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// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package storage
import (
"context"
"net/http"
"testing"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/googleapis/gax-go/v2/callctx"
)
func TestSetHeadersFromContext(t *testing.T) {
t.Parallel()
ctx := context.Background()
xGoogKey := "X-Goog-Api-Client"
for _, test := range []struct {
desc string
originalHeaders http.Header
headersOnCtx []string // keyval pairs
wantHeaders http.Header
}{
{
desc: "all empty values",
},
{
desc: "regular headers",
originalHeaders: http.Header{
"Headerkey-A": {"value1", "value2"},
"Headerkey-B": {"v1", "v2"},
},
headersOnCtx: []string{"key-c", "val1", "headerkey-a", "value3"},
wantHeaders: http.Header{
"Headerkey-A": {"value3"},
"Headerkey-B": {"v1", "v2"},
"Key-C": {"val1"},
},
},
{
desc: "x-goog-api-client merging",
originalHeaders: http.Header{
"Headerkey-A": {"value1", "value2"},
},
headersOnCtx: []string{"key-c", "val1", xGoogKey, "k1/v1 k2/v2", xGoogKey, "k3/v3"},
wantHeaders: http.Header{
"Headerkey-A": {"value1", "value2"},
"Key-C": {"val1"},
xGoogKey: {"k1/v1 k2/v2 k3/v3"},
},
},
{
desc: "x-goog-api-client merging with values already set",
originalHeaders: http.Header{
"Headerkey-A": {"value1", "value2"},
xGoogKey: {"k4/v4 k5/v5"},
},
headersOnCtx: []string{"key-c", "val1", xGoogKey, "k1/v1 k2/v2", xGoogKey, "k3/v3"},
wantHeaders: http.Header{
"Headerkey-A": {"value1", "value2"},
"Key-C": {"val1"},
xGoogKey: {"k1/v1 k2/v2 k3/v3 k4/v4 k5/v5"},
},
},
} {
t.Run(test.desc, func(t *testing.T) {
ctx := callctx.SetHeaders(ctx, test.headersOnCtx...)
got := test.originalHeaders.Clone()
setHeadersFromCtx(ctx, got)
if len(got) != len(test.wantHeaders) {
t.Errorf("Headers not set correctly: got: %+v, want: %+v\n", got, test.wantHeaders)
}
for k, wantVals := range test.wantHeaders {
if diff := cmp.Diff(got[k], wantVals, cmpopts.SortSlices(func(a, b string) bool { return len(a) < len(b) })); diff != "" {
t.Errorf("Header %q not set correctly: got(-),want(+):\n%s", k, diff)
}
}
})
}
}
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