[issue21655] Write Unit Test for Vec2 class in the Turtle Module

[Lita Cho]

Lita Cho added the comment:

Here are the tests for Vec2D. I have also included the tests for TNavigator here as well as they are all going into the same test module.

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Added file: http://bugs.python.org/file35557/test_turtle_textonly.py

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<http://bugs.python.org/issue21655>
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