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Side by Side Diff: content/shell/browser/layout_test/devtools_protocol_test_bindings.cc

Issue 2942573003: [DevTools] New harness for inspector-protocol layout tests (Closed)
Patch Set: Protocol -> dp Created 3 years, 6 months ago
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1 // Copyright 2017 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "content/shell/browser/layout_test/devtools_protocol_test_bindings.h"
6
7 #include "base/json/json_reader.h"
8 #include "base/json/string_escape.h"
9 #include "base/strings/string_number_conversions.h"
10 #include "base/strings/utf_string_conversions.h"
11 #include "base/values.h"
12 #include "content/public/browser/devtools_agent_host.h"
13 #include "content/public/browser/navigation_handle.h"
14 #include "content/public/browser/render_frame_host.h"
15 #include "content/public/browser/web_contents.h"
16
17 #if !defined(OS_ANDROID)
18 #include "content/public/browser/devtools_frontend_host.h"
19 #endif
20
21 namespace content {
22
23 namespace {
24 // This constant should be in sync with
25 // the constant at devtools_ui_bindings.cc.
26 const size_t kMaxMessageChunkSize = IPC::Channel::kMaximumMessageSize / 4;
27 } // namespace
28
29 DevToolsProtocolTestBindings::DevToolsProtocolTestBindings(
30 WebContents* devtools)
31 : WebContentsObserver(devtools),
32 agent_host_(DevToolsAgentHost::CreateForDiscovery()) {
33 agent_host_->AttachClient(this);
34 }
35
36 DevToolsProtocolTestBindings::~DevToolsProtocolTestBindings() {
37 if (agent_host_) {
38 agent_host_->DetachClient(this);
39 agent_host_ = nullptr;
40 }
41 }
42
43 // static
44 GURL DevToolsProtocolTestBindings::GetProtocolTestURL(const GURL& test_url) {
45 std::string spec = test_url.spec();
46 std::string dir = "/inspector-protocol/";
47 size_t pos = spec.find(dir);
48 if (pos == std::string::npos)
49 return GURL();
50 if (spec.rfind(".js") != spec.length() - 3)
51 return GURL();
52 spec = spec.substr(0, pos + dir.length()) +
53 "resources/inspector-protocol-test.html?" + spec;
54 return GURL(spec);
55 }
56
57 void DevToolsProtocolTestBindings::ReadyToCommitNavigation(
58 NavigationHandle* navigation_handle) {
59 #if !defined(OS_ANDROID)
60 content::RenderFrameHost* frame = navigation_handle->GetRenderFrameHost();
61 if (frame->GetParent())
62 return;
63 frontend_host_.reset(DevToolsFrontendHost::Create(
64 frame, base::Bind(&DevToolsProtocolTestBindings::HandleMessageFromTest,
65 base::Unretained(this))));
66 #endif
67 }
68
69 void DevToolsProtocolTestBindings::WebContentsDestroyed() {
70 if (agent_host_) {
71 agent_host_->DetachClient(this);
72 agent_host_ = nullptr;
73 }
74 }
75
76 void DevToolsProtocolTestBindings::HandleMessageFromTest(
77 const std::string& message) {
78 std::string method;
79 base::ListValue* params = nullptr;
80 base::DictionaryValue* dict = nullptr;
81 std::unique_ptr<base::Value> parsed_message = base::JSONReader::Read(message);
82 if (!parsed_message || !parsed_message->GetAsDictionary(&dict) ||
83 !dict->GetString("method", &method)) {
84 return;
85 }
86
87 int request_id = 0;
88 dict->GetInteger("id", &request_id);
89 dict->GetList("params", &params);
90
91 if (method == "dispatchProtocolMessage" && params && params->GetSize() == 1) {
92 std::string protocol_message;
93 if (!params->GetString(0, &protocol_message))
94 return;
95 if (agent_host_)
96 agent_host_->DispatchProtocolMessage(this, protocol_message);
97 return;
98 }
99 }
100
101 void DevToolsProtocolTestBindings::DispatchProtocolMessage(
102 DevToolsAgentHost* agent_host,
103 const std::string& message) {
104 if (message.length() < kMaxMessageChunkSize) {
105 std::string param;
106 base::EscapeJSONString(message, true, &param);
107 std::string code = "DevToolsAPI.dispatchMessage(" + param + ");";
108 base::string16 javascript = base::UTF8ToUTF16(code);
109 web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(javascript);
110 return;
111 }
112
113 size_t total_size = message.length();
114 for (size_t pos = 0; pos < message.length(); pos += kMaxMessageChunkSize) {
115 std::string param;
116 base::EscapeJSONString(message.substr(pos, kMaxMessageChunkSize), true,
117 &param);
118 std::string code = "DevToolsAPI.dispatchMessageChunk(" + param + "," +
119 std::to_string(pos ? 0 : total_size) + ");";
120 base::string16 javascript = base::UTF8ToUTF16(code);
121 web_contents()->GetMainFrame()->ExecuteJavaScriptForTests(javascript);
122 }
123 }
124
125 void DevToolsProtocolTestBindings::AgentHostClosed(
126 DevToolsAgentHost* agent_host,
127 bool replaced) {
128 agent_host_ = nullptr;
129 }
130
131 } // namespace content
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