go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/config/helpers_test.go (about)

     1  // Copyright 2023 The LUCI Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package config
    16  
    17  import (
    18  	"bytes"
    19  	"context"
    20  	"fmt"
    21  	"net/http"
    22  	"net/http/httptest"
    23  	"testing"
    24  
    25  	"github.com/klauspost/compress/gzip"
    26  
    27  	. "github.com/smartystreets/goconvey/convey"
    28  	. "go.chromium.org/luci/common/testing/assertions"
    29  )
    30  
    31  func TestHelpers(t *testing.T) {
    32  	t.Parallel()
    33  
    34  	Convey("DownloadConfigFromSignedURL", t, func() {
    35  		ctx := context.Background()
    36  
    37  		Convey("nil client", func() {
    38  			content, err := DownloadConfigFromSignedURL(ctx, nil, "")
    39  			So(content, ShouldBeNil)
    40  			So(err, ShouldErrLike, "http client is nil")
    41  		})
    42  
    43  		Convey("empty signed url", func() {
    44  			content, err := DownloadConfigFromSignedURL(ctx, http.DefaultClient, "")
    45  			So(content, ShouldBeNil)
    46  			So(err, ShouldErrLike, "empty signedURL")
    47  		})
    48  
    49  		Convey("ok - compressed response", func(c C) {
    50  			fakeSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    51  				c.So(r.Header.Get("Accept-Encoding"), ShouldEqual, "gzip")
    52  				buf := &bytes.Buffer{}
    53  				gw := gzip.NewWriter(buf)
    54  				_, err := gw.Write([]byte("config content"))
    55  				c.So(err, ShouldBeNil)
    56  				c.So(gw.Close(), ShouldBeNil)
    57  				w.Header().Set("Content-Encoding", "gzip")
    58  				_, err = w.Write(buf.Bytes())
    59  				c.So(err, ShouldBeNil)
    60  			}))
    61  			defer fakeSrv.Close()
    62  
    63  			content, err := DownloadConfigFromSignedURL(ctx, http.DefaultClient, fakeSrv.URL)
    64  			So(err, ShouldBeNil)
    65  			So(content, ShouldEqual, []byte("config content"))
    66  		})
    67  
    68  		Convey("ok - uncompressed response", func(c C) {
    69  			fakeSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    70  				c.So(r.Header.Get("Accept-Encoding"), ShouldEqual, "gzip")
    71  				fmt.Fprint(w, "config content")
    72  			}))
    73  			defer fakeSrv.Close()
    74  
    75  			content, err := DownloadConfigFromSignedURL(ctx, http.DefaultClient, fakeSrv.URL)
    76  			So(err, ShouldBeNil)
    77  			So(content, ShouldEqual, []byte("config content"))
    78  		})
    79  
    80  		Convey("http error", func() {
    81  			fakeSrv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    82  				w.WriteHeader(http.StatusInternalServerError)
    83  				fmt.Fprint(w, "internal error")
    84  			}))
    85  			defer fakeSrv.Close()
    86  
    87  			content, err := DownloadConfigFromSignedURL(ctx, http.DefaultClient, fakeSrv.URL)
    88  			So(content, ShouldBeNil)
    89  			So(err, ShouldErrLike, `failed to download file, got http response code: 500, body: "internal error"`)
    90  		})
    91  	})
    92  }