func TestRun(t *testing.T) { type test struct { args []string expectFail bool }

tests := []test{
	{args: []string{"hello"}, expectFail: false},
	{args: []string{"world"}, expectFail: false},
	{args: []string{"foo", "bar"}, expectFail: false},
	{args: []string{"baz"}, expectFail: true},
}

for _, tc := range tests {
	t.Run(fmt.Sprintf("Args: %v", tc.args), func(t *testing.T) {
		err := run(tc.args)
		if tc.expectFail && err == nil {
			t.Errorf("Expected an error but got nil")
		}
		if !tc.expectFail && err != nil {
			t.Errorf("Expected no error but got: %v", err)
		}
	})
}

}