TestUnit cheatsheet

gistfile1.txt

assert(boolean,[msg])
  Ensures that the object/expression is true.

assert_block([msg]) { block }
  Most basic assertion

assert_equal(obj1, obj2, [msg])
  Ensures that obj1 == obj2 is true.

assert_in_delta(expecting, actual, delta, [msg])
  Ensures that the numbers expecting and actual are within delta of each other.

assert_instance_of(class, obj, [msg])
  Ensures that obj is of the class type.

assert_kind_of(class, obj, [msg])
  Ensures that obj is or descends from class.

assert_match(regexp, string, [msg])
  Ensures that a string matches the regular expression.

assert_nil(obj, [msg])
  Ensures that obj.nil? is true.

assert_no_match(regexp, string, [msg])
  Ensures that a string doesn’t matches the regular expression.

assert_not_equal(obj1, obj2, [msg])
  Ensures that obj1 == obj2 is false.

assert_not_nil(obj, [msg])
  Ensures that obj.nil? is false.

assert_not_same((obj1, obj2, [msg])
  Ensures that obj1.equal?(obj2) is false.

assert_nothing_raised(exception1, ...) { block }
  Ensures that the given block doesn’t raise one of the given exceptions.

assert_nothing_thrown([msg]) { block }
  Passes if block does not throw anything

assert_operator(obj1, operator, obj2, [msg])
  Ensures that obj1.operator(obj2) is true.

assert_raise(except1, except2, ...)  { block }
  Ensures that the given block raises one of the given exceptions.

assert_respond_to(obj, symbol, [msg])
  Ensures that obj has a method called symbol.

assert_same(obj1, obj2, [msg])
  Ensures that obj1.equal?(obj2) is true.

assert_send(array, [msg])
  Ensures that executing the method listed in array[1] on the object in
  array[0] with the parameters of array[2 and up] is true. This one is weird eh?

assert_throws(symbol, [msg]) { block }
  Ensures that the given block throws the symbol.

flunk([msg])
  Ensures failure. This is useful to explicitly mark a test that isn’t
  finished yet.