From 57f71c28bffe3019d58281b16a31d167289ecfa7 Mon Sep 17 00:00:00 2001
From: Pablo Herrero <pablodherrero@gmail.com>
Date: Sun, 31 Mar 2013 20:24:01 -0300
Subject: Break down  Rails::Generator::TestCase into modules

---
 .../lib/rails/generators/testing/assertions.rb     | 124 +++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 railties/lib/rails/generators/testing/assertions.rb

(limited to 'railties/lib/rails/generators/testing/assertions.rb')

diff --git a/railties/lib/rails/generators/testing/assertions.rb b/railties/lib/rails/generators/testing/assertions.rb
new file mode 100644
index 0000000000..ee47e28983
--- /dev/null
+++ b/railties/lib/rails/generators/testing/assertions.rb
@@ -0,0 +1,124 @@
+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)
+          assert File.exists?(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.exists?(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
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