Add test for --repository-file

cmd/restic/global_test.go

@@ -2,8 +2,11 @@ package main
 
 import (
 	"bytes"
+	"io/ioutil"
+	"path/filepath"
 	"testing"
 
+	"github.com/restic/restic/internal/test"
 	rtest "github.com/restic/restic/internal/test"
 )
 
@@ -26,3 +29,33 @@ func Test_PrintFunctionsRespectsGlobalStdout(t *testing.T) {
 		buf.Reset()
 	}
 }
+
+func TestReadRepo(t *testing.T) {
+	tempDir, cleanup := test.TempDir(t)
+	defer cleanup()
+
+	// test --repo option
+	var opts GlobalOptions
+	opts.Repo = tempDir
+	repo, err := ReadRepo(opts)
+	rtest.OK(t, err)
+	rtest.Equals(t, tempDir, repo)
+
+	// test --repository-file option
+	foo := filepath.Join(tempDir, "foo")
+	err = ioutil.WriteFile(foo, []byte(tempDir+"\n"), 0666)
+	rtest.OK(t, err)
+
+	var opts2 GlobalOptions
+	opts2.RepositoryFile = foo
+	repo, err = ReadRepo(opts2)
+	rtest.OK(t, err)
+	rtest.Equals(t, tempDir, repo)
+
+	var opts3 GlobalOptions
+	opts3.RepositoryFile = foo + "-invalid"
+	repo, err = ReadRepo(opts3)
+	if err == nil {
+		t.Fatal("must not read repository path from invalid file path")
+	}
+}