Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame^] | 1 | // Copyright 2011 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "api.h" |
| 31 | #include "debug.h" |
| 32 | #include "execution.h" |
| 33 | #include "factory.h" |
| 34 | #include "macro-assembler.h" |
| 35 | #include "objects.h" |
| 36 | #include "global-handles.h" |
| 37 | #include "cctest.h" |
| 38 | |
| 39 | using namespace v8::internal; |
| 40 | |
| 41 | TEST(ObjectHashTable) { |
| 42 | v8::HandleScope scope; |
| 43 | LocalContext context; |
| 44 | Handle<ObjectHashTable> table = FACTORY->NewObjectHashTable(23); |
| 45 | Handle<JSObject> a = FACTORY->NewJSArray(7); |
| 46 | Handle<JSObject> b = FACTORY->NewJSArray(11); |
| 47 | table = PutIntoObjectHashTable(table, a, b); |
| 48 | CHECK_EQ(table->NumberOfElements(), 1); |
| 49 | CHECK_EQ(table->Lookup(*a), *b); |
| 50 | CHECK_EQ(table->Lookup(*b), HEAP->undefined_value()); |
| 51 | |
| 52 | // Keys still have to be valid after objects were moved. |
| 53 | HEAP->CollectGarbage(NEW_SPACE); |
| 54 | CHECK_EQ(table->NumberOfElements(), 1); |
| 55 | CHECK_EQ(table->Lookup(*a), *b); |
| 56 | CHECK_EQ(table->Lookup(*b), HEAP->undefined_value()); |
| 57 | |
| 58 | // Keys that are overwritten should not change number of elements. |
| 59 | table = PutIntoObjectHashTable(table, a, FACTORY->NewJSArray(13)); |
| 60 | CHECK_EQ(table->NumberOfElements(), 1); |
| 61 | CHECK_NE(table->Lookup(*a), *b); |
| 62 | |
| 63 | // Keys mapped to undefined should be removed permanently. |
| 64 | table = PutIntoObjectHashTable(table, a, FACTORY->undefined_value()); |
| 65 | CHECK_EQ(table->NumberOfElements(), 0); |
| 66 | CHECK_EQ(table->NumberOfDeletedElements(), 1); |
| 67 | CHECK_EQ(table->Lookup(*a), HEAP->undefined_value()); |
| 68 | |
| 69 | // Keys should map back to their respective values. |
| 70 | for (int i = 0; i < 100; i++) { |
| 71 | Handle<JSObject> key = FACTORY->NewJSArray(7); |
| 72 | Handle<JSObject> value = FACTORY->NewJSArray(11); |
| 73 | table = PutIntoObjectHashTable(table, key, value); |
| 74 | CHECK_EQ(table->NumberOfElements(), i + 1); |
| 75 | CHECK_NE(table->FindEntry(*key), ObjectHashTable::kNotFound); |
| 76 | CHECK_EQ(table->Lookup(*key), *value); |
| 77 | } |
| 78 | |
| 79 | // Keys never added to the map should not be found. |
| 80 | for (int i = 0; i < 1000; i++) { |
| 81 | Handle<JSObject> o = FACTORY->NewJSArray(100); |
| 82 | CHECK_EQ(table->FindEntry(*o), ObjectHashTable::kNotFound); |
| 83 | CHECK_EQ(table->Lookup(*o), HEAP->undefined_value()); |
| 84 | } |
| 85 | } |