[inspector] expose V8InspectorSession::breakProgram in test harness.

V8InspectorSession::schedulePauseOnNextStatement and V8InspectorSession::cancelPauseOnNextStatement are now exposed in inspector tests. These methods are required at least for better blackboxing tests.

BUG=v8:5842
R=dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2636613002
Cr-Commit-Position: refs/heads/master@{#42469}

test/inspector/debugger/inspector-break-api-expected.txt

+Checks breakProgram,(schedule|cancel)PauseOnNextStatement test API
+
+Running test: testBreakProgram
+Stack:
+callBreakProgram (:9:2)
+(anonymous) (:0:0)
+Other data:
+{
+    method : Debugger.paused
+    params : {
+        data : {
+            a : 42
+        }
+        hitBreakpoints : [
+        ]
+        reason : reason
+    }
+}
+
+
+Running test: testSchedulePauseOnNextStatement
+Stack:
+(anonymous) (expr1.js:0:0)
+Other data:
+{
+    method : Debugger.paused
+    params : {
+        data : {
+            a : 42
+        }
+        hitBreakpoints : [
+        ]
+        reason : reason
+    }
+}
+
+
+Running test: testCancelPauseOnNextStatement

test/inspector/debugger/inspector-break-api.js

+// Copyright 2017 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+print("Checks breakProgram,(schedule|cancel)PauseOnNextStatement test API");
+
+InspectorTest.addScript(`
+function callBreakProgram() {
+  breakProgram('reason', JSON.stringify({a: 42}));
+}
+
+function foo() {
+  return 42;
+}`, 7, 26);
+
+InspectorTest.setupScriptMap();
+Protocol.Debugger.onPaused(message => {
+  InspectorTest.log('Stack:');
+  InspectorTest.logCallFrames(message.params.callFrames);
+  delete message.params.callFrames;
+  InspectorTest.log('Other data:');
+  InspectorTest.logMessage(message);
+  InspectorTest.log('');
+  Protocol.Debugger.resume();
+});
+
+Protocol.Debugger.enable();
+
+InspectorTest.runTestSuite([
+  function testBreakProgram(next) {
+    Protocol.Runtime.evaluate({ expression: 'callBreakProgram()'})
+      .then(next);
+  },
+
+  function testSchedulePauseOnNextStatement(next) {
+    schedulePauseOnNextStatement('reason', JSON.stringify({a: 42}));
+    Protocol.Runtime.evaluate({ expression: 'foo()//# sourceURL=expr1.js'})
+      .then(() => Protocol.Runtime.evaluate({
+        expression: 'foo()//# sourceURL=expr2.js'}))
+      .then(next);
+  },
+
+  function testCancelPauseOnNextStatement(next) {
+    schedulePauseOnNextStatement('reason', JSON.stringify({a: 42}));
+    cancelPauseOnNextStatement();
+    Protocol.Runtime.evaluate({ expression: 'foo()'})
+      .then(next);
+  }
+]);

test/inspector/inspector-impl.h

@@ -27,9 +27,13 @@ class InspectorClientImpl : public v8_inspector::V8InspectorClient {
 
   static v8_inspector::V8Inspector* InspectorFromContext(
       v8::Local<v8::Context> context);
+  static v8_inspector::V8InspectorSession* SessionFromContext(
+      v8::Local<v8::Context> context);
 
   void setCurrentTimeMSForTest(double time);
 
+  v8_inspector::V8InspectorSession* session() const { return session_.get(); }
+
  private:
   // V8InspectorClient implementation.
   v8::Local<v8::Context> ensureDefaultContextInGroup(
@@ -38,9 +42,6 @@ class InspectorClientImpl : public v8_inspector::V8InspectorClient {
   void runMessageLoopOnPause(int context_group_id) override;
   void quitMessageLoopOnPause() override;
 
-  static v8_inspector::V8InspectorSession* SessionFromContext(
-      v8::Local<v8::Context> context);
-
   friend class SendMessageToBackendTask;
 
   friend class ConnectTask;

test/inspector/inspector-test.cc

@@ -55,7 +55,9 @@ class UtilsExtension : public v8::Extension {
                       "native function setlocale();"
                       "native function load();"
                       "native function compileAndRunWithOrigin();"
-                      "native function setCurrentTimeMSForTest();") {}
+                      "native function setCurrentTimeMSForTest();"
+                      "native function schedulePauseOnNextStatement();"
+                      "native function cancelPauseOnNextStatement();") {}
   virtual v8::Local<v8::FunctionTemplate> GetNativeFunctionTemplate(
       v8::Isolate* isolate, v8::Local<v8::String> name) {
     v8::Local<v8::Context> context = isolate->GetCurrentContext();
@@ -96,6 +98,21 @@ class UtilsExtension : public v8::Extension {
                    .FromJust()) {
       return v8::FunctionTemplate::New(isolate,
                                        UtilsExtension::SetCurrentTimeMSForTest);
+    } else if (name->Equals(context,
+                            v8::String::NewFromUtf8(
+                                isolate, "schedulePauseOnNextStatement",
+                                v8::NewStringType::kNormal)
+                                .ToLocalChecked())
+                   .FromJust()) {
+      return v8::FunctionTemplate::New(
+          isolate, UtilsExtension::SchedulePauseOnNextStatement);
+    } else if (name->Equals(context, v8::String::NewFromUtf8(
+                                         isolate, "cancelPauseOnNextStatement",
+                                         v8::NewStringType::kNormal)
+                                         .ToLocalChecked())
+                   .FromJust()) {
+      return v8::FunctionTemplate::New(
+          isolate, UtilsExtension::CancelPauseOnNextStatement);
     }
     return v8::Local<v8::FunctionTemplate>();
   }
@@ -203,6 +220,31 @@ class UtilsExtension : public v8::Extension {
     inspector_client_->setCurrentTimeMSForTest(
         args[0].As<v8::Number>()->Value());
   }
+
+  static void SchedulePauseOnNextStatement(
+      const v8::FunctionCallbackInfo<v8::Value>& args) {
+    if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsString()) {
+      fprintf(
+          stderr,
+          "Internal error: schedulePauseOnNextStatement('reason', 'details').");
+      Exit();
+    }
+    v8::internal::Vector<uint16_t> reason = ToVector(args[0].As<v8::String>());
+    v8_inspector::StringView reason_view(reason.start(), reason.length());
+    v8::internal::Vector<uint16_t> details = ToVector(args[1].As<v8::String>());
+    v8_inspector::StringView details_view(details.start(), details.length());
+    inspector_client_->session()->schedulePauseOnNextStatement(reason_view,
+                                                               details_view);
+  }
+
+  static void CancelPauseOnNextStatement(
+      const v8::FunctionCallbackInfo<v8::Value>& args) {
+    if (args.Length() != 0) {
+      fprintf(stderr, "Internal error: cancelPauseOnNextStatement().");
+      Exit();
+    }
+    inspector_client_->session()->cancelPauseOnNextStatement();
+  }
 };
 
 TaskRunner* UtilsExtension::backend_runner_ = nullptr;
@@ -283,7 +325,8 @@ class InspectorExtension : public v8::Extension {
       : v8::Extension("v8_inspector/inspector",
                       "native function attachInspector();"
                       "native function detachInspector();"
-                      "native function setMaxAsyncTaskStacks();") {}
+                      "native function setMaxAsyncTaskStacks();"
+                      "native function breakProgram();") {}
 
   virtual v8::Local<v8::FunctionTemplate> GetNativeFunctionTemplate(
       v8::Isolate* isolate, v8::Local<v8::String> name) {
@@ -307,6 +350,13 @@ class InspectorExtension : public v8::Extension {
                    .FromJust()) {
       return v8::FunctionTemplate::New(
           isolate, InspectorExtension::SetMaxAsyncTaskStacks);
+    } else if (name->Equals(context,
+                            v8::String::NewFromUtf8(isolate, "breakProgram",
+                                                    v8::NewStringType::kNormal)
+                                .ToLocalChecked())
+                   .FromJust()) {
+      return v8::FunctionTemplate::New(isolate,
+                                       InspectorExtension::BreakProgram);
     }
     return v8::Local<v8::FunctionTemplate>();
   }
@@ -350,6 +400,23 @@ class InspectorExtension : public v8::Extension {
     v8_inspector::SetMaxAsyncTaskStacksForTest(
         inspector, args[0].As<v8::Int32>()->Value());
   }
+
+  static void BreakProgram(const v8::FunctionCallbackInfo<v8::Value>& args) {
+    if (args.Length() != 2 || !args[0]->IsString() || !args[1]->IsString()) {
+      fprintf(stderr, "Internal error: breakProgram('reason', 'details').");
+      Exit();
+    }
+    v8_inspector::V8InspectorSession* session =
+        InspectorClientImpl::SessionFromContext(
+            args.GetIsolate()->GetCurrentContext());
+    CHECK(session);
+
+    v8::internal::Vector<uint16_t> reason = ToVector(args[0].As<v8::String>());
+    v8_inspector::StringView reason_view(reason.start(), reason.length());
+    v8::internal::Vector<uint16_t> details = ToVector(args[1].As<v8::String>());
+    v8_inspector::StringView details_view(details.start(), details.length());
+    session->breakProgram(reason_view, details_view);
+  }
 };
 
 v8::Local<v8::String> ToString(v8::Isolate* isolate,