Use EXPECT_EQ() when comparing strings in TestWebKitAPI tests

[Daniel Bates]

We should use EXPECT_EQ() when comparing WTF::String objects so that we get pretty-printed difference output for both the expected result and actual results. This can help expedite the diagnosis of a regression.

== Current Behavior ==

Suppose we change line <http://trac.webkit.org/browser/trunk/Tools/TestWebKitAPI/Tests/WTF/WTFString.cpp?rev=216131#L337> to purposely cause an failure:

EXPECT_TRUE(reference.left(1) == String::fromUTF8("Ca"));

Then run-api-tests will emit the following output:

Tools/TestWebKitAPI/Tests/WTF/WTFString.cpp:337
Value of: reference.left(1) == String::fromUTF8("Ca")
  Actual: false
Expected: true

== Proposed Behavior ==

Suppose we change the same line to purposely failure and use EXPECT_EQ():

EXPECT_EQ(String::fromUTF8("Ca"), reference.left(1));

Then run-api-tests will emit the following output:

Tools/TestWebKitAPI/Tests/WTF/WTFString.cpp:337
Value of: reference.left(1)
  Actual: C
Expected: String::fromUTF8("Ca")
Which is: Ca

[Daniel Bates]

(In reply to Daniel Bates from comment #0)
> Suppose we change line
> <http://trac.webkit.org/browser/trunk/Tools/TestWebKitAPI/Tests/WTF/
> WTFString.cpp?rev=216131#L337> to purposely cause an failure:

The line should be <http://trac.webkit.org/browser/trunk/Tools/TestWebKitAPI/Tests/WTF/WTFString.cpp?rev=216131#L336>

[Daniel Bates]

Created attachment 309111 [details]
Patch

[Daniel Bates]

Committed r216255: <http://trac.webkit.org/changeset/216255>