// Copyright © 2018 The Knative Authors
//
// 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 completion

import (
	"testing"

	"github.com/spf13/cobra"
	"gotest.tools/v3/assert"
	"knative.dev/client/pkg/commands"
	"knative.dev/client/pkg/util"
	"knative.dev/client/pkg/util/test"
)

func TestCompletionUsage(t *testing.T) {
	completionCmd := NewCompletionCommand(&commands.KnParams{})
	assert.Assert(t, util.ContainsAllIgnoreCase(completionCmd.Use, "completion"))
	assert.Assert(t, util.ContainsAllIgnoreCase(completionCmd.Short, "completion", "shell"))
	assert.Assert(t, completionCmd.Run == nil)
	assert.Assert(t, completionCmd.RunE != nil)
}

func TestCompletionGeneration(t *testing.T) {
	for _, shell := range []string{"bash", "fish", "powershell", "zsh"} {
		completionCmd := NewCompletionCommand(&commands.KnParams{})
		c := test.CaptureOutput(t)
		err := completionCmd.RunE(&cobra.Command{}, []string{shell})
		assert.NilError(t, err)
		stdOut, stdErr := c.Close()
		assert.Assert(t, stdErr == "")
		assert.Assert(t, stdOut != "")
	}
}

func TestCompletionNoArg(t *testing.T) {
	completionCmd := NewCompletionCommand(&commands.KnParams{})
	err := completionCmd.RunE(&cobra.Command{}, []string{})
	assert.Assert(t, util.ContainsAll(err.Error(), "bash", "fish", "powershell", "zsh", "one", "argument"))
}

func TestCompletionWrongArg(t *testing.T) {
	completionCmd := NewCompletionCommand(&commands.KnParams{})
	err := completionCmd.RunE(&cobra.Command{}, []string{"sh"})
	assert.Assert(t, util.ContainsAll(err.Error(), "bash", "fish", "powershell", "zsh", "support"))
}