go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/grpc/prpc/metadata_test.go (about)

     1  // Copyright 2016 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 prpc
    16  
    17  import (
    18  	"encoding/base64"
    19  	"net/http"
    20  	"testing"
    21  
    22  	"google.golang.org/grpc/metadata"
    23  
    24  	. "github.com/smartystreets/goconvey/convey"
    25  	. "go.chromium.org/luci/common/testing/assertions"
    26  )
    27  
    28  func TestBinaryHeader(t *testing.T) {
    29  	t.Parallel()
    30  
    31  	Convey("from headers", t, func() {
    32  		Convey("regular", func() {
    33  			md, err := headersIntoMetadata(http.Header{
    34  				"Key":         {"v1", "v2"},
    35  				"Another-Key": {"v3"},
    36  			})
    37  			So(err, ShouldBeNil)
    38  			So(md, ShouldResemble, metadata.MD{
    39  				"key":         {"v1", "v2"},
    40  				"another-key": {"v3"},
    41  			})
    42  		})
    43  
    44  		Convey("binary", func() {
    45  			data := []byte{10}
    46  			md, err := headersIntoMetadata(http.Header{
    47  				"Key-Bin": {base64.StdEncoding.EncodeToString(data)},
    48  			})
    49  			So(err, ShouldBeNil)
    50  			So(md, ShouldResemble, metadata.MD{
    51  				"key-bin": {string(data)},
    52  			})
    53  		})
    54  
    55  		Convey("binary invalid", func() {
    56  			_, err := headersIntoMetadata(http.Header{
    57  				"Key-Bin": {"Z"},
    58  			})
    59  			So(err, ShouldErrLike, "illegal base64 data at input byte 0")
    60  		})
    61  
    62  		Convey("reserved", func() {
    63  			md, err := headersIntoMetadata(http.Header{
    64  				"Content-Type": {"zzz"},
    65  				"X-Prpc-Zzz":   {"zzz"},
    66  			})
    67  			So(err, ShouldBeNil)
    68  			So(md, ShouldResemble, metadata.MD(nil))
    69  		})
    70  	})
    71  
    72  	Convey("to headers", t, func() {
    73  		Convey("regular", func() {
    74  			h := http.Header{}
    75  			err := metaIntoHeaders(metadata.MD{
    76  				"key":         {"v1", "v2"},
    77  				"another-key": {"v3"},
    78  			}, h)
    79  			So(err, ShouldBeNil)
    80  			So(h, ShouldResemble, http.Header{
    81  				"Key":         {"v1", "v2"},
    82  				"Another-Key": {"v3"},
    83  			})
    84  		})
    85  
    86  		Convey("binary", func() {
    87  			data := []byte{10}
    88  			h := http.Header{}
    89  			err := metaIntoHeaders(metadata.MD{
    90  				"key-bin": {string(data)},
    91  			}, h)
    92  			So(err, ShouldBeNil)
    93  			So(h, ShouldResemble, http.Header{
    94  				"Key-Bin": {base64.StdEncoding.EncodeToString(data)},
    95  			})
    96  		})
    97  
    98  		Convey("reserved", func() {
    99  			h := http.Header{}
   100  			err := metaIntoHeaders(metadata.MD{
   101  				"content-type": {"zzz"},
   102  			}, h)
   103  			So(err, ShouldErrLike, "using reserved metadata key")
   104  		})
   105  	})
   106  }