Merge branch '16774-keep-web-errors' refs #16774
[arvados.git] / services / keep-web / s3_test.go
index d25e9e47fcacd3e2c0e47565fa52ec52b3b2f6b0..b9a6d85ecb1a6bacc75b2a9b94b3ebc54c851f7e 100644 (file)
@@ -10,7 +10,9 @@ import (
        "fmt"
        "io/ioutil"
        "net/http"
+       "net/url"
        "os"
+       "os/exec"
        "strings"
        "sync"
        "time"
@@ -70,12 +72,13 @@ func (s *IntegrationSuite) s3setup(c *check.C) s3stage {
        err = arv.RequestAndDecode(&coll, "GET", "arvados/v1/collections/"+coll.UUID, nil, nil)
        c.Assert(err, check.IsNil)
 
-       auth := aws.NewAuth(arvadostest.ActiveTokenV2, arvadostest.ActiveTokenV2, "", time.Now().Add(time.Hour))
+       auth := aws.NewAuth(arvadostest.ActiveTokenUUID, arvadostest.ActiveToken, "", time.Now().Add(time.Hour))
        region := aws.Region{
                Name:       s.testServer.Addr,
                S3Endpoint: "http://" + s.testServer.Addr,
        }
        client := s3.New(*auth, region)
+       client.Signature = aws.V4Signature
        return s3stage{
                arv:  arv,
                ac:   ac,
@@ -104,6 +107,44 @@ func (stage s3stage) teardown(c *check.C) {
        }
 }
 
+func (s *IntegrationSuite) TestS3Signatures(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+
+       bucket := stage.collbucket
+       for _, trial := range []struct {
+               success   bool
+               signature int
+               accesskey string
+               secretkey string
+       }{
+               {true, aws.V2Signature, arvadostest.ActiveToken, "none"},
+               {true, aws.V2Signature, url.QueryEscape(arvadostest.ActiveTokenV2), "none"},
+               {true, aws.V2Signature, strings.Replace(arvadostest.ActiveTokenV2, "/", "_", -1), "none"},
+               {false, aws.V2Signature, "none", "none"},
+               {false, aws.V2Signature, "none", arvadostest.ActiveToken},
+
+               {true, aws.V4Signature, arvadostest.ActiveTokenUUID, arvadostest.ActiveToken},
+               {true, aws.V4Signature, arvadostest.ActiveToken, arvadostest.ActiveToken},
+               {true, aws.V4Signature, url.QueryEscape(arvadostest.ActiveTokenV2), url.QueryEscape(arvadostest.ActiveTokenV2)},
+               {true, aws.V4Signature, strings.Replace(arvadostest.ActiveTokenV2, "/", "_", -1), strings.Replace(arvadostest.ActiveTokenV2, "/", "_", -1)},
+               {false, aws.V4Signature, arvadostest.ActiveToken, ""},
+               {false, aws.V4Signature, arvadostest.ActiveToken, "none"},
+               {false, aws.V4Signature, "none", arvadostest.ActiveToken},
+               {false, aws.V4Signature, "none", "none"},
+       } {
+               c.Logf("%#v", trial)
+               bucket.S3.Auth = *(aws.NewAuth(trial.accesskey, trial.secretkey, "", time.Now().Add(time.Hour)))
+               bucket.S3.Signature = trial.signature
+               _, err := bucket.GetReader("emptyfile")
+               if trial.success {
+                       c.Check(err, check.IsNil)
+               } else {
+                       c.Check(err, check.NotNil)
+               }
+       }
+}
+
 func (s *IntegrationSuite) TestS3HeadBucket(c *check.C) {
        stage := s.s3setup(c)
        defer stage.teardown(c)
@@ -137,7 +178,9 @@ func (s *IntegrationSuite) testS3GetObject(c *check.C, bucket *s3.Bucket, prefix
 
        // GetObject
        rdr, err = bucket.GetReader(prefix + "missingfile")
-       c.Check(err, check.ErrorMatches, `404 Not Found`)
+       c.Check(err.(*s3.Error).StatusCode, check.Equals, 404)
+       c.Check(err.(*s3.Error).Code, check.Equals, `NoSuchKey`)
+       c.Check(err, check.ErrorMatches, `The specified key does not exist.`)
 
        // HeadObject
        exists, err := bucket.Exists(prefix + "missingfile")
@@ -154,9 +197,10 @@ func (s *IntegrationSuite) testS3GetObject(c *check.C, bucket *s3.Bucket, prefix
        c.Check(err, check.IsNil)
 
        // HeadObject
-       exists, err = bucket.Exists(prefix + "sailboat.txt")
+       resp, err := bucket.Head(prefix+"sailboat.txt", nil)
        c.Check(err, check.IsNil)
-       c.Check(exists, check.Equals, true)
+       c.Check(resp.StatusCode, check.Equals, http.StatusOK)
+       c.Check(resp.ContentLength, check.Equals, int64(4))
 }
 
 func (s *IntegrationSuite) TestS3CollectionPutObjectSuccess(c *check.C) {
@@ -171,18 +215,26 @@ func (s *IntegrationSuite) TestS3ProjectPutObjectSuccess(c *check.C) {
 }
 func (s *IntegrationSuite) testS3PutObjectSuccess(c *check.C, bucket *s3.Bucket, prefix string) {
        for _, trial := range []struct {
-               path string
-               size int
+               path        string
+               size        int
+               contentType string
        }{
                {
-                       path: "newfile",
-                       size: 128000000,
+                       path:        "newfile",
+                       size:        128000000,
+                       contentType: "application/octet-stream",
+               }, {
+                       path:        "newdir/newfile",
+                       size:        1 << 26,
+                       contentType: "application/octet-stream",
                }, {
-                       path: "newdir/newfile",
-                       size: 1 << 26,
+                       path:        "newdir1/newdir2/newfile",
+                       size:        0,
+                       contentType: "application/octet-stream",
                }, {
-                       path: "newdir1/newdir2/newfile",
-                       size: 0,
+                       path:        "newdir1/newdir2/newdir3/",
+                       size:        0,
+                       contentType: "application/x-directory",
                },
        } {
                c.Logf("=== %v", trial)
@@ -190,16 +242,21 @@ func (s *IntegrationSuite) testS3PutObjectSuccess(c *check.C, bucket *s3.Bucket,
                objname := prefix + trial.path
 
                _, err := bucket.GetReader(objname)
-               c.Assert(err, check.ErrorMatches, `404 Not Found`)
+               c.Check(err.(*s3.Error).StatusCode, check.Equals, 404)
+               c.Check(err.(*s3.Error).Code, check.Equals, `NoSuchKey`)
+               c.Assert(err, check.ErrorMatches, `The specified key does not exist.`)
 
                buf := make([]byte, trial.size)
                rand.Read(buf)
 
-               err = bucket.PutReader(objname, bytes.NewReader(buf), int64(len(buf)), "application/octet-stream", s3.Private, s3.Options{})
+               err = bucket.PutReader(objname, bytes.NewReader(buf), int64(len(buf)), trial.contentType, s3.Private, s3.Options{})
                c.Check(err, check.IsNil)
 
                rdr, err := bucket.GetReader(objname)
-               if !c.Check(err, check.IsNil) {
+               if strings.HasSuffix(trial.path, "/") && !s.testServer.Config.cluster.Collections.S3FolderObjects {
+                       c.Check(err, check.NotNil)
+                       continue
+               } else if !c.Check(err, check.IsNil) {
                        continue
                }
                buf2, err := ioutil.ReadAll(rdr)
@@ -209,6 +266,89 @@ func (s *IntegrationSuite) testS3PutObjectSuccess(c *check.C, bucket *s3.Bucket,
        }
 }
 
+func (s *IntegrationSuite) TestS3ProjectPutObjectNotSupported(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+       bucket := stage.projbucket
+
+       for _, trial := range []struct {
+               path        string
+               size        int
+               contentType string
+       }{
+               {
+                       path:        "newfile",
+                       size:        1234,
+                       contentType: "application/octet-stream",
+               }, {
+                       path:        "newdir/newfile",
+                       size:        1234,
+                       contentType: "application/octet-stream",
+               }, {
+                       path:        "newdir2/",
+                       size:        0,
+                       contentType: "application/x-directory",
+               },
+       } {
+               c.Logf("=== %v", trial)
+
+               _, err := bucket.GetReader(trial.path)
+               c.Check(err.(*s3.Error).StatusCode, check.Equals, 404)
+               c.Check(err.(*s3.Error).Code, check.Equals, `NoSuchKey`)
+               c.Assert(err, check.ErrorMatches, `The specified key does not exist.`)
+
+               buf := make([]byte, trial.size)
+               rand.Read(buf)
+
+               err = bucket.PutReader(trial.path, bytes.NewReader(buf), int64(len(buf)), trial.contentType, s3.Private, s3.Options{})
+               c.Check(err.(*s3.Error).StatusCode, check.Equals, 400)
+               c.Check(err.(*s3.Error).Code, check.Equals, `InvalidArgument`)
+               c.Check(err, check.ErrorMatches, `(mkdir "by_id/zzzzz-j7d0g-[a-z0-9]{15}/newdir2?"|open "/zzzzz-j7d0g-[a-z0-9]{15}/newfile") failed: invalid argument`)
+
+               _, err = bucket.GetReader(trial.path)
+               c.Check(err.(*s3.Error).StatusCode, check.Equals, 404)
+               c.Check(err.(*s3.Error).Code, check.Equals, `NoSuchKey`)
+               c.Assert(err, check.ErrorMatches, `The specified key does not exist.`)
+       }
+}
+
+func (s *IntegrationSuite) TestS3CollectionDeleteObject(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+       s.testS3DeleteObject(c, stage.collbucket, "")
+}
+func (s *IntegrationSuite) TestS3ProjectDeleteObject(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+       s.testS3DeleteObject(c, stage.projbucket, stage.coll.Name+"/")
+}
+func (s *IntegrationSuite) testS3DeleteObject(c *check.C, bucket *s3.Bucket, prefix string) {
+       s.testServer.Config.cluster.Collections.S3FolderObjects = true
+       for _, trial := range []struct {
+               path string
+       }{
+               {"/"},
+               {"nonexistentfile"},
+               {"emptyfile"},
+               {"sailboat.txt"},
+               {"sailboat.txt/"},
+               {"emptydir"},
+               {"emptydir/"},
+       } {
+               objname := prefix + trial.path
+               comment := check.Commentf("objname %q", objname)
+
+               err := bucket.Del(objname)
+               if trial.path == "/" {
+                       c.Check(err, check.NotNil)
+                       continue
+               }
+               c.Check(err, check.IsNil, comment)
+               _, err = bucket.GetReader(objname)
+               c.Check(err, check.NotNil, comment)
+       }
+}
+
 func (s *IntegrationSuite) TestS3CollectionPutObjectFailure(c *check.C) {
        stage := s.s3setup(c)
        defer stage.teardown(c)
@@ -220,6 +360,16 @@ func (s *IntegrationSuite) TestS3ProjectPutObjectFailure(c *check.C) {
        s.testS3PutObjectFailure(c, stage.projbucket, stage.coll.Name+"/")
 }
 func (s *IntegrationSuite) testS3PutObjectFailure(c *check.C, bucket *s3.Bucket, prefix string) {
+       s.testServer.Config.cluster.Collections.S3FolderObjects = false
+
+       // Can't use V4 signature for these tests, because
+       // double-slash is incorrectly cleaned by the aws.V4Signature,
+       // resulting in a "bad signature" error. (Cleaning the path is
+       // appropriate for other services, but not in S3 where object
+       // names "foo//bar" and "foo/bar" are semantically different.)
+       bucket.S3.Auth = *(aws.NewAuth(arvadostest.ActiveToken, "none", "", time.Now().Add(time.Hour)))
+       bucket.S3.Signature = aws.V2Signature
+
        var wg sync.WaitGroup
        for _, trial := range []struct {
                path string
@@ -260,13 +410,15 @@ func (s *IntegrationSuite) testS3PutObjectFailure(c *check.C, bucket *s3.Bucket,
                        rand.Read(buf)
 
                        err := bucket.PutReader(objname, bytes.NewReader(buf), int64(len(buf)), "application/octet-stream", s3.Private, s3.Options{})
-                       if !c.Check(err, check.ErrorMatches, `400 Bad.*`, check.Commentf("PUT %q should fail", objname)) {
+                       if !c.Check(err, check.ErrorMatches, `(invalid object name.*|open ".*" failed.*|object name conflicts with existing object|Missing object name in PUT request.)`, check.Commentf("PUT %q should fail", objname)) {
                                return
                        }
 
                        if objname != "" && objname != "/" {
                                _, err = bucket.GetReader(objname)
-                               c.Check(err, check.ErrorMatches, `404 Not Found`, check.Commentf("GET %q should return 404", objname))
+                               c.Check(err.(*s3.Error).StatusCode, check.Equals, 404)
+                               c.Check(err.(*s3.Error).Code, check.Equals, `NoSuchKey`)
+                               c.Check(err, check.ErrorMatches, `The specified key does not exist.`, check.Commentf("GET %q should return 404", objname))
                        }
                }()
        }
@@ -293,27 +445,92 @@ func (s *IntegrationSuite) TestS3GetBucketVersioning(c *check.C) {
        defer stage.teardown(c)
        for _, bucket := range []*s3.Bucket{stage.collbucket, stage.projbucket} {
                req, err := http.NewRequest("GET", bucket.URL("/"), nil)
+               c.Check(err, check.IsNil)
                req.Header.Set("Authorization", "AWS "+arvadostest.ActiveTokenV2+":none")
                req.URL.RawQuery = "versioning"
                resp, err := http.DefaultClient.Do(req)
                c.Assert(err, check.IsNil)
+               c.Check(resp.Header.Get("Content-Type"), check.Equals, "application/xml")
+               buf, err := ioutil.ReadAll(resp.Body)
+               c.Assert(err, check.IsNil)
+               c.Check(string(buf), check.Equals, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<VersioningConfiguration xmlns=\"http://s3.amazonaws.com/doc/2006-03-01/\"/>\n")
+       }
+}
+
+// If there are no CommonPrefixes entries, the CommonPrefixes XML tag
+// should not appear at all.
+func (s *IntegrationSuite) TestS3ListNoCommonPrefixes(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+
+       req, err := http.NewRequest("GET", stage.collbucket.URL("/"), nil)
+       c.Assert(err, check.IsNil)
+       req.Header.Set("Authorization", "AWS "+arvadostest.ActiveTokenV2+":none")
+       req.URL.RawQuery = "prefix=asdfasdfasdf&delimiter=/"
+       resp, err := http.DefaultClient.Do(req)
+       c.Assert(err, check.IsNil)
+       buf, err := ioutil.ReadAll(resp.Body)
+       c.Assert(err, check.IsNil)
+       c.Check(string(buf), check.Not(check.Matches), `(?ms).*CommonPrefixes.*`)
+}
+
+// If there is no delimiter in the request, or the results are not
+// truncated, the NextMarker XML tag should not appear in the response
+// body.
+func (s *IntegrationSuite) TestS3ListNoNextMarker(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+
+       for _, query := range []string{"prefix=e&delimiter=/", ""} {
+               req, err := http.NewRequest("GET", stage.collbucket.URL("/"), nil)
+               c.Assert(err, check.IsNil)
+               req.Header.Set("Authorization", "AWS "+arvadostest.ActiveTokenV2+":none")
+               req.URL.RawQuery = query
+               resp, err := http.DefaultClient.Do(req)
+               c.Assert(err, check.IsNil)
                buf, err := ioutil.ReadAll(resp.Body)
                c.Assert(err, check.IsNil)
-               c.Check(strings.TrimSpace(string(buf)), check.Equals, `<VersioningConfiguration xmlns="http://s3.amazonaws.com/doc/2006-03-01/"/>`)
+               c.Check(string(buf), check.Not(check.Matches), `(?ms).*NextMarker.*`)
        }
 }
 
+// List response should include KeyCount field.
+func (s *IntegrationSuite) TestS3ListKeyCount(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+
+       req, err := http.NewRequest("GET", stage.collbucket.URL("/"), nil)
+       c.Assert(err, check.IsNil)
+       req.Header.Set("Authorization", "AWS "+arvadostest.ActiveTokenV2+":none")
+       req.URL.RawQuery = "prefix=&delimiter=/"
+       resp, err := http.DefaultClient.Do(req)
+       c.Assert(err, check.IsNil)
+       buf, err := ioutil.ReadAll(resp.Body)
+       c.Assert(err, check.IsNil)
+       c.Check(string(buf), check.Matches, `(?ms).*<KeyCount>2</KeyCount>.*`)
+}
+
 func (s *IntegrationSuite) TestS3CollectionList(c *check.C) {
        stage := s.s3setup(c)
        defer stage.teardown(c)
 
-       filesPerDir := 1001
-       stage.writeBigDirs(c, 2, filesPerDir)
-       s.testS3List(c, stage.collbucket, "", 4000, 2+filesPerDir*2)
-       s.testS3List(c, stage.collbucket, "", 131, 2+filesPerDir*2)
-       s.testS3List(c, stage.collbucket, "dir0/", 71, filesPerDir)
+       var markers int
+       for markers, s.testServer.Config.cluster.Collections.S3FolderObjects = range []bool{false, true} {
+               dirs := 2
+               filesPerDir := 1001
+               stage.writeBigDirs(c, dirs, filesPerDir)
+               // Total # objects is:
+               //                 2 file entries from s3setup (emptyfile and sailboat.txt)
+               //                +1 fake "directory" marker from s3setup (emptydir) (if enabled)
+               //             +dirs fake "directory" marker from writeBigDirs (dir0/, dir1/) (if enabled)
+               // +filesPerDir*dirs file entries from writeBigDirs (dir0/file0.txt, etc.)
+               s.testS3List(c, stage.collbucket, "", 4000, markers+2+(filesPerDir+markers)*dirs)
+               s.testS3List(c, stage.collbucket, "", 131, markers+2+(filesPerDir+markers)*dirs)
+               s.testS3List(c, stage.collbucket, "dir0/", 71, filesPerDir+markers)
+       }
 }
 func (s *IntegrationSuite) testS3List(c *check.C, bucket *s3.Bucket, prefix string, pageSize, expectFiles int) {
+       c.Logf("testS3List: prefix=%q pageSize=%d S3FolderObjects=%v", prefix, pageSize, s.testServer.Config.cluster.Collections.S3FolderObjects)
        expectPageSize := pageSize
        if expectPageSize > 1000 {
                expectPageSize = 1000
@@ -332,6 +549,9 @@ func (s *IntegrationSuite) testS3List(c *check.C, bucket *s3.Bucket, prefix stri
                }
                for _, key := range resp.Contents {
                        gotKeys[key.Key] = key
+                       if strings.Contains(key.Key, "sailboat.txt") {
+                               c.Check(key.Size, check.Equals, int64(4))
+                       }
                }
                if !resp.IsTruncated {
                        c.Check(resp.NextMarker, check.Equals, "")
@@ -346,6 +566,12 @@ func (s *IntegrationSuite) testS3List(c *check.C, bucket *s3.Bucket, prefix stri
 }
 
 func (s *IntegrationSuite) TestS3CollectionListRollup(c *check.C) {
+       for _, s.testServer.Config.cluster.Collections.S3FolderObjects = range []bool{false, true} {
+               s.testS3CollectionListRollup(c)
+       }
+}
+
+func (s *IntegrationSuite) testS3CollectionListRollup(c *check.C) {
        stage := s.s3setup(c)
        defer stage.teardown(c)
 
@@ -368,17 +594,40 @@ func (s *IntegrationSuite) TestS3CollectionListRollup(c *check.C) {
                        break
                }
        }
-       c.Check(allfiles, check.HasLen, dirs*filesPerDir+3)
+       markers := 0
+       if s.testServer.Config.cluster.Collections.S3FolderObjects {
+               markers = 1
+       }
+       c.Check(allfiles, check.HasLen, dirs*(filesPerDir+markers)+3+markers)
+
+       gotDirMarker := map[string]bool{}
+       for _, name := range allfiles {
+               isDirMarker := strings.HasSuffix(name, "/")
+               if markers == 0 {
+                       c.Check(isDirMarker, check.Equals, false, check.Commentf("name %q", name))
+               } else if isDirMarker {
+                       gotDirMarker[name] = true
+               } else if i := strings.LastIndex(name, "/"); i >= 0 {
+                       c.Check(gotDirMarker[name[:i+1]], check.Equals, true, check.Commentf("name %q", name))
+                       gotDirMarker[name[:i+1]] = true // skip redundant complaints about this dir marker
+               }
+       }
 
        for _, trial := range []struct {
                prefix    string
                delimiter string
                marker    string
        }{
+               {"", "", ""},
                {"di", "/", ""},
                {"di", "r", ""},
                {"di", "n", ""},
                {"dir0", "/", ""},
+               {"dir0/", "/", ""},
+               {"dir0/f", "/", ""},
+               {"dir0", "", ""},
+               {"dir0/", "", ""},
+               {"dir0/f", "", ""},
                {"dir0", "/", "dir0/file14.txt"},       // no commonprefixes
                {"", "", "dir0/file14.txt"},            // middle page, skip walking dir1
                {"", "", "dir1/file14.txt"},            // middle page, skip walking dir0
@@ -389,7 +638,7 @@ func (s *IntegrationSuite) TestS3CollectionListRollup(c *check.C) {
                {"dir2", "/", ""},                      // prefix "dir2" does not exist
                {"", "/", ""},
        } {
-               c.Logf("\n\n=== trial %+v", trial)
+               c.Logf("\n\n=== trial %+v markers=%d", trial, markers)
 
                maxKeys := 20
                resp, err := stage.collbucket.List(trial.prefix, trial.delimiter, trial.marker, maxKeys)
@@ -441,10 +690,39 @@ func (s *IntegrationSuite) TestS3CollectionListRollup(c *check.C) {
                for _, prefix := range resp.CommonPrefixes {
                        gotPrefixes = append(gotPrefixes, prefix)
                }
-               c.Check(gotKeys, check.DeepEquals, expectKeys)
-               c.Check(gotPrefixes, check.DeepEquals, expectPrefixes)
-               c.Check(resp.NextMarker, check.Equals, expectNextMarker)
-               c.Check(resp.IsTruncated, check.Equals, expectTruncated)
+               commentf := check.Commentf("trial %+v markers=%d", trial, markers)
+               c.Check(gotKeys, check.DeepEquals, expectKeys, commentf)
+               c.Check(gotPrefixes, check.DeepEquals, expectPrefixes, commentf)
+               c.Check(resp.NextMarker, check.Equals, expectNextMarker, commentf)
+               c.Check(resp.IsTruncated, check.Equals, expectTruncated, commentf)
                c.Logf("=== trial %+v keys %q prefixes %q nextMarker %q", trial, gotKeys, gotPrefixes, resp.NextMarker)
        }
 }
+
+// TestS3cmd checks compatibility with the s3cmd command line tool, if
+// it's installed. As of Debian buster, s3cmd is only in backports, so
+// `arvados-server install` don't install it, and this test skips if
+// it's not installed.
+func (s *IntegrationSuite) TestS3cmd(c *check.C) {
+       if _, err := exec.LookPath("s3cmd"); err != nil {
+               c.Skip("s3cmd not found")
+               return
+       }
+
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+
+       cmd := exec.Command("s3cmd", "--no-ssl", "--host="+s.testServer.Addr, "--host-bucket="+s.testServer.Addr, "--access_key="+arvadostest.ActiveTokenUUID, "--secret_key="+arvadostest.ActiveToken, "ls", "s3://"+arvadostest.FooCollection)
+       buf, err := cmd.CombinedOutput()
+       c.Check(err, check.IsNil)
+       c.Check(string(buf), check.Matches, `.* 3 +s3://`+arvadostest.FooCollection+`/foo\n`)
+}
+
+func (s *IntegrationSuite) TestS3BucketInHost(c *check.C) {
+       stage := s.s3setup(c)
+       defer stage.teardown(c)
+
+       hdr, body, _ := s.runCurl(c, "AWS "+arvadostest.ActiveTokenV2+":none", stage.coll.UUID+".collections.example.com", "/sailboat.txt")
+       c.Check(hdr, check.Matches, `(?s)HTTP/1.1 200 OK\r\n.*`)
+       c.Check(body, check.Equals, "⛵\n")
+}