145 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Go
		
	
	
	
			
		
		
	
	
			145 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			Go
		
	
	
	
// Copyright 2021 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package lfs
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import (
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	"bytes"
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	"context"
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	"encoding/json"
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	"io"
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	"io/ioutil"
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	"net/http"
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	"strings"
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	"testing"
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	"github.com/stretchr/testify/assert"
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)
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type RoundTripFunc func(req *http.Request) *http.Response
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func (f RoundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
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	return f(req), nil
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}
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type DummyTransferAdapter struct {
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}
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func (a *DummyTransferAdapter) Name() string {
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	return "dummy"
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}
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func (a *DummyTransferAdapter) Download(ctx context.Context, r *ObjectResponse) (io.ReadCloser, error) {
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	return ioutil.NopCloser(bytes.NewBufferString("dummy")), nil
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}
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func TestHTTPClientDownload(t *testing.T) {
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	oid := "fb8f7d8435968c4f82a726a92395be4d16f2f63116caf36c8ad35c60831ab041"
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	size := int64(6)
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	roundTripHandler := func(req *http.Request) *http.Response {
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		url := req.URL.String()
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		if strings.Contains(url, "status-not-ok") {
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			return &http.Response{StatusCode: http.StatusBadRequest}
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		}
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		if strings.Contains(url, "invalid-json-response") {
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			return &http.Response{StatusCode: http.StatusOK, Body: ioutil.NopCloser(bytes.NewBufferString("invalid json"))}
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		}
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		if strings.Contains(url, "valid-batch-request-download") {
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			assert.Equal(t, "POST", req.Method)
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			assert.Equal(t, MediaType, req.Header.Get("Content-type"), "case %s: error should match", url)
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			assert.Equal(t, MediaType, req.Header.Get("Accept"), "case %s: error should match", url)
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			var batchRequest BatchRequest
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			err := json.NewDecoder(req.Body).Decode(&batchRequest)
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			assert.NoError(t, err)
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			assert.Equal(t, "download", batchRequest.Operation)
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			assert.Equal(t, 1, len(batchRequest.Objects))
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			assert.Equal(t, oid, batchRequest.Objects[0].Oid)
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			assert.Equal(t, size, batchRequest.Objects[0].Size)
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			batchResponse := &BatchResponse{
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				Transfer: "dummy",
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				Objects:  make([]*ObjectResponse, 1),
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			}
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			payload := new(bytes.Buffer)
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			json.NewEncoder(payload).Encode(batchResponse)
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			return &http.Response{StatusCode: http.StatusOK, Body: ioutil.NopCloser(payload)}
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		}
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		if strings.Contains(url, "invalid-response-no-objects") {
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			batchResponse := &BatchResponse{Transfer: "dummy"}
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			payload := new(bytes.Buffer)
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			json.NewEncoder(payload).Encode(batchResponse)
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			return &http.Response{StatusCode: http.StatusOK, Body: ioutil.NopCloser(payload)}
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		}
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		if strings.Contains(url, "unknown-transfer-adapter") {
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			batchResponse := &BatchResponse{Transfer: "unknown_adapter"}
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			payload := new(bytes.Buffer)
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			json.NewEncoder(payload).Encode(batchResponse)
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			return &http.Response{StatusCode: http.StatusOK, Body: ioutil.NopCloser(payload)}
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		}
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		t.Errorf("Unknown test case: %s", url)
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		return nil
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	}
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	hc := &http.Client{Transport: RoundTripFunc(roundTripHandler)}
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	dummy := &DummyTransferAdapter{}
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	var cases = []struct {
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		endpoint      string
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		expectederror string
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	}{
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		// case 0
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		{
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			endpoint:      "https://status-not-ok.io",
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			expectederror: "Unexpected servers response: ",
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		},
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		// case 1
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		{
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			endpoint:      "https://invalid-json-response.io",
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			expectederror: "json.Decode: ",
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		},
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		// case 2
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		{
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			endpoint:      "https://valid-batch-request-download.io",
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			expectederror: "",
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		},
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		// case 3
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		{
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			endpoint:      "https://invalid-response-no-objects.io",
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			expectederror: "No objects in result",
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		},
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		// case 4
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		{
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			endpoint:      "https://unknown-transfer-adapter.io",
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			expectederror: "Transferadapter not found: ",
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		},
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	}
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	for n, c := range cases {
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		client := &HTTPClient{
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			client:    hc,
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			endpoint:  c.endpoint,
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			transfers: make(map[string]TransferAdapter),
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		}
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		client.transfers["dummy"] = dummy
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		_, err := client.Download(context.Background(), oid, size)
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		if len(c.expectederror) > 0 {
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			assert.True(t, strings.Contains(err.Error(), c.expectederror), "case %d: '%s' should contain '%s'", n, err.Error(), c.expectederror)
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		} else {
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			assert.NoError(t, err, "case %d", n)
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		}
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	}
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}
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