initial import

main_test.go

@@ -0,0 +1,65 @@
+// Copyright 2016 Google Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package main
+
+import (
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func run(t *testing.T, name string, args ...string) {
+	cmd := exec.Command(name, args...)
+	out, err := cmd.CombinedOutput()
+	if err != nil {
+		t.Fatalf("%s %s: %v\n%s", name, strings.Join(args, " "), err, out)
+	}
+}
+
+func tempDir(t *testing.T) string {
+	dir, err := ioutil.TempDir("", "addlicense")
+	if err != nil {
+		t.Fatal(err)
+	}
+	return dir
+}
+
+func TestInitial(t *testing.T) {
+	if os.Getenv("RUNME") != "" {
+		main()
+		return
+	}
+
+	tmp := tempDir(t)
+	t.Logf("tmp dir: %s", tmp)
+	run(t, "cp", "-r", "testdata/initial", tmp)
+
+	// run at least 2 times to ensure the program is idempotent
+	for i := 0; i < 2; i++ {
+		t.Logf("run #%d", i)
+		targs := []string{"-test.run=TestInitial"}
+		cargs := []string{"-l", "apache", "-c", "Google Inc.", "-y", "2016", tmp}
+		c := exec.Command(os.Args[0], append(targs, cargs...)...)
+		c.Env = []string{"RUNME=1"}
+		if out, err := c.CombinedOutput(); err != nil {
+			t.Fatalf("%v\n%s", err, out)
+		}
+
+		run(t, "diff", "-r", filepath.Join(tmp, "initial"), "testdata/expected")
+	}
+}