/
matcher_test.go
185 lines (176 loc) · 4.8 KB
/
matcher_test.go
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/*
*
* Copyright 2020 gRPC authors.
*
* 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 xdsrouting
import (
"context"
"testing"
"google.golang.org/grpc/balancer"
"google.golang.org/grpc/internal/grpcrand"
"google.golang.org/grpc/internal/grpcutil"
"google.golang.org/grpc/metadata"
)
func TestAndMatcherMatch(t *testing.T) {
tests := []struct {
name string
pm pathMatcherInterface
hm headerMatcherInterface
info balancer.PickInfo
want bool
}{
{
name: "both match",
pm: newPathExactMatcher("/a/b", false),
hm: newHeaderExactMatcher("th", "tv"),
info: balancer.PickInfo{
FullMethodName: "/a/b",
Ctx: metadata.NewOutgoingContext(context.Background(), metadata.Pairs("th", "tv")),
},
want: true,
},
{
name: "both match with path case insensitive",
pm: newPathExactMatcher("/A/B", true),
hm: newHeaderExactMatcher("th", "tv"),
info: balancer.PickInfo{
FullMethodName: "/a/b",
Ctx: metadata.NewOutgoingContext(context.Background(), metadata.Pairs("th", "tv")),
},
want: true,
},
{
name: "only one match",
pm: newPathExactMatcher("/a/b", false),
hm: newHeaderExactMatcher("th", "tv"),
info: balancer.PickInfo{
FullMethodName: "/z/y",
Ctx: metadata.NewOutgoingContext(context.Background(), metadata.Pairs("th", "tv")),
},
want: false,
},
{
name: "both not match",
pm: newPathExactMatcher("/z/y", false),
hm: newHeaderExactMatcher("th", "abc"),
info: balancer.PickInfo{
FullMethodName: "/a/b",
Ctx: metadata.NewOutgoingContext(context.Background(), metadata.Pairs("th", "tv")),
},
want: false,
},
{
name: "fake header",
pm: newPathPrefixMatcher("/", false),
hm: newHeaderExactMatcher("content-type", "fake"),
info: balancer.PickInfo{
FullMethodName: "/a/b",
Ctx: grpcutil.WithExtraMetadata(context.Background(), metadata.Pairs(
"content-type", "fake",
)),
},
want: true,
},
{
name: "binary header",
pm: newPathPrefixMatcher("/", false),
hm: newHeaderPresentMatcher("t-bin", true),
info: balancer.PickInfo{
FullMethodName: "/a/b",
Ctx: grpcutil.WithExtraMetadata(
metadata.NewOutgoingContext(context.Background(), metadata.Pairs("t-bin", "123")), metadata.Pairs(
"content-type", "fake",
)),
},
// Shouldn't match binary header, even though it's in metadata.
want: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
a := newCompositeMatcher(tt.pm, []headerMatcherInterface{tt.hm}, nil)
if got := a.match(tt.info); got != tt.want {
t.Errorf("match() = %v, want %v", got, tt.want)
}
})
}
}
func TestFractionMatcherMatch(t *testing.T) {
const fraction = 500000
fm := newFractionMatcher(fraction)
defer func() {
grpcrandInt63n = grpcrand.Int63n
}()
// rand > fraction, should return false.
grpcrandInt63n = func(n int64) int64 {
return fraction + 1
}
if matched := fm.match(); matched {
t.Errorf("match() = %v, want not match", matched)
}
// rand == fraction, should return true.
grpcrandInt63n = func(n int64) int64 {
return fraction
}
if matched := fm.match(); !matched {
t.Errorf("match() = %v, want match", matched)
}
// rand < fraction, should return true.
grpcrandInt63n = func(n int64) int64 {
return fraction - 1
}
if matched := fm.match(); !matched {
t.Errorf("match() = %v, want match", matched)
}
}
func TestCompositeMatcherEqual(t *testing.T) {
tests := []struct {
name string
pm pathMatcherInterface
hms []headerMatcherInterface
fm *fractionMatcher
mm *compositeMatcher
want bool
}{
{
name: "equal",
pm: newPathExactMatcher("/a/b", false),
mm: newCompositeMatcher(newPathExactMatcher("/a/b", false), nil, nil),
want: true,
},
{
name: "no path matcher",
pm: nil,
mm: newCompositeMatcher(nil, nil, nil),
want: true,
},
{
name: "not equal",
pm: newPathExactMatcher("/a/b", false),
fm: newFractionMatcher(123),
mm: newCompositeMatcher(newPathExactMatcher("/a/b", false), nil, nil),
want: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
a := newCompositeMatcher(tt.pm, tt.hms, tt.fm)
if got := a.equal(tt.mm); got != tt.want {
t.Errorf("equal() = %v, want %v", got, tt.want)
}
})
}
}