mirror of https://github.com/grpc/grpc-go.git
201 lines
11 KiB
Go
201 lines
11 KiB
Go
/*
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*
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* Copyright 2021 gRPC authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package grpc
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import (
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"context"
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"errors"
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"net"
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"net/url"
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"google.golang.org/grpc/resolver"
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)
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func (s) TestParsedTarget_Success_WithoutCustomDialer(t *testing.T) {
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defScheme := resolver.GetDefaultScheme()
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tests := []struct {
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target string
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wantParsed resolver.Target
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}{
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// No scheme is specified.
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{target: "", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "", URL: url.URL{Scheme: defScheme, Path: "/"}}},
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{target: "://", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://", URL: url.URL{Scheme: defScheme, Path: "/://"}}},
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{target: ":///", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ":///", URL: url.URL{Scheme: defScheme, Path: "/:///"}}},
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{target: "://a/", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://a/", URL: url.URL{Scheme: defScheme, Path: "/://a/"}}},
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{target: ":///a", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ":///a", URL: url.URL{Scheme: defScheme, Path: "/:///a"}}},
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{target: "://a/b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://a/b", URL: url.URL{Scheme: defScheme, Path: "/://a/b"}}},
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{target: "/", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "/", URL: url.URL{Scheme: defScheme, Path: "//"}}},
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{target: "a/b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a/b", URL: url.URL{Scheme: defScheme, Path: "/a/b"}}},
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{target: "a//b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a//b", URL: url.URL{Scheme: defScheme, Path: "/a//b"}}},
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{target: "google.com", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "google.com", URL: url.URL{Scheme: defScheme, Path: "/google.com"}}},
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{target: "google.com/?a=b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "google.com/", URL: url.URL{Scheme: defScheme, Path: "/google.com/", RawQuery: "a=b"}}},
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{target: "/unix/socket/address", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "/unix/socket/address", URL: url.URL{Scheme: defScheme, Path: "//unix/socket/address"}}},
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// An unregistered scheme is specified.
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{target: "a:///", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:///", URL: url.URL{Scheme: defScheme, Path: "/a:///"}}},
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{target: "a://b/", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a://b/", URL: url.URL{Scheme: defScheme, Path: "/a://b/"}}},
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{target: "a:///b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:///b", URL: url.URL{Scheme: defScheme, Path: "/a:///b"}}},
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{target: "a://b/c", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a://b/c", URL: url.URL{Scheme: defScheme, Path: "/a://b/c"}}},
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{target: "a:b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:b", URL: url.URL{Scheme: defScheme, Path: "/a:b"}}},
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{target: "a:/b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a:/b", URL: url.URL{Scheme: defScheme, Path: "/a:/b"}}},
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{target: "a://b", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "a://b", URL: url.URL{Scheme: defScheme, Path: "/a://b"}}},
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// A registered scheme is specified.
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{target: "dns:///google.com", wantParsed: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "google.com", URL: url.URL{Scheme: "dns", Path: "/google.com"}}},
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{target: "dns://a.server.com/google.com", wantParsed: resolver.Target{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com", URL: url.URL{Scheme: "dns", Host: "a.server.com", Path: "/google.com"}}},
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{target: "dns://a.server.com/google.com/?a=b", wantParsed: resolver.Target{Scheme: "dns", Authority: "a.server.com", Endpoint: "google.com/", URL: url.URL{Scheme: "dns", Host: "a.server.com", Path: "/google.com/", RawQuery: "a=b"}}},
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{target: "unix:///a/b/c", wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "unix", Path: "/a/b/c"}}},
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{target: "unix-abstract:a/b/c", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "unix-abstract", Path: "", Opaque: "a/b/c"}}},
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{target: "unix-abstract:a b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a b", URL: url.URL{Scheme: "unix-abstract", Path: "", Opaque: "a b"}}},
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{target: "unix-abstract:a:b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a:b", URL: url.URL{Scheme: "unix-abstract", Path: "", Opaque: "a:b"}}},
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{target: "unix-abstract:a-b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a-b", URL: url.URL{Scheme: "unix-abstract", Path: "", Opaque: "a-b"}}},
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{target: "unix-abstract:/ a///://::!@#$%25^&*()b", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: " a///://::!@", URL: url.URL{Scheme: "unix-abstract", Path: "/ a///://::!@", RawPath: "/ a///://::!@", Fragment: "$%^&*()b", RawFragment: "$%25^&*()b"}}},
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{target: "unix-abstract:passthrough:abc", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "passthrough:abc", URL: url.URL{Scheme: "unix-abstract", Path: "", Opaque: "passthrough:abc"}}},
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{target: "unix-abstract:unix:///abc", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "unix:///abc", URL: url.URL{Scheme: "unix-abstract", Path: "", Opaque: "unix:///abc"}}},
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{target: "unix-abstract:///a/b/c", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "unix-abstract", Path: "/a/b/c"}}},
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{target: "unix-abstract:///", wantParsed: resolver.Target{Scheme: "unix-abstract", Authority: "", Endpoint: "", URL: url.URL{Scheme: "unix-abstract", Path: "/"}}},
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{target: "passthrough:///unix:///a/b/c", wantParsed: resolver.Target{Scheme: "passthrough", Authority: "", Endpoint: "unix:///a/b/c", URL: url.URL{Scheme: "passthrough", Path: "/unix:///a/b/c"}}},
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// Cases for `scheme:absolute-path`.
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{target: "dns:/a/b/c", wantParsed: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "dns", Path: "/a/b/c"}}},
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{target: "unregistered:/a/b/c", wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "unregistered:/a/b/c", URL: url.URL{Scheme: defScheme, Path: "/unregistered:/a/b/c"}}},
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}
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for _, test := range tests {
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t.Run(test.target, func(t *testing.T) {
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cc, err := Dial(test.target, WithInsecure())
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if err != nil {
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t.Fatalf("Dial(%q) failed: %v", test.target, err)
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}
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defer cc.Close()
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if !cmp.Equal(cc.parsedTarget, test.wantParsed) {
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t.Errorf("cc.parsedTarget for dial target %q = %+v, want %+v", test.target, cc.parsedTarget, test.wantParsed)
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}
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})
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}
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}
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func (s) TestParsedTarget_Failure_WithoutCustomDialer(t *testing.T) {
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targets := []string{
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"unix://a/b/c",
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"unix://authority",
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"unix-abstract://authority/a/b/c",
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"unix-abstract://authority",
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}
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for _, target := range targets {
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t.Run(target, func(t *testing.T) {
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if cc, err := Dial(target, WithInsecure()); err == nil {
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defer cc.Close()
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t.Fatalf("Dial(%q) succeeded cc.parsedTarget = %+v, expected to fail", target, cc.parsedTarget)
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}
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})
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}
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}
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func (s) TestParsedTarget_WithCustomDialer(t *testing.T) {
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defScheme := resolver.GetDefaultScheme()
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tests := []struct {
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target string
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wantParsed resolver.Target
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wantDialerAddress string
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}{
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// unix:[local_path], unix:[/absolute], and unix://[/absolute] have
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// different behaviors with a custom dialer.
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{
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target: "unix:a/b/c",
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wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "unix", Opaque: "a/b/c"}},
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wantDialerAddress: "unix:a/b/c",
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},
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{
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target: "unix:/a/b/c",
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wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "unix", Path: "/a/b/c"}},
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wantDialerAddress: "unix:///a/b/c",
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},
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{
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target: "unix:///a/b/c",
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wantParsed: resolver.Target{Scheme: "unix", Authority: "", Endpoint: "a/b/c", URL: url.URL{Scheme: "unix", Path: "/a/b/c"}},
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wantDialerAddress: "unix:///a/b/c",
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},
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{
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target: "dns:///127.0.0.1:50051",
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wantParsed: resolver.Target{Scheme: "dns", Authority: "", Endpoint: "127.0.0.1:50051", URL: url.URL{Scheme: "dns", Path: "/127.0.0.1:50051"}},
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wantDialerAddress: "127.0.0.1:50051",
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},
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{
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target: ":///127.0.0.1:50051",
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: ":///127.0.0.1:50051", URL: url.URL{Scheme: defScheme, Path: "/:///127.0.0.1:50051"}},
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wantDialerAddress: ":///127.0.0.1:50051",
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},
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{
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target: "dns://authority/127.0.0.1:50051",
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wantParsed: resolver.Target{Scheme: "dns", Authority: "authority", Endpoint: "127.0.0.1:50051", URL: url.URL{Scheme: "dns", Host: "authority", Path: "/127.0.0.1:50051"}},
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wantDialerAddress: "127.0.0.1:50051",
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},
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{
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target: "://authority/127.0.0.1:50051",
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "://authority/127.0.0.1:50051", URL: url.URL{Scheme: defScheme, Path: "/://authority/127.0.0.1:50051"}},
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wantDialerAddress: "://authority/127.0.0.1:50051",
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},
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{
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target: "/unix/socket/address",
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wantParsed: resolver.Target{Scheme: defScheme, Authority: "", Endpoint: "/unix/socket/address", URL: url.URL{Scheme: defScheme, Path: "//unix/socket/address"}},
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wantDialerAddress: "/unix/socket/address",
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},
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{
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target: "passthrough://a.server.com/google.com",
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wantParsed: resolver.Target{Scheme: "passthrough", Authority: "a.server.com", Endpoint: "google.com", URL: url.URL{Scheme: "passthrough", Host: "a.server.com", Path: "/google.com"}},
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wantDialerAddress: "google.com",
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},
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}
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for _, test := range tests {
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t.Run(test.target, func(t *testing.T) {
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addrCh := make(chan string, 1)
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dialer := func(ctx context.Context, address string) (net.Conn, error) {
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addrCh <- address
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return nil, errors.New("dialer error")
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}
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cc, err := Dial(test.target, WithInsecure(), WithContextDialer(dialer))
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if err != nil {
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t.Fatalf("Dial(%q) failed: %v", test.target, err)
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}
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defer cc.Close()
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select {
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case addr := <-addrCh:
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if addr != test.wantDialerAddress {
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t.Fatalf("address in custom dialer is %q, want %q", addr, test.wantDialerAddress)
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}
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case <-time.After(time.Second):
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t.Fatal("timeout when waiting for custom dialer to be invoked")
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}
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if !cmp.Equal(cc.parsedTarget, test.wantParsed) {
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t.Errorf("cc.parsedTarget for dial target %q = %+v, want %+v", test.target, cc.parsedTarget, test.wantParsed)
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}
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})
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}
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}
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