test_assertions.rb [plain text]
require 'test/unit'
module Test
module Unit
class TC_Assertions < TestCase
def check(value, message="")
add_assertion
if (!value)
raise AssertionFailedError.new(message)
end
end
def check_assertions(expect_fail, expected_message="", return_value_expected=false)
@actual_assertion_count = 0
failed = true
actual_message = nil
@catch_assertions = true
return_value = nil
begin
return_value = yield
failed = false
rescue AssertionFailedError => error
actual_message = error.message
end
@catch_assertions = false
check(expect_fail == failed, (expect_fail ? "Should have failed, but didn't" : "Should not have failed, but did with message\n<#{actual_message}>"))
check(1 == @actual_assertion_count, "Should have made one assertion but made <#{@actual_assertion_count}>")
if (expect_fail)
case expected_message
when String
check(actual_message == expected_message, "Should have the correct message.\n<#{expected_message.inspect}> expected but was\n<#{actual_message.inspect}>")
when Regexp
check(actual_message =~ expected_message, "The message should match correctly.\n</#{expected_message.source}/> expected to match\n<#{actual_message.inspect}>")
else
check(false, "Incorrect expected message type in assert_nothing_failed")
end
else
if (!return_value_expected)
check(return_value.nil?, "Should not return a value but returned <#{return_value}>")
else
check(!return_value.nil?, "Should return a value")
end
end
return return_value
end
def check_nothing_fails(return_value_expected=false, &proc)
check_assertions(false, "", return_value_expected, &proc)
end
def check_fails(expected_message="", &proc)
check_assertions(true, expected_message, &proc)
end
def test_assert_block
check_nothing_fails {
assert_block {true}
}
check_nothing_fails {
assert_block("successful assert_block") {true}
}
check_nothing_fails {
assert_block("successful assert_block") {true}
}
check_fails("assert_block failed.") {
assert_block {false}
}
check_fails("failed assert_block") {
assert_block("failed assert_block") {false}
}
end
def test_assert
check_nothing_fails{assert("a")}
check_nothing_fails{assert(true)}
check_nothing_fails{assert(true, "successful assert")}
check_fails("<nil> is not true."){assert(nil)}
check_fails("<false> is not true."){assert(false)}
check_fails("failed assert.\n<false> is not true."){assert(false, "failed assert")}
end
def test_assert_equal
check_nothing_fails {
assert_equal("string1", "string1")
}
check_nothing_fails {
assert_equal( "string1", "string1", "successful assert_equal")
}
check_nothing_fails {
assert_equal("string1", "string1", "successful assert_equal")
}
check_fails(%Q{<"string1"> expected but was\n<"string2">.}) {
assert_equal("string1", "string2")
}
check_fails(%Q{failed assert_equal.\n<"string1"> expected but was\n<"string2">.}) {
assert_equal("string1", "string2", "failed assert_equal")
}
check_fails(%Q{<"1"> expected but was\n<1>.}) do
assert_equal("1", 1)
end
end
def test_assert_raise
return_value = nil
check_nothing_fails(true) {
return_value = assert_raise(RuntimeError) {
raise "Error"
}
}
check(return_value.kind_of?(Exception), "Should have returned the exception from a successful assert_raise")
check(return_value.message == "Error", "Should have returned the correct exception from a successful assert_raise")
check_nothing_fails(true) {
assert_raise(ArgumentError, "successful assert_raise") {
raise ArgumentError.new("Error")
}
}
check_nothing_fails(true) {
assert_raise(RuntimeError) {
raise "Error"
}
}
check_nothing_fails(true) {
assert_raise(RuntimeError, "successful assert_raise") {
raise "Error"
}
}
check_fails("<RuntimeError> exception expected but none was thrown.") {
assert_raise(RuntimeError) {
1 + 1
}
}
check_fails(%r{\Afailed assert_raise.\n<ArgumentError> exception expected but was\nClass: <RuntimeError>\nMessage: <"Error">\n---Backtrace---\n.+\n---------------\Z}m) {
assert_raise(ArgumentError, "failed assert_raise") {
raise "Error"
}
}
check_fails("Should expect a class of exception, Object.\n<false> is not true.") {
assert_nothing_raised(Object) {
1 + 1
}
}
exceptions = [ArgumentError, TypeError]
modules = [Math, Comparable]
rescues = exceptions + modules
exceptions.each do |exc|
check_nothing_fails(true) {
return_value = assert_raise(*rescues) {
raise exc, "Error"
}
}
check(return_value.instance_of?(exc), "Should have returned #{exc} but was #{return_value.class}")
check(return_value.message == "Error", "Should have returned the correct exception from a successful assert_raise")
end
modules.each do |mod|
check_nothing_fails(true) {
return_value = assert_raise(*rescues) {
raise Exception.new("Error").extend(mod)
}
}
check(mod === return_value, "Should have returned #{mod}")
check(return_value.message == "Error", "Should have returned the correct exception from a successful assert_raise")
end
check_fails("<[ArgumentError, TypeError, Math, Comparable]> exception expected but none was thrown.") {
assert_raise(*rescues) {
1 + 1
}
}
check_fails(%r{\Afailed assert_raise.
<\[ArgumentError, TypeError\]> exception expected but was
Class: <RuntimeError>
Message: <"Error">
---Backtrace---
.+
---------------\Z}m) {
assert_raise(ArgumentError, TypeError, "failed assert_raise") {
raise "Error"
}
}
end
def test_assert_instance_of
check_nothing_fails {
assert_instance_of(String, "string")
}
check_nothing_fails {
assert_instance_of(String, "string", "successful assert_instance_of")
}
check_nothing_fails {
assert_instance_of(String, "string", "successful assert_instance_of")
}
check_fails(%Q{<"string"> expected to be an instance of\n<Hash> but was\n<String>.}) {
assert_instance_of(Hash, "string")
}
check_fails(%Q{failed assert_instance_of.\n<"string"> expected to be an instance of\n<Hash> but was\n<String>.}) {
assert_instance_of(Hash, "string", "failed assert_instance_of")
}
end
def test_assert_nil
check_nothing_fails {
assert_nil(nil)
}
check_nothing_fails {
assert_nil(nil, "successful assert_nil")
}
check_nothing_fails {
assert_nil(nil, "successful assert_nil")
}
check_fails(%Q{<nil> expected but was\n<"string">.}) {
assert_nil("string")
}
check_fails(%Q{failed assert_nil.\n<nil> expected but was\n<"string">.}) {
assert_nil("string", "failed assert_nil")
}
end
def test_assert_not_nil
check_nothing_fails{assert_not_nil(false)}
check_nothing_fails{assert_not_nil(false, "message")}
check_fails("<nil> expected to not be nil."){assert_not_nil(nil)}
check_fails("message.\n<nil> expected to not be nil.") {assert_not_nil(nil, "message")}
end
def test_assert_kind_of
check_nothing_fails {
assert_kind_of(Module, Array)
}
check_nothing_fails {
assert_kind_of(Object, "string", "successful assert_kind_of")
}
check_nothing_fails {
assert_kind_of(Object, "string", "successful assert_kind_of")
}
check_nothing_fails {
assert_kind_of(Comparable, 1)
}
check_fails(%Q{<"string">\nexpected to be kind_of?\n<Class> but was\n<String>.}) {
assert_kind_of(Class, "string")
}
check_fails(%Q{failed assert_kind_of.\n<"string">\nexpected to be kind_of?\n<Class> but was\n<String>.}) {
assert_kind_of(Class, "string", "failed assert_kind_of")
}
end
def test_assert_match
check_nothing_fails {
assert_match(/strin./, "string")
}
check_nothing_fails {
assert_match("strin", "string")
}
check_nothing_fails {
assert_match(/strin./, "string", "successful assert_match")
}
check_nothing_fails {
assert_match(/strin./, "string", "successful assert_match")
}
check_fails(%Q{<"string"> expected to be =~\n</slin./>.}) {
assert_match(/slin./, "string")
}
check_fails(%Q{<"string"> expected to be =~\n</strin\\./>.}) {
assert_match("strin.", "string")
}
check_fails(%Q{failed assert_match.\n<"string"> expected to be =~\n</slin./>.}) {
assert_match(/slin./, "string", "failed assert_match")
}
end
def test_assert_same
thing = "thing"
check_nothing_fails {
assert_same(thing, thing)
}
check_nothing_fails {
assert_same(thing, thing, "successful assert_same")
}
check_nothing_fails {
assert_same(thing, thing, "successful assert_same")
}
thing2 = "thing"
check_fails(%Q{<"thing">\nwith id <#{thing.__id__}> expected to be equal? to\n<"thing">\nwith id <#{thing2.__id__}>.}) {
assert_same(thing, thing2)
}
check_fails(%Q{failed assert_same.\n<"thing">\nwith id <#{thing.__id__}> expected to be equal? to\n<"thing">\nwith id <#{thing2.__id__}>.}) {
assert_same(thing, thing2, "failed assert_same")
}
end
def test_assert_nothing_raised
check_nothing_fails {
assert_nothing_raised {
1 + 1
}
}
check_nothing_fails {
assert_nothing_raised("successful assert_nothing_raised") {
1 + 1
}
}
check_nothing_fails {
assert_nothing_raised("successful assert_nothing_raised") {
1 + 1
}
}
check_nothing_fails {
begin
assert_nothing_raised(RuntimeError, StandardError, Comparable, "successful assert_nothing_raised") {
raise ZeroDivisionError.new("ArgumentError")
}
rescue ZeroDivisionError
end
}
check_fails("Should expect a class of exception, Object.\n<false> is not true.") {
assert_nothing_raised(Object) {
1 + 1
}
}
check_fails(%r{\AException raised:\nClass: <RuntimeError>\nMessage: <"Error">\n---Backtrace---\n.+\n---------------\Z}m) {
assert_nothing_raised {
raise "Error"
}
}
check_fails(%r{\Afailed assert_nothing_raised\.\nException raised:\nClass: <RuntimeError>\nMessage: <"Error">\n---Backtrace---\n.+\n---------------\Z}m) {
assert_nothing_raised("failed assert_nothing_raised") {
raise "Error"
}
}
check_fails(%r{\AException raised:\nClass: <RuntimeError>\nMessage: <"Error">\n---Backtrace---\n.+\n---------------\Z}m) {
assert_nothing_raised(StandardError, RuntimeError) {
raise "Error"
}
}
check_fails("Failure.") do
assert_nothing_raised do
flunk("Failure")
end
end
end
def test_flunk
check_fails("Flunked.") {
flunk
}
check_fails("flunk message.") {
flunk("flunk message")
}
end
def test_assert_not_same
thing = "thing"
thing2 = "thing"
check_nothing_fails {
assert_not_same(thing, thing2)
}
check_nothing_fails {
assert_not_same(thing, thing2, "message")
}
check_fails(%Q{<"thing">\nwith id <#{thing.__id__}> expected to not be equal? to\n<"thing">\nwith id <#{thing.__id__}>.}) {
assert_not_same(thing, thing)
}
check_fails(%Q{message.\n<"thing">\nwith id <#{thing.__id__}> expected to not be equal? to\n<"thing">\nwith id <#{thing.__id__}>.}) {
assert_not_same(thing, thing, "message")
}
end
def test_assert_not_equal
check_nothing_fails {
assert_not_equal("string1", "string2")
}
check_nothing_fails {
assert_not_equal("string1", "string2", "message")
}
check_fails(%Q{<"string"> expected to be != to\n<"string">.}) {
assert_not_equal("string", "string")
}
check_fails(%Q{message.\n<"string"> expected to be != to\n<"string">.}) {
assert_not_equal("string", "string", "message")
}
end
def test_assert_no_match
check_nothing_fails{assert_no_match(/sling/, "string")}
check_nothing_fails{assert_no_match(/sling/, "string", "message")}
check_fails(%Q{The first argument to assert_no_match should be a Regexp.\n<"asdf"> expected to be an instance of\n<Regexp> but was\n<String>.}) do
assert_no_match("asdf", "asdf")
end
check_fails(%Q{</string/> expected to not match\n<"string">.}) do
assert_no_match(/string/, "string")
end
check_fails(%Q{message.\n</string/> expected to not match\n<"string">.}) do
assert_no_match(/string/, "string", "message")
end
end
def test_assert_throws
check_nothing_fails {
assert_throws(:thing, "message") {
throw :thing
}
}
check_fails("message.\n<:thing> expected to be thrown but\n<:thing2> was thrown.") {
assert_throws(:thing, "message") {
throw :thing2
}
}
check_fails("message.\n<:thing> should have been thrown.") {
assert_throws(:thing, "message") {
1 + 1
}
}
end
def test_assert_nothing_thrown
check_nothing_fails {
assert_nothing_thrown("message") {
1 + 1
}
}
check_fails("message.\n<:thing> was thrown when nothing was expected.") {
assert_nothing_thrown("message") {
throw :thing
}
}
end
def test_assert_operator
check_nothing_fails {
assert_operator("thing", :==, "thing", "message")
}
check_fails(%Q{<0.15>\ngiven as the operator for assert_operator("thing", 0.15, "thing")
end
check_fails(%Q{message.\n<"thing1"> expected to be\n==\n<"thing2">.}) {
assert_operator("thing1", :==, "thing2", "message")
}
end
def test_assert_respond_to
check_nothing_fails {
assert_respond_to("thing", :to_s, "message")
}
check_nothing_fails {
assert_respond_to("thing", "to_s", "message")
}
check_fails("<0.15>\ngiven as the method name argument to #assert_respond_to must be a Symbol or #respond_to?(:to_str).") {
assert_respond_to("thing", 0.15)
}
check_fails("message.\n<:symbol>\nof type <Symbol>\nexpected to respond_to?<:non_existent>.") {
assert_respond_to(:symbol, :non_existent, "message")
}
end
def test_assert_in_delta
check_nothing_fails {
assert_in_delta(1.4, 1.4, 0)
}
check_nothing_fails {
assert_in_delta(0.5, 0.4, 0.1, "message")
}
check_nothing_fails {
float_thing = Object.new
def float_thing.to_f
0.2
end
assert_in_delta(0.1, float_thing, 0.1)
}
check_fails("message.\n<0.5> and\n<0.4> expected to be within\n<0.05> of each other.") {
assert_in_delta(0.5, 0.4, 0.05, "message")
}
check_fails(%r{The arguments must respond to to_f; the first float did not\.\n<.+>\nof type <Object>\nexpected to respond_to\?<:to_f>.}) {
assert_in_delta(Object.new, 0.4, 0.1)
}
check_fails("The delta should not be negative.\n<-0.1> expected to be\n>=\n<0.0>.") {
assert_in_delta(0.5, 0.4, -0.1, "message")
}
end
def test_assert_send
object = Object.new
class << object
private
def return_argument(argument, bogus)
return argument
end
end
check_nothing_fails {
assert_send([object, :return_argument, true, "bogus"], "message")
}
check_fails(%r{\Amessage\.\n<.+> expected to respond to\n<return_argument\(\[false, "bogus"\]\)> with a true value.\Z}) {
assert_send([object, :return_argument, false, "bogus"], "message")
}
end
def test_condition_invariant
object = Object.new
def object.inspect
@changed = true
end
def object.==(other)
@changed ||= false
return (!@changed)
end
check_nothing_fails {
assert_equal(object, object, "message")
}
end
def add_failure(message, location=caller)
if (!@catch_assertions)
super
end
end
def add_assertion
if (!@catch_assertions)
super
else
@actual_assertion_count += 1
end
end
end
end
end