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Diffstat (limited to 'lib/test/unit/assertions.rb')
| -rw-r--r-- | lib/test/unit/assertions.rb | 400 |
1 files changed, 0 insertions, 400 deletions
diff --git a/lib/test/unit/assertions.rb b/lib/test/unit/assertions.rb deleted file mode 100644 index b0df0ea2db..0000000000 --- a/lib/test/unit/assertions.rb +++ /dev/null @@ -1,400 +0,0 @@ -# :nodoc: -# -# Author:: Nathaniel Talbott. -# Copyright:: Copyright (c) 2000-2003 Nathaniel Talbott. All rights reserved. -# License:: Ruby license. - -require 'test/unit/assertionfailederror' - -module Test # :nodoc: - module Unit # :nodoc: - - # Contains all of the standard Test::Unit assertions. Mixed in - # to Test::Unit::TestCase. To mix it in and use its - # functionality, you simply need to rescue - # Test::Unit::AssertionFailedError, and you can additionally - # override add_assertion to be notified whenever an assertion - # is made. - # - # Notes: - # * The message to each assertion, if given, will be - # propagated with the failure. - # * It's easy to add your own assertions based on assert_block(). - module Assertions - - # The assertion upon which all other assertions are - # based. Passes if the block yields true. - public - def assert_block(message="") # :yields: - _wrap_assertion do - if (! yield) - raise AssertionFailedError.new(message.to_s) - end - end - end - - # Passes if boolean is true. - public - def assert(boolean, message="") - _wrap_assertion do - assert_block("assert should not be called with a block.") { !block_given? } - assert_block(message) { boolean } - end - end - - # Passes if expected == actual. Note that the ordering of - # arguments is important, since a helpful error message is - # generated when this one fails that tells you the values - # of expected and actual. - public - def assert_equal(expected, actual, message=nil) - full_message = build_message(message, expected, actual) do |arg1, arg2| - "<#{arg1}> expected but was\n" + - "<#{arg2}>" - end - assert_block(full_message) { expected == actual } - end - - # Passes if block raises exception. - public - def assert_raises(expected_exception_klass, message="") - _wrap_assertion do - assert_instance_of(Class, expected_exception_klass, "Should expect a class of exception") - actual_exception = nil - full_message = build_message(message, expected_exception_klass) do |arg| - "<#{arg}> exception expected but none was thrown" - end - assert_block(full_message) do - thrown = false - begin - yield - rescue Exception => thrown_exception - actual_exception = thrown_exception - thrown = true - end - thrown - end - full_message = build_message(message, expected_exception_klass, actual_exception) do |arg1, arg2| - "<#{arg1}> exception expected but was\n" + - arg2 - end - assert_block(full_message) { expected_exception_klass == actual_exception.class } - actual_exception - end - end - - # Passes if object.class == klass. - public - def assert_instance_of(klass, object, message="") - _wrap_assertion do - assert_equal(Class, klass.class, "assert_instance_of takes a Class as its first argument") - full_message = build_message(message, object, klass, object.class) do |arg1, arg2, arg3| - "<#{arg1}> expected to be an instance of\n" + - "<#{arg2}> but was\n" + - "<#{arg3}>" - end - assert_block(full_message) { klass == object.class } - end - end - - # Passes if object.nil?. - public - def assert_nil(object, message="") - assert_equal(nil, object, message) - end - - # Passes if object.kind_of?(klass). - public - def assert_kind_of(klass, object, message="") - _wrap_assertion do - assert(klass.kind_of?(Module), "The first parameter to assert_kind_of should be a kind_of Module.") - full_message = build_message(message, object, klass) do |arg1, arg2| - "<#{arg1}>\n" + - "expected to be kind_of?<#{arg2}>" - end - assert_block(full_message) { object.kind_of?(klass) } - end - end - - # Passes if object.respond_to?(method) is true. - public - def assert_respond_to(object, method, message="") - _wrap_assertion do - assert(method.kind_of?(Symbol) || method.kind_of?(String), "The method argument to #assert_respond_to should be specified as a Symbol or a String.") - full_message = build_message(message, object, object.class, method) do |arg1, arg2, arg3| - "<#{arg1}>\n" + - "of type <#{arg2}>\n" + - "expected to respond_to?<#{arg3}>" - end - assert_block(full_message) { object.respond_to?(method) } - end - end - - # Passes if string =~ pattern. - public - def assert_match(pattern, string, message="") - _wrap_assertion do - full_message = build_message(message, string, pattern) do |arg1, arg2| - "<#{arg1}> expected to be =~\n" + - "<#{arg2}>" - end - pattern = case(pattern) - when String - Regexp.new(pattern) - else - pattern - end - assert_block(full_message) { string =~ pattern } - end - end - - # Passes if actual.equal?(expected) (i.e. they are the - # same instance). - public - def assert_same(expected, actual, message="") - full_message = build_message(message, expected, expected.__id__, actual, actual.__id__) do |arg1, arg2, arg3, arg4| - "<#{arg1}:#{arg2}> expected to be equal? to\n" + - "<#{arg3}:#{arg4}>" - end - assert_block(full_message) { actual.equal?(expected) } - end - - # Compares the two objects based on the passed - # operator. Passes if object1.send(operator, object2) is - # true. - public - def assert_operator(object1, operator, object2, message="") - full_message = build_message(message, object1, operator, object2) do |arg1, arg2, arg3| - "<#{arg1}> expected to be\n" + - "#{arg2}\n" + - "<#{arg3}>" - end - assert_block(full_message) { object1.send(operator, object2) } - end - - # Passes if block does not raise an exception. - public - def assert_nothing_raised(*args) - _wrap_assertion do - message = "" - if (!args[-1].instance_of?(Class)) - message = args.pop - end - begin - yield - rescue Exception => thrown_exception - if (args.empty? || args.include?(thrown_exception.class)) - full_message = build_message(message, thrown_exception) do |arg1| - "Exception raised:\n" + - arg1 - end - flunk(full_message) - else - raise thrown_exception.class, thrown_exception.message, thrown_exception.backtrace - end - end - nil - end - end - - # Always fails. - public - def flunk(message="") - assert(false, message) - end - - # Passes if !actual.equal?(expected). - public - def assert_not_same(expected, actual, message="") - full_message = build_message(message, expected, expected.__id__, actual, actual.__id__) do |arg1, arg2, arg3, arg4| - "<#{arg1}:#{arg2}> expected to not be equal? to\n" + - "<#{arg3}:#{arg4}>" - end - assert_block(full_message) { !actual.equal?(expected) } - end - - # Passes if expected != actual. - public - def assert_not_equal(expected, actual, message="") - full_message = build_message(message, expected, actual) do |arg1, arg2| - "<#{arg1}> expected to be != to\n" + - "<#{arg2}>" - end - assert_block(full_message) { expected != actual } - end - - # Passes if !object.nil?. - public - def assert_not_nil(object, message="") - full_message = build_message(message, object) do |arg| - "<#{arg}> expected to not be nil" - end - assert_block(full_message) { !object.nil? } - end - - # Passes if string !~ regularExpression. - public - def assert_no_match(regexp, string, message="") - _wrap_assertion do - assert_instance_of(Regexp, regexp, "The first argument to assert_does_not_match should be a Regexp.") - full_message = build_message(message, regexp.source, string) do |arg1, arg2| - "</#{arg1}/> expected to not match\n" + - " <#{arg2}>" - end - assert_block(full_message) { regexp !~ string } - end - end - - # Passes if block throws symbol. - public - def assert_throws(expected_symbol, message="", &proc) - _wrap_assertion do - assert_instance_of(Symbol, expected_symbol, "assert_throws expects the symbol that should be thrown for its first argument") - assert(block_given?, "Should have passed a block to assert_throws") - caught = true - begin - catch(expected_symbol) do - proc.call - caught = false - end - full_message = build_message(message, expected_symbol) do |arg| - "<:#{arg}> should have been thrown" - end - assert(caught, full_message) - rescue NameError => name_error - if ( name_error.message !~ /^uncaught throw `(.+)'$/ ) #` - raise name_error - end - full_message = build_message(message, expected_symbol, $1) do |arg1, arg2| - "<:#{arg1}> expected to be thrown but\n" + - "<:#{arg2}> was thrown" - end - flunk(full_message) - end - end - end - - # Passes if block does not throw anything. - public - def assert_nothing_thrown(message="", &proc) - _wrap_assertion do - assert(block_given?, "Should have passed a block to assert_nothing_thrown") - begin - proc.call - rescue NameError => name_error - if (name_error.message !~ /^uncaught throw `(.+)'$/ ) #` - raise name_error - end - full_message = build_message(message, $1) do |arg| - "<:#{arg}> was thrown when nothing was expected" - end - flunk(full_message) - end - full_message = build_message(message) { || "Expected nothing to be thrown" } - assert(true, full_message) - end - end - - # Passes if expected_float and actual_float are equal - # within delta tolerance. - public - def assert_in_delta(expected_float, actual_float, delta, message="") - _wrap_assertion do - {expected_float => "first float", actual_float => "second float", delta => "delta"}.each do |float, name| - assert_respond_to(float, :to_f, "The arguments must respond to to_f; the #{name} did not") - end - assert_operator(delta, :>=, 0.0, "The delta should not be negative") - full_message = build_message(message, expected_float, actual_float, delta) do |arg1, arg2, arg3| - "<#{arg1}> and\n" + - "<#{arg2}> expected to be within\n" + - "<#{arg3}> of each other" - end - assert_block(full_message) { (expected_float.to_f - actual_float.to_f).abs <= delta.to_f } - end - end - - # Passes if the method sent returns a true value. - public - def assert_send(send_array, message="") - _wrap_assertion do - assert_instance_of(Array, send_array, "assert_send requires an array of send information") - assert(send_array.size >= 2, "assert_send requires at least a receiver and a message name") - full_message = build_message(message, send_array[0], send_array[1], send_array[2..-1]) do |arg1, arg2, arg3| - "<#{arg1}> expected to respond to\n" + - "<#{arg2}(#{arg3})> with true" - end - assert_block(full_message) { send_array[0].__send__(send_array[1], *send_array[2..-1]) } - end - end - - public - def build_message(message, *arguments, &block) # :nodoc: - return AssertionMessage.new(message.to_s, arguments, block) - end - - private - def _wrap_assertion # :nodoc: - @_assertion_wrapped ||= false - unless (@_assertion_wrapped) - @_assertion_wrapped = true - begin - add_assertion - return yield - ensure - @_assertion_wrapped = false - end - else - return yield - end - end - - # Called whenever an assertion is made. - private - def add_assertion - end - - class AssertionMessage # :nodoc: all - def self.convert(object) - case object - when String - return object - when Symbol - return object.to_s - when Regexp - return "/#{object.source}/" - when Exception - return "Class: <#{object.class}>\n" + - "Message: <#{object.message}>\n" + - "---Backtrace---\n" + - object.backtrace.join("\n") + "\n" + - "---------------" - else - return object.inspect - end - end - - def initialize(message, parameters, block) - @message = message - @parameters = parameters - @block = block - end - - def to_s - message_parts = [] - if (@message != nil && @message != "") - if (@message !~ /\.$/) - @message << "." - end - message_parts << @message - end - @parameters = @parameters.collect { - | parameter | - self.class.convert(parameter) - } - message_parts << @block.call(*@parameters) - return message_parts.join("\n") - end - end - end - end -end |