improve coverage in tests

(cherry picked from commit bd2b9ac225)

ctl/backup_test.go

@@ -0,0 +1,30 @@
+// Copyright 2021 Molecula Corp. All rights reserved.
+package ctl
+
+import (
+	"context"
+	"errors"
+	"os"
+	"testing"
+)
+
+func TestBackupCommand_Run(t *testing.T) {
+	cm := NewBackupCommand(os.Stdin, os.Stdout, os.Stderr)
+	cm.OutputDir = ""
+	err := cm.Run(context.Background())
+	if !errors.Is(err, UsageError) {
+		t.Fatalf("expected usage error, got %v", err)
+	}
+	cm.OutputDir = "foo"
+	cm.Concurrency = 0
+	err = cm.Run(context.Background())
+	if !errors.Is(err, UsageError) {
+		t.Fatalf("expected usage error, got %v", err)
+	}
+	cm.Concurrency = 1
+	cm.HeaderTimeoutStr = "until the cat wakes up"
+	err = cm.Run(context.Background())
+	if !errors.Is(err, UsageError) {
+		t.Fatalf("expected usage error, got %v", err)
+	}
+}

ctl/restore_tar.go

@@ -80,7 +80,7 @@ func (cmd *RestoreTarCommand) Run(ctx context.Context) (err error) {
 	} else {
 		file, err := os.Open(cmd.Path)
 		if err != nil {
-			return (err)
+			return err
 		}
 		defer file.Close()
 		f = file

ctl/restore_tar_test.go

@@ -3,7 +3,9 @@ package ctl
 import (
 	"bytes"
 	"context"
+	"errors"
 	"net/http"
+	"os"
 	"strings"
 	"testing"
 
@@ -20,6 +22,17 @@ func TestRestoreTarCommand_Run(t *testing.T) {
 	cm := NewRestoreTarCommand(stdin, stdout, stderr)
 	hostport := cmd.API.Node().URI.HostPort()
 	cm.Host = hostport
+	cm.Path = ""
+	err := cm.Run(context.Background())
+	if !errors.Is(err, UsageError) {
+		t.Fatalf("expected usage error with empty path, got %v", err)
+	}
+	cm.Path = "nonexistent-file"
+	err = cm.Run(context.Background())
+	if _, ok := err.(*os.PathError); !ok {
+		t.Fatalf("expected path error with nonexistent path, got %v", err)
+	}
+	// use stdin
 	cm.Path = "-"
 
 	resp, err := http.DefaultClient.Do(test.MustNewHTTPRequest("POST", "http://"+hostport+"/index/i", strings.NewReader("")))

ctl/restore_test.go

@@ -0,0 +1,24 @@
+// Copyright 2021 Molecula Corp. All rights reserved.
+package ctl
+
+import (
+	"context"
+	"errors"
+	"os"
+	"testing"
+)
+
+func TestRestoreCommand_Run(t *testing.T) {
+	cm := NewRestoreCommand(os.Stdin, os.Stdout, os.Stderr)
+	cm.Path = ""
+	err := cm.Run(context.Background())
+	if !errors.Is(err, UsageError) {
+		t.Fatalf("expected usage error, got %v", err)
+	}
+	cm.Path = "foo"
+	cm.Concurrency = 0
+	err = cm.Run(context.Background())
+	if !errors.Is(err, UsageError) {
+		t.Fatalf("expected usage error, got %v", err)
+	}
+}