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path: root/client/go/src/cmd/command_tester.go
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// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
// A helper for testing commands
// Author: bratseth

package cmd

import (
    "bytes"
    "github.com/vespa-engine/vespa/utils"
    "github.com/stretchr/testify/assert"
	"io/ioutil"
    "net/http"
    "testing"
    "time"
)

func executeCommand(t *testing.T, client *mockHttpClient, args []string, moreArgs []string) (standardout string) {
    utils.ActiveHttpClient = client

    // Reset - persistent flags in Cobra persists over tests
	rootCmd.SetArgs([]string{"status", "-t", ""})
	rootCmd.Execute()

	b := bytes.NewBufferString("")
    utils.Out = b
	rootCmd.SetArgs(append(args, moreArgs...))
	rootCmd.Execute()
	out, err := ioutil.ReadAll(b)
	assert.Empty(t, err, "No error")
	return string(out)
}

type mockHttpClient struct {
    // The HTTP status code that will be returned from the next invocation. Default: 200
    nextStatus int

    // The response body code that will be returned from the next invocation. Default: ""
    nextBody string

    // A recording of the last HTTP request made through this
    lastRequest *http.Request
}

func (c *mockHttpClient) Do(request *http.Request, timeout time.Duration) (response *http.Response, error error) {
    if c.nextStatus == 0 {
        c.nextStatus = 200
    }
    c.lastRequest = request
    return &http.Response{
        StatusCode: c.nextStatus,
        Body:       ioutil.NopCloser(bytes.NewBufferString(c.nextBody)),
        Header:     make(http.Header),
    },
    nil
}