class Test::Unit::TestCase

Ties everything together. If you subclass and add your own test methods, it takes care of making them into tests and wrapping those tests into a suite. It also does the nitty-gritty of actually running an individual test and collecting its results into a Test::Unit::TestResult object.

You can run two hooks before/after a TestCase run.

Example:

class TestMyClass < Test::Unit::TestCase
  class << self
    def startup
      ...
    end

    def shutdown
      ...
    end
  end

  def setup
    ...
  end

  def cleanup
    ...
  end

  def teardown
    ...
  end

  def test_my_method1
    ...
  end

  def test_my_method2
    ...
  end
end

Here is a call order:

startup
setup
test_my_method1
cleanup
teardown
setup
test_my_method2
cleanup
teardown
shutdown

You can set an attribute to each test.

Example:

class TestMyClass < Test::Unit::TestCase
  attribute :speed, :fast
  def test_my_fast_method
    # You can get the attribute via `self[]`
    self[:speed] # => :fast
    ...
  end

  attribute :speed, :slow
  def test_my_slow_method
    self[:speed] # => :slow
    ...
  end
end

Attributes

method_name[R]

Public Class Methods

description(value, target=nil) click to toggle source

Describes a test.

The following example associates “register a normal user” description with “test_register” test.

description "register a normal user"
def test_register
  ...
end

# File lib/test/unit/testcase.rb, line 341
def description(value, target=nil)
  targets = [target].compact
  attribute(:description, value, {}, *targets)
end

find_locations(query) click to toggle source

# File lib/test/unit/testcase.rb, line 407
def find_locations(query)
  query_path = query[:path]
  query_line = query[:line]
  query_method_name = query[:method_name]

  available_locations = target_method_locations(query_path)
  if query_line
    available_locations = available_locations.sort_by do |location|
      -location[:line]
    end
    available_location = available_locations.find do |location|
      query_line >= location[:line]
    end
    return [] if available_location.nil?
    return [] if available_location[:test_case] != self
    available_locations = [available_location]
  end
  if query_method_name
    available_location = available_locations.find do |location|
      location[:test_case] == self and
        query_method_name == location[:method_name]
    end
    return [] if available_location.nil?
    available_locations = [available_location]
  end

  available_locations
end

new(test_method_name) click to toggle source

Creates a new instance of the fixture for running the test represented by test_method_name.

# File lib/test/unit/testcase.rb, line 483
def initialize(test_method_name)
  @method_name = test_method_name
  @internal_data = InternalData.new
end

shutdown() click to toggle source

Called after every test case runs. Can be used to tear down fixture information used in test case scope.

Here is an example test case:

class TestMyClass < Test::Unit::TestCase
  class << self
    def shutdown
      ...
    end
  end

  def teardown
    ...
  end

  def test_my_class1
    ...
  end

  def test_my_class2
    ...
  end
end

Here is a call order:

test_my_class1 (or test_my_class2)
teardown
test_my_class2 (or test_my_class1)
teardown
shutdown

Note that you should not assume test order. Tests should be worked in any order.

# File lib/test/unit/testcase.rb, line 254
def shutdown
end

startup() click to toggle source

Called before every test case runs. Can be used to set up fixture information used in test case scope.

Here is an example test case:

class TestMyClass < Test::Unit::TestCase
  class << self
    def startup
      ...
    end
  end

  def setup
    ...
  end

  def test_my_class1
    ...
  end

  def test_my_class2
    ...
  end
end

Here is a call order:

startup
setup
test_my_class1 (or test_my_class2)
setup
test_my_class2 (or test_my_class1)

Note that you should not assume test order. Tests should be worked in any order.

# File lib/test/unit/testcase.rb, line 218
def startup
end

sub_test_case(name, &block) click to toggle source

Defines a sub test case.

This is a syntax sugar. The both of the following codes are the same in meaning:

Standard:

class TestParent < Test::Unit::TestCase
  class TestChild < self
    def test_in_child
    end
  end
end

Syntax sugar:

class TestParent < Test::Unit::TestCase
  sub_test_case("TestChild") do
    def test_in_child
    end
  end
end

The difference of them are the following:

Test case created by {sub_test_case} is an anonymous class. So you can't refer the test case by name.
The class name of class style must follow constant naming rule in Ruby. But the name of test case created by {sub_test_case} doesn't need to follow the rule. For example, you can use a space in name such as “child test”.

@param name [String] The name of newly created sub test case. @yield

The block is evaluated under the newly created sub test
case class context.

@return [Test::Unit::TestCase] Created sub test case class.

# File lib/test/unit/testcase.rb, line 381
def sub_test_case(name, &block)
  parent_test_case = self
  sub_test_case = Class.new(self) do
    singleton_class = class << self; self; end
    singleton_class.__send__(:define_method, :name) do
      [parent_test_case.name, name].compact.join("::")
    end
  end
  sub_test_case.class_eval(&block)
  sub_test_case
end

suite() click to toggle source

Rolls up all of the test* methods in the fixture into one suite, creating a new instance of the fixture for each method.

# File lib/test/unit/testcase.rb, line 179
def suite
  suite_creator = TestSuiteCreator.new(self)
  suite_creator.create
end

test(*test_description_or_targets, &block) click to toggle source

Defines a test in declarative syntax or marks following method as a test method.

In declarative syntax usage, the following two test definitions are the almost same:

description "register user"
def test_register_user
  ...
end

test "register user" do
  ...
end

In test method mark usage, the “my_test_method” is treated as a test method:

test
def my_test_method
  assert_equal("call me", ...)
end

# File lib/test/unit/testcase.rb, line 304
def test(*test_description_or_targets, &block)
  if block_given?
    test_description = test_description_or_targets.first
    if test_description.nil?
      raise ArgumentError, "test description is missing"
    end
    n_arguments = test_description_or_targets.size
    if n_arguments > 1
      message = "wrong number of arguments (#{n_arguments} for 1)"
      raise ArgumentError, message
    end
    method_name = "test: #{test_description}"
    description(test_description, method_name)
    attribute(:test, true, {}, method_name)
    if block.respond_to?(:source_location)
      attribute(:source_location, block.source_location, {}, method_name)
    end
    define_method(method_name, &block)
  else
    targets = test_description_or_targets
    attribute(:test, true, {}, *targets)
    targets.each do |target|
      AutoRunnerLoader.check(self, target)
    end
  end
end

test_defined?(query) click to toggle source

Checks whether a test that is matched the query is defined.

@option query [String] :path (nil)

the path where a test is defined in.

@option query [Numeric] :line (nil)

the line number where a test is defined at.

@option query [String] :method_name (nil)

the method name for a test.

# File lib/test/unit/testcase.rb, line 402
def test_defined?(query)
  locations = find_locations(query)
  not locations.empty?
end

test_order() click to toggle source

Returns the current test order. This returns :alphabetic by default.

# File lib/test/unit/testcase.rb, line 261
def test_order
  ancestors.each do |ancestor|
    order = @@test_orders[ancestor]
    return order if order
  end
  AVAILABLE_ORDERS.first
end

test_order=(order) click to toggle source

Sets the current test order.

Here are the available order:

:alphabetic: Default. Tests are sorted in alphabetic order.
:random: Tests are sorted in random order.
:defined: Tests are sorted in defined order.

# File lib/test/unit/testcase.rb, line 278
def test_order=(order)
  @@test_orders[self] = order
end

Private Class Methods

add_method_location(location) click to toggle source

@private

# File lib/test/unit/testcase.rb, line 448
def add_method_location(location)
  @@method_location_mutex.synchronize do
    method_locations << location
  end
end

method_locations() click to toggle source

@private

# File lib/test/unit/testcase.rb, line 443
def method_locations
  @@method_locations[self] ||= []
end

target_method_locations(path) click to toggle source

@private

# File lib/test/unit/testcase.rb, line 455
def target_method_locations(path)
  @@method_location_mutex.synchronize do
    if path.nil?
      self_location = method_locations.first
      path = self_location[:path] if self_location
    end
    return [] if path.nil?

    target_locations = []
    @@method_locations.each do |test_case, locations|
      locations.each do |location|
        absolete_path = File.expand_path(path)
        location_path = location[:path]
        location_basename = File.basename(location_path)
        if location_path == absolete_path or location_basename == path
          target_locations << location.merge(:test_case => test_case)
        end
      end
    end
    target_locations
  end
end

Public Instance Methods

==(other) click to toggle source

It's handy to be able to compare TestCase instances.

# File lib/test/unit/testcase.rb, line 743
def ==(other)
  return false unless other.kind_of?(self.class)
  return false unless @method_name == other.method_name
  return false unless data_label == other.data_label
  self.class == other.class
end

add_pass() click to toggle source

Notify that the test is passed. Normally, it is not needed because run calls it automatically. If you want to override run, it is not a good idea. Please contact test-unit developers. We will help you without your custom run. For example, we may add a new hook in run.

This is a public API for developers who extend test-unit.

@return [void]

# File lib/test/unit/testcase.rb, line 792
def add_pass
  current_result.add_pass
end

cleanup() click to toggle source

Called after every test method runs but the test method isn't marked as 'passed'. Can be used to clean up and/or verify tested condition. e.g. Can be used to verify mock.

You can add additional cleanup tasks by the following code:

class TestMyClass < Test::Unit::TestCase
  def cleanup
    ...
  end

  cleanup
  def my_cleanup1
    ...
  end

  cleanup do
    ... # cleanup callback1
  end

  cleanup
  def my_cleanup2
    ...
  end

  cleanup do
    ... # cleanup callback2
  end

  def test_my_class
    ...
  end
end

Here is a call order:

test_my_class
cleanup callback2
my_cleanup2
cleanup callback1
my_cleanup1
cleanup

# File lib/test/unit/testcase.rb, line 642
def cleanup
end

data() click to toggle source

Returns test data for the test. If the test isn't associated with any test data, it returns nil.

# File lib/test/unit/testcase.rb, line 705
def data
  @internal_data.test_data
end

data_label() click to toggle source

Returns a label of test data for the test. If the test isn't associated with any test data, it returns nil.

# File lib/test/unit/testcase.rb, line 699
def data_label
  @internal_data.test_data_label
end

default_test() click to toggle source

# File lib/test/unit/testcase.rb, line 688
def default_test
  flunk("No tests were specified")
end

description() click to toggle source

Returns a description for the test. A description will be associated by ::test or ::description.

Returns a name for the test for no description test.

# File lib/test/unit/testcase.rb, line 733
def description
  self[:description] || name
end

elapsed_time() click to toggle source

Returns elapsed time for the test was ran.

# File lib/test/unit/testcase.rb, line 756
def elapsed_time
  @internal_data.elapsed_time
end

interrupted?() click to toggle source

Returns whether the test is interrupted.

# File lib/test/unit/testcase.rb, line 761
def interrupted?
  @internal_data.interrupted?
end

local_name() click to toggle source

Returns a human-readable name for the specific test that this instance of TestCase represents.

`#local_name` doesn't include class name. `#name` includes class name.

# File lib/test/unit/testcase.rb, line 720
def local_name
  if @internal_data.have_test_data?
    "#{@method_name}[#{data_label}]"
  else
    @method_name.to_s
  end
end

name() click to toggle source

Returns a human-readable name for the specific test that this instance of TestCase represents.

# File lib/test/unit/testcase.rb, line 711
def name
  "#{local_name}(#{self.class.name})"
end

passed?() click to toggle source

Returns whether this individual test passed or not. Primarily for use in teardown so that artifacts can be left behind if the test fails.

# File lib/test/unit/testcase.rb, line 768
def passed?
  @internal_data.passed?
end

problem_occurred() click to toggle source

Notify that a problem is occurred in the test. It means that the test is a failed test. If any failed tests exist in test suites, the test process exits with failure exit status.

This is a public API for developers who extend test-unit.

@return [void]

# File lib/test/unit/testcase.rb, line 779
def problem_occurred
  @internal_data.problem_occurred
end

run(result) { |STARTED, name| ... } click to toggle source

Runs the individual test method represented by this instance of the fixture, collecting statistics, failures and errors in result.

# File lib/test/unit/testcase.rb, line 510
def run(result)
  begin
    @_result = result
    @internal_data.test_started
    yield(STARTED, name)
    yield(STARTED_OBJECT, self)
    processed_exception_in_setup = false
    begin
      catch do |tag|
        run_setup do
          begin
            run_test
            run_cleanup
            add_pass
          rescue Exception
            @internal_data.interrupted
            unless handle_exception($!)
              processed_exception_in_setup = true
              raise
            end
            throw(tag)
          end
        end
      end
    rescue Exception
      if processed_exception_in_setup
        raise
      else
        @internal_data.interrupted
        raise unless handle_exception($!)
      end
    ensure
      begin
        run_teardown
      rescue Exception
        raise unless handle_exception($!)
      end
    end
    @internal_data.test_finished
    result.add_run
    yield(FINISHED, name)
    yield(FINISHED_OBJECT, self)
  ensure
    # @_result = nil # For test-spec's after_all :<
  end
end

setup() click to toggle source

Called before every test method runs. Can be used to set up fixture information.

You can add additional setup tasks by the following code:

class TestMyClass < Test::Unit::TestCase
  def setup
    ...
  end

  setup
  def my_setup1
    ...
  end

  setup do
    ... # setup callback1
  end

  setup
  def my_setup2
    ...
  end

  setup do
    ... # setup callback2
  end

  def test_my_class
    ...
  end
end

Here is a call order:

setup
my_setup1
setup callback1
my_setup2
setup callback2
test_my_class

# File lib/test/unit/testcase.rb, line 597
def setup
end

size() click to toggle source

# File lib/test/unit/testcase.rb, line 692
def size
  1
end

start_time() click to toggle source

Returns a Time at the test was started.

# File lib/test/unit/testcase.rb, line 751
def start_time
  @internal_data.start_time
end

teardown() click to toggle source

Called after every test method runs. Can be used to tear down fixture information.

You can add additional teardown tasks by the following code:

class TestMyClass < Test::Unit::TestCase
  def teardown
    ...
  end

  teardown
  def my_teardown1
    ...
  end

  teardown do
    ... # teardown callback1
  end

  teardown
  def my_teardown2
    ...
  end

  teardown do
    ... # teardown callback2
  end

  def test_my_class
    ...
  end
end

Here is a call order:

test_my_class
teardown callback2
my_teardown2
teardown callback1
my_teardown1
teardown

# File lib/test/unit/testcase.rb, line 685
def teardown
end

to_s() click to toggle source

Overridden to return name.

# File lib/test/unit/testcase.rb, line 738
def to_s
  name
end

Private Instance Methods

add_assertion() click to toggle source

# File lib/test/unit/testcase.rb, line 833
def add_assertion
  current_result.add_assertion
end

current_result() click to toggle source

# File lib/test/unit/testcase.rb, line 797
def current_result
  @_result
end

handle_exception(exception) click to toggle source

# File lib/test/unit/testcase.rb, line 821
def handle_exception(exception)
  self.class.exception_handlers.each do |handler|
    if handler.respond_to?(:call)
      handled = handler.call(self, exception)
    else
      handled = __send__(handler, exception)
    end
    return true if handled
  end
  false
end

run_test() click to toggle source

# File lib/test/unit/testcase.rb, line 801
def run_test
  signature = "#{self.class}\##{@method_name}"
  redefined_info = self[:redefined]
  if redefined_info
    notify("<#{signature}> was redefined",
           :backtrace => redefined_info[:backtrace])
  end
  if @internal_data.have_test_data?
    test_method = method(@method_name)
    arity = test_method.arity
    if arity.zero?
      __send__(@method_name)
    else
      __send__(@method_name, @internal_data.test_data)
    end
  else
    __send__(@method_name)
  end
end