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177 lines
4.2 KiB
Go
177 lines
4.2 KiB
Go
/*
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Package mocks provides mocks and helpers used in testing.
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*/
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package mocks
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// Copyright 2017 Microsoft Corporation
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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import (
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"fmt"
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"io"
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"net/http"
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)
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// Body implements acceptable body over a string.
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type Body struct {
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s string
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b []byte
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isOpen bool
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closeAttempts int
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}
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// NewBody creates a new instance of Body.
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func NewBody(s string) *Body {
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return (&Body{s: s}).reset()
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}
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// NewBodyClose creates a new instance of Body.
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func NewBodyClose(s string) *Body {
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return &Body{s: s}
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}
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// Read reads into the passed byte slice and returns the bytes read.
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func (body *Body) Read(b []byte) (n int, err error) {
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if !body.IsOpen() {
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return 0, fmt.Errorf("ERROR: Body has been closed")
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}
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if len(body.b) == 0 {
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return 0, io.EOF
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}
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n = copy(b, body.b)
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body.b = body.b[n:]
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return n, nil
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}
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// Close closes the body.
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func (body *Body) Close() error {
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if body.isOpen {
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body.isOpen = false
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body.closeAttempts++
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}
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return nil
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}
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// CloseAttempts returns the number of times Close was called.
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func (body *Body) CloseAttempts() int {
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return body.closeAttempts
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}
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// IsOpen returns true if the Body has not been closed, false otherwise.
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func (body *Body) IsOpen() bool {
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return body.isOpen
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}
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func (body *Body) reset() *Body {
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body.isOpen = true
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body.b = []byte(body.s)
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return body
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}
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// Sender implements a simple null sender.
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type Sender struct {
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attempts int
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responses []*http.Response
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repeatResponse []int
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err error
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repeatError int
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emitErrorAfter int
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}
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// NewSender creates a new instance of Sender.
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func NewSender() *Sender {
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return &Sender{}
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}
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// Do accepts the passed request and, based on settings, emits a response and possible error.
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func (c *Sender) Do(r *http.Request) (resp *http.Response, err error) {
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c.attempts++
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if len(c.responses) > 0 {
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resp = c.responses[0]
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if resp != nil {
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if b, ok := resp.Body.(*Body); ok {
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b.reset()
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}
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}
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c.repeatResponse[0]--
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if c.repeatResponse[0] == 0 {
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c.responses = c.responses[1:]
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c.repeatResponse = c.repeatResponse[1:]
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}
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} else {
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resp = NewResponse()
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}
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if resp != nil {
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resp.Request = r
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}
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if c.emitErrorAfter > 0 {
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c.emitErrorAfter--
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} else if c.err != nil {
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err = c.err
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c.repeatError--
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if c.repeatError == 0 {
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c.err = nil
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}
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}
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return
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}
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// AppendResponse adds the passed http.Response to the response stack.
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func (c *Sender) AppendResponse(resp *http.Response) {
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c.AppendAndRepeatResponse(resp, 1)
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}
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// AppendAndRepeatResponse adds the passed http.Response to the response stack along with a
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// repeat count. A negative repeat count will return the response for all remaining calls to Do.
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func (c *Sender) AppendAndRepeatResponse(resp *http.Response, repeat int) {
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if c.responses == nil {
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c.responses = []*http.Response{resp}
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c.repeatResponse = []int{repeat}
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} else {
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c.responses = append(c.responses, resp)
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c.repeatResponse = append(c.repeatResponse, repeat)
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}
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}
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// Attempts returns the number of times Do was called.
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func (c *Sender) Attempts() int {
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return c.attempts
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}
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// SetError sets the error Do should return.
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func (c *Sender) SetError(err error) {
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c.SetAndRepeatError(err, 1)
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}
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// SetAndRepeatError sets the error Do should return and how many calls to Do will return the error.
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// A negative repeat value will return the error for all remaining calls to Do.
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func (c *Sender) SetAndRepeatError(err error, repeat int) {
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c.err = err
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c.repeatError = repeat
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}
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// SetEmitErrorAfter sets the number of attempts to be made before errors are emitted.
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func (c *Sender) SetEmitErrorAfter(ea int) {
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c.emitErrorAfter = ea
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}
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// T is a simple testing struct.
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type T struct {
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Name string `json:"name" xml:"Name"`
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Age int `json:"age" xml:"Age"`
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}
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