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      1 // Copyright 2013 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 "mojo/public/bindings/lib/array.h"
      6 #include "mojo/public/tests/simple_bindings_support.h"
      7 #include "testing/gtest/include/gtest/gtest.h"
      8 
      9 namespace mojo {
     10 namespace test {
     11 
     12 // Tests that basic Array operations work.
     13 TEST(BindingsArrayTest, Basic) {
     14   SimpleBindingsSupport bindings_support;
     15 
     16   // 8 bytes for the array, with 8 bytes left over for elements.
     17   internal::FixedBuffer buf(8 + 8*sizeof(char));
     18   EXPECT_EQ(16u, buf.size());
     19 
     20   Array<char>::Builder builder(8);
     21   EXPECT_EQ(8u, builder.size());
     22   for (size_t i = 0; i < builder.size(); ++i) {
     23     char val = static_cast<char>(i*2);
     24     builder[i] = val;
     25     EXPECT_EQ(val, builder.at(i));
     26   }
     27   Array<char> array = builder.Finish();
     28   for (size_t i = 0; i < array.size(); ++i) {
     29     char val = static_cast<char>(i) * 2;
     30     EXPECT_EQ(val, array[i]);
     31   }
     32 }
     33 
     34 // Tests that basic Array<bool> operations work, and that it's packed into 1
     35 // bit per element.
     36 TEST(BindingsArrayTest, Bool) {
     37   SimpleBindingsSupport bindings_support;
     38 
     39   // 8 bytes for the array header, with 8 bytes left over for elements.
     40   internal::FixedBuffer buf(8 + 3);
     41   EXPECT_EQ(16u, buf.size());
     42 
     43   // An array of 64 bools can fit into 8 bytes.
     44   Array<bool>::Builder builder(64);
     45   EXPECT_EQ(64u, builder.size());
     46   for (size_t i = 0; i < builder.size(); ++i) {
     47     bool val = i % 3 == 0;
     48     builder[i] = val;
     49     EXPECT_EQ(val, builder.at(i));
     50   }
     51   Array<bool> array = builder.Finish();
     52   for (size_t i = 0; i < array.size(); ++i) {
     53     bool val = i % 3 == 0;
     54     EXPECT_EQ(val, array[i]);
     55   }
     56 }
     57 
     58 // Tests that Array<Handle> supports transferring handles.
     59 TEST(BindingsArrayTest, Handle) {
     60   SimpleBindingsSupport bindings_support;
     61 
     62   AllocationScope scope;
     63 
     64   ScopedMessagePipeHandle pipe0, pipe1;
     65   CreateMessagePipe(&pipe0, &pipe1);
     66 
     67   Array<MessagePipeHandle>::Builder handles_builder(2);
     68   handles_builder[0] = pipe0.Pass();
     69   handles_builder[1].reset(pipe1.release());
     70 
     71   EXPECT_FALSE(pipe0.is_valid());
     72   EXPECT_FALSE(pipe1.is_valid());
     73 
     74   Array<MessagePipeHandle> handles = handles_builder.Finish();
     75   EXPECT_TRUE(handles[0].is_valid());
     76   EXPECT_TRUE(handles[1].is_valid());
     77 
     78   pipe0 = handles[0].Pass();
     79   EXPECT_TRUE(pipe0.is_valid());
     80   EXPECT_FALSE(handles[0].is_valid());
     81 }
     82 
     83 }  // namespace test
     84 }  // namespace mojo
     85