Google Testing CopyCode

[TheInterface1]

I'm writing a Google test for an implementation of a Map class but I can't get the output I'm looking for out of it.

TEST(MapTest, eraseOfExistingKeyReturnsTrueAndDecrementsSize)
{
    Map testMap;
    testMap.insert( "one", "un" );
    testMap.insert( "two", "deux" );
    EXPECT_EQ( testMap.size() , 2 );
    EXPECT_EQ( testMap.erase( "two" ), true );
    EXPECT_EQ( testMap.size() , 1 );
    EXPECT_EQ( testMap.erase( "one" ), true );
    EXPECT_EQ( testMap.size() , 0 );
}

This isn't catching all errors. how can I make it more throughout?

[Thomas1965]

So far you have tested the insert and erase functions.
You also should test the constructors and find functions.
What output do you expect ?