1 files changed, 487 insertions, 0 deletions
diff --git a/deps/v8/test/debugger/debug/es6/debug-blockscopes.js b/deps/v8/test/debugger/debug/es6/debug-blockscopes.js
new file mode 100644
index 0000000000..001c098c69
--- /dev/null
+++ b/deps/v8/test/debugger/debug/es6/debug-blockscopes.js
@@ -0,0 +1,487 @@
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+//       notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+//       copyright notice, this list of conditions and the following
+//       disclaimer in the documentation and/or other materials provided
+//       with the distribution.
+//     * Neither the name of Google Inc. nor the names of its
+//       contributors may be used to endorse or promote products derived
+//       from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --noanalyze-environment-liveness
+// The functions used for testing backtraces. They are at the top to make the
+// testing of source line/column easier.
+
+"use strict";
+
+var Debug = debug.Debug;
+
+var test_name;
+var listener_delegate;
+var listener_called;
+var exception;
+var begin_test_count = 0;
+var end_test_count = 0;
+var break_count = 0;
+var global_marker = 7;
+
+
+// Debug event listener which delegates.
+function listener(event, exec_state, event_data, data) {
+  try {
+    if (event == Debug.DebugEvent.Break) {
+      break_count++;
+      listener_called = true;
+      listener_delegate(exec_state);
+    }
+  } catch (e) {
+    print(e, e.stack);
+    exception = e;
+  }
+}
+
+// Add the debug event listener.
+Debug.setListener(listener);
+
+
+// Initialize for a new test.
+function BeginTest(name) {
+  test_name = name;
+  listener_delegate = null;
+  listener_called = false;
+  exception = null;
+  begin_test_count++;
+}
+
+
+// Check result of a test.
+function EndTest() {
+  assertTrue(listener_called, "listener not called for " + test_name);
+  assertNull(exception, test_name, exception);
+  end_test_count++;
+}
+
+var global_object = this;
+
+// Check that the scope chain contains the expected types of scopes.
+function CheckScopeChain(scopes, exec_state) {
+  assertEquals(scopes.length, exec_state.frame().scopeCount());
+  for (var i = 0; i < scopes.length; i++) {
+    var scope = exec_state.frame().scope(i);
+    assertEquals(scopes[i], scope.scopeType());
+
+    // Check the global object when hitting the global scope.
+    if (scopes[i] == debug.ScopeType.Global) {
+      // Objects don't have same class (one is "global", other is "Object",
+      // so just check the properties directly.
+      assertEquals(global_object.global_marker,
+                   scope.scopeObject().value().global_marker);
+    }
+  }
+}
+
+// Check that the content of the scope is as expected. For functions just check
+// that there is a function.
+function CheckScopeContent(content, number, exec_state) {
+  var scope = exec_state.frame().scope(number);
+  var count = 0;
+  for (var p in content) {
+    var property_mirror = scope.scopeObject().property(p);
+    if (property_mirror.isUndefined()) {
+      print('property ' + p + ' not found in scope');
+    }
+    assertFalse(property_mirror.isUndefined(),
+                'property ' + p + ' not found in scope');
+    assertEquals(content[p], property_mirror.value().value(),
+                 'property ' + p + ' has unexpected value');
+    count++;
+  }
+
+  // 'arguments' and might be exposed in the local and closure scope. Just
+  // ignore this.
+  var scope_size = scope.scopeObject().properties().length;
+  if (!scope.scopeObject().property('arguments').isUndefined()) {
+    scope_size--;
+  }
+  // Temporary variables introduced by the parser have not been materialized.
+  assertTrue(scope.scopeObject().property('').isUndefined());
+
+  if (count != scope_size) {
+    print('Names found in scope:');
+    var names = scope.scopeObject().propertyNames();
+    for (var i = 0; i < names.length; i++) {
+      print(names[i]);
+    }
+  }
+  assertEquals(count, scope_size);
+}
+
+
+function assertEqualsUnlessOptimized(expected, value, f) {
+  try {
+    assertEquals(expected, value);
+  } catch (e) {
+    assertOptimized(f);
+  }
+}
+
+// Simple empty block scope in local scope.
+BeginTest("Local block 1");
+
+function local_block_1() {
+  {
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({}, 0, exec_state);
+};
+local_block_1();
+EndTest();
+
+
+// Simple empty block scope in local scope with a parameter.
+BeginTest("Local 2");
+
+function local_2(a) {
+  {
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({a:1}, 0, exec_state);
+};
+local_2(1);
+EndTest();
+
+
+// Local scope with a parameter and a local variable.
+BeginTest("Local 3");
+
+function local_3(a) {
+  let x = 3;
+  debugger;
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({a:1,x:3}, 0, exec_state);
+};
+local_3(1);
+EndTest();
+
+
+// Local scope with parameters and local variables.
+BeginTest("Local 4");
+
+function local_4(a, b) {
+  let x = 3;
+  let y = 4;
+  debugger;
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({a:1,b:2,x:3,y:4}, 0, exec_state);
+};
+local_4(1, 2);
+EndTest();
+
+
+// Single variable in a block scope.
+BeginTest("Local 5");
+
+function local_5(a) {
+  {
+    let x = 5;
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:5}, 0, exec_state);
+  CheckScopeContent({a:1}, 1, exec_state);
+};
+local_5(1);
+EndTest();
+
+
+// Two variables in a block scope.
+BeginTest("Local 6");
+
+function local_6(a) {
+  {
+    let x = 6;
+    let y = 7;
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:6,y:7}, 0, exec_state);
+  CheckScopeContent({a:1}, 1, exec_state);
+};
+local_6(1);
+EndTest();
+
+
+// Two variables in a block scope.
+BeginTest("Local 7");
+
+function local_7(a) {
+  {
+    {
+      let x = 8;
+      debugger;
+    }
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:8}, 0, exec_state);
+  CheckScopeContent({a:1}, 1, exec_state);
+};
+local_7(1);
+EndTest();
+
+
+// Simple closure formed by returning an inner function referering to an outer
+// block local variable and an outer function's parameter.
+BeginTest("Closure 1");
+
+function closure_1(a) {
+  var x = 2;
+  let y = 3;
+  if (true) {
+    let z = 4;
+    function f() {
+      debugger;
+      return a + x + y + z;
+    };
+    return f;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Local,
+                   debug.ScopeType.Block,
+                   debug.ScopeType.Closure,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({}, 0, exec_state);
+  CheckScopeContent({a:1,x:2,y:3}, 2, exec_state);
+};
+closure_1(1)();
+EndTest();
+
+
+// Simple for-in loop over the keys of an object.
+BeginTest("For loop 1");
+
+function for_loop_1() {
+  for (let x in {y:undefined}) {
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:'y'}, 0, exec_state);
+  // The function scope contains a temporary iteration variable, but it is
+  // hidden to the debugger.
+};
+for_loop_1();
+EndTest();
+
+
+// For-in loop over the keys of an object with a block scoped let variable
+// shadowing the iteration variable.
+BeginTest("For loop 2");
+
+function for_loop_2() {
+  for (let x in {y:undefined}) {
+    let x = 3;
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:3}, 0, exec_state);
+  CheckScopeContent({x:'y'}, 1, exec_state);
+  // The function scope contains a temporary iteration variable, hidden to the
+  // debugger.
+};
+for_loop_2();
+EndTest();
+
+
+// Simple for loop.
+BeginTest("For loop 3");
+
+function for_loop_3() {
+  for (let x = 3; x < 4; ++x) {
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:3}, 0, exec_state);
+  CheckScopeContent({}, 1, exec_state);
+};
+for_loop_3();
+EndTest();
+
+
+// For loop with a block scoped let variable shadowing the iteration variable.
+BeginTest("For loop 4");
+
+function for_loop_4() {
+  for (let x = 3; x < 4; ++x) {
+    let x = 5;
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:5}, 0, exec_state);
+  CheckScopeContent({x:3}, 1, exec_state);
+  CheckScopeContent({}, 2, exec_state);
+};
+for_loop_4();
+EndTest();
+
+
+// For loop with two variable declarations.
+BeginTest("For loop 5");
+
+function for_loop_5() {
+  for (let x = 3, y = 5; x < 4; ++x) {
+    debugger;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:3,y:5}, 0, exec_state);
+  CheckScopeContent({}, 1, exec_state);
+};
+for_loop_5();
+EndTest();
+
+
+// Uninitialized variables
+BeginTest("Uninitialized 1");
+
+function uninitialized_1() {
+  {
+    debugger;
+    let x = 1;
+  }
+}
+
+listener_delegate = function(exec_state) {
+  CheckScopeChain([debug.ScopeType.Block,
+                   debug.ScopeType.Local,
+                   debug.ScopeType.Script,
+                   debug.ScopeType.Global], exec_state);
+  CheckScopeContent({x:undefined}, 0, exec_state);
+};
+uninitialized_1();
+EndTest();
+
+
+// Block scopes shadowing
+BeginTest("Block scopes shadowing 1");
+function shadowing_1() {
+  let i = 0;
+  {
+    let i = 5;
+    debugger;
+  }
+  assertEquals(0, i);
+}
+
+listener_delegate = function (exec_state) {
+  assertEqualsUnlessOptimized(5, exec_state.frame(0).evaluate("i").value());
+}
+shadowing_1();
+EndTest();
+
+
+// Block scopes shadowing
+BeginTest("Block scopes shadowing 2");
+function shadowing_2() {
+  let i = 0;
+  {
+    let j = 5;
+    debugger;
+  }
+}
+
+listener_delegate = function (exec_state) {
+  assertEqualsUnlessOptimized(0, exec_state.frame(0).evaluate("i").value());
+  assertEqualsUnlessOptimized(5, exec_state.frame(0).evaluate("j").value());
+}
+shadowing_2();
+EndTest();