t.Fatalf("select expects: %v, got %v", u1.ID, gotUsers[0].ID)
		} else if gotUsers[1].ID != u2.ID {
			t.Fatalf("select expects: %v, got %v", u2.ID, gotUsers[1].ID)
		}

		u1.Name = "Jinzhu"
		u2.Name = "Zhang"
		if results := DB.Save([]*user{&u1, &u2}); results.Error != nil {
			t.Fatalf("errors happened on update: %v", results.Error)
		} else if results.RowsAffected != 2 {

	expectedOutput string // Expected constant output

	wantException bool
}

func verifyExecTestOutput(t *testing.T, cmd *cobra.Command, c execTestCase) {
	if c.wantException {
		// Ensure tests do not hang for 30s
		c.args = append(c.args, "--timeout=20ms")
	}
	var out bytes.Buffer
	cmd.SetArgs(c.args)
	cmd.SilenceUsage = true
	cmd.SetOut(&out)
	cmd.SetErr(&out)

	fErr := cmd.Execute()