issue 11868/1,/projects/src/issue 11868/2", true},
		{"-I/tmp -I/tmp", "/tmp2", "-I/tmp -I/tmp", false},
		{"-I/tmp", "/tmp/[0]", "-I/tmp", true},
		{"-I${SRCDIR}/dir", "/tmp/[0]", "-I/tmp/[0]/dir", false},
	}
	for _, test := range tests {
		output, ok := expandSrcDir(test.input, test.srcdir)
		if ok != test.result {
			t.Errorf("Expected %t while %q expands to %q with SRCDIR=%q; got %t", test.result, test.input, output, test.srcdir, ok)
		}
		if output != test.expected {
			t.Errorf("Expected %q while %q expands with SRCDIR=%q; got %q", test.expected, test.input, test.srcdir, output)
		}
	}
}