cheat sheets.

### test

def flunk(msg=nil)
def pass(msg=nil)
def skip(msg=nil, bt=caller)

assert(test, msg=nil)
assert_block(msg=nil)
assert_empty(obj, msg=nil)
assert_equal(exp, act, msg=nil)
assert_in_delta(exp, act, delta=0.001, msg=nil)
assert_in_epsilon(a, b, epsilon=0.001, msg=nil)
assert_includes(collection, obj, msg=nil)
assert_instance_of(klass, obj, msg=nil)
assert_kind_of(klass, obj, msg=nil)
assert_match(exp, act, msg=nil)
assert_nil(obj, msg=nil)
assert_operator(o1, op, o2, msg=nil)
assert_raises(*exp)
assert_respond_to(obj, meth, msg=nil)
assert_same(exp, act, msg=nil)
assert_send(send_ary, msg=nil)
assert_throws(sym, msg=nil)

refute(test, msg=nil)
refute_empty(obj, msg=nil)
refute_equal(exp, act, msg=nil)
refute_in_delta(exp, act, delta=0.001, msg=nil)
refute_in_epsilon(a, b, epsilon=0.001, msg=nil)
refute_includes(collection, obj, msg=nil)
refute_instance_of(klass, obj, msg=nil)
refute_kind_of(klass, obj, msg=nil)
refute_match(exp, act, msg=nil)
refute_nil(obj, msg=nil)
refute_operator(o1, op, o2, msg=nil)
refute_respond_to(obj, meth, msg=nil)
refute_same(exp, act, msg=nil)

### spec

must_be_close_to
must_be_empty
must_be_instance_of
must_be_kind_of
must_be_nil
must_be_same_as
must_be_within_delta
must_be_within_epsilon
must_equal
must_include
must_match
must_raise
must_respond_to
must_send
must_throw

wont_be_close_to
wont_be_empty
wont_be_instance_of
wont_be_kind_of
wont_be_nil
wont_be_same_as
wont_be_within_delta
wont_be_within_epsilon
wont_equal
wont_include
wont_match
wont_raise
wont_respond_to
wont_send
wont_throw

### mock

expect(name, retval, args=[])
verify