testing lambda functions: block beta testing 08/17 about pythonwhat HOT 4 CLOSED

Testing the definition is not possible ATM but I think you can test the functionality of a lambda function using test_expression_result().

E.g.

test_expression_result(expr_code="echo_word('ECHO!!', 5)")

This will compare the result of expr_code in the student and solution environment (and since these environments contain the defined lambda expression, it tests whether they return the same).

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@vincentvankrunkelsven thanks for sharing this.
@hugobowne The workaround that Vincent mentions indeed allows you to indirectly test a lambda functions, but it's not ideal.

I'll try to look into a decent way of providing support for lambda functions by start of week next week (August 8).

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@hugobowne a function test_lambda_function() that looks very much like test_function_definition() has been added; it'll be on staging soon.
Wiki article will be added here

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Will go live tomorrow

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