Question

我正在使用Google Test和Google Mock作为我的C ++ / Qt应用程序。我一直在这个设置上取得了很大的成功，直到我刚试过这个：

QList<AbstractSurface::VertexRow> rowList;
for (unsigned i = 0; i < rows; ++i)
{
    AbstractSurface::VertexRow curRow(new AbstractSurface::Vertex[cols]);
    for (unsigned j = 0; j < cols; ++j)
    {
        curRow[j] = AbstractSurface::Vertex();
    }
    rowList.append(curRow);
}
ON_CALL(surface, numRows_impl()).WillByDefault(Return(rows));
ON_CALL(surface, numColumns_impl()).WillByDefault(Return(cols));
ON_CALL(surface, popAllRows_impl()).WillOnce(Return(rowList));
/* ... */

尝试编译此结果会导致来自gcc的以下错误消息：

../../3DWaveSurface/test/TestWaterfallPresenter.cc: In member function ‘virtual void<unnamed>::WaterfallPresenterTest_CallingPaintGLCallsPaintRowForEachRowInSurface_Test::TestBody()’:
../../3DWaveSurface/test/TestWaterfallPresenter.cc:140:41: error: ‘class testing::internal::OnCallSpec<QList<boost::shared_array<AbstractSurface::Vertex> >()>’ has no member named ‘WillOnce’

如果有帮助，VertexRow typedef为boost::shared_array<Vertex>而Vertex为struct，且有效空构造函数。

这是我为测试所写的内容中的错误，还是与使用QList或shared_array不兼容？

解遵循VJo的建议后，我的测试编译并运行但随后崩溃了：

Stack trace:
: Failure
Uninteresting mock function call - returning default value.
    Function call: popAllRows_impl()
    The mock function has no default action set, and its return type has no default value set.
The process "/home/corey/development/3DWaveSurface-build-desktop-debug/test/test" crashed.

因为popAllRows_impl()没有默认回报。我添加了一个默认值：

ON_CALL(surface, popAllRows_impl()).WillByDefault(Return(QList<AbstractSurface::VertexRow>()));

到我的SetUp()，一切都很好。正如VJo指出的那样，ON_CALL没有WillOnce（），但EXPECT_CALL有{{1}}，我在烹饪书中错过了这个...

Answer 1

最简单的解决方案是：

EXPECT_CALL(surface, popAllRows_impl()).WillOnce(Return(rowList));

编辑：

ON_CALL有WillByDefault，但没有WillOnce方法。查看gmock cookbook

尝试指定返回值时，Google Mock会出现编译错误

1 个答案: