module Rails module Generators module Testing module Assertions # Asserts a given file exists. You need to supply an absolute path or a path relative # to the configured destination: # # assert_file "config/environment.rb" # # You can also give extra arguments. If the argument is a regexp, it will check if the # regular expression matches the given file content. If it's a string, it compares the # file with the given string: # # assert_file "config/environment.rb", /initialize/ # # Finally, when a block is given, it yields the file content: # # assert_file "app/controllers/products_controller.rb" do |controller| # assert_instance_method :index, controller do |index| # assert_match(/Product\.all/, index) # end # end def assert_file(relative, *contents) absolute = File.expand_path(relative, destination_root).shellescape assert File.exist?(absolute), "Expected file #{relative.inspect} to exist, but does not" read = File.read(absolute) if block_given? || !contents.empty? yield read if block_given? contents.each do |content| case content when String assert_equal content, read when Regexp assert_match content, read end end end alias :assert_directory :assert_file # Asserts a given file does not exist. You need to supply an absolute path or a # path relative to the configured destination: # # assert_no_file "config/random.rb" def assert_no_file(relative) absolute = File.expand_path(relative, destination_root) assert !File.exist?(absolute), "Expected file #{relative.inspect} to not exist, but does" end alias :assert_no_directory :assert_no_file # Asserts a given migration exists. You need to supply an absolute path or a # path relative to the configured destination: # # assert_migration "db/migrate/create_products.rb" # # This method manipulates the given path and tries to find any migration which # matches the migration name. For example, the call above is converted to: # # assert_file "db/migrate/003_create_products.rb" # # Consequently, assert_migration accepts the same arguments has assert_file. def assert_migration(relative, *contents, &block) file_name = migration_file_name(relative) assert file_name, "Expected migration #{relative} to exist, but was not found" assert_file file_name, *contents, &block end # Asserts a given migration does not exist. You need to supply an absolute path or a # path relative to the configured destination: # # assert_no_migration "db/migrate/create_products.rb" def assert_no_migration(relative) file_name = migration_file_name(relative) assert_nil file_name, "Expected migration #{relative} to not exist, but found #{file_name}" end # Asserts the given class method exists in the given content. This method does not detect # class methods inside (class << self), only class methods which starts with "self.". # When a block is given, it yields the content of the method. # # assert_migration "db/migrate/create_products.rb" do |migration| # assert_class_method :up, migration do |up| # assert_match(/create_table/, up) # end # end def assert_class_method(method, content, &block) assert_instance_method "self.#{method}", content, &block end # Asserts the given method exists in the given content. When a block is given, # it yields the content of the method. # # assert_file "app/controllers/products_controller.rb" do |controller| # assert_instance_method :index, controller do |index| # assert_match(/Product\.all/, index) # end # end def assert_instance_method(method, content) assert content =~ /(\s+)def #{method}(\(.+\))?(.*?)\n\1end/m, "Expected to have method #{method}" yield $3.strip if block_given? end alias :assert_method :assert_instance_method # Asserts the given attribute type gets translated to a field type # properly: # # assert_field_type :date, :date_select def assert_field_type(attribute_type, field_type) assert_equal(field_type, create_generated_attribute(attribute_type).field_type) end # Asserts the given attribute type gets a proper default value: # # assert_field_default_value :string, "MyString" def assert_field_default_value(attribute_type, value) assert_equal(value, create_generated_attribute(attribute_type).default) end end end end end