first steps in expectations

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    stendhal (0.0.1)
+    stendhal (0.1.0)
 
 GEM
   remote: http://rubygems.org/

features/examples.feature

@@ -1,10 +1,10 @@
 Feature: Examples and example groups
 
-  Spec-ish Domain Specific Language
+  RSpec-ish Domain Specific Language
 
   Scenario: declare an example
-    Given a directory named "rspec_project"
-    When I cd to "rspec_project"
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
     Given a file named "sample_spec.rb" with:
     """
       describe "something" do
@@ -18,8 +18,8 @@ Feature: Examples and example groups
     And the output should contain "1 example, 0 failures"
 
   Scenario: declare a failing example
-    Given a directory named "rspec_project"
-    When I cd to "rspec_project"
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
     Given a file named "sample_spec.rb" with:
     """
       describe "something" do
@@ -34,8 +34,8 @@ Feature: Examples and example groups
     And the output should contain "1 example, 1 failure"
 
   Scenario: declare a pending example
-    Given a directory named "rspec_project"
-    When I cd to "rspec_project"
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
     Given a file named "sample_spec.rb" with:
     """
       describe "something" do
@@ -50,8 +50,8 @@ Feature: Examples and example groups
     And the output should contain "1 example, 0 failures, 1 pending"
 
   Scenario: declare an example in nested groups
-    Given a directory named "rspec_project"
-    When I cd to "rspec_project"
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
     Given a file named "sample_spec.rb" with:
     """
       describe "something" do
@@ -70,8 +70,8 @@ Feature: Examples and example groups
     And the output should contain "1 example, 0 failures"
 
   Scenario: many examples in different example groups
-    Given a directory named "rspec_project"
-    When I cd to "rspec_project"
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
     Given a file named "sample_spec.rb" with:
     """
       describe "something" do

features/expectations.feature

@@ -0,0 +1,56 @@
+Feature: Expectations
+
+  Stendhal comes with some built-in expectations.
+
+  Scenario: equality expectations
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
+    Given a file named "sample_spec.rb" with:
+    """
+      describe "something" do
+        it "does something" do
+
+          (3 + 4).should == 7
+          6.should_not == 7
+
+        end
+      end
+    """
+    When I run "stendhal sample_spec.rb"
+    Then the exit status should be 0
+    And the output should contain "1 example, 0 failures"
+
+  Scenario: identity expectations
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
+    Given a file named "sample_spec.rb" with:
+    """
+      describe "something" do
+        it "does something" do
+
+          6.should be_a(Fixnum)
+
+        end
+      end
+    """
+    When I run "stendhal sample_spec.rb"
+    Then the exit status should be 0
+    And the output should contain "1 example, 0 failures"
+
+  Scenario: predicate expectations
+    Given a directory named "stendhal_project"
+    When I cd to "stendhal_project"
+    Given a file named "sample_spec.rb" with:
+    """
+      describe "something" do
+        it "does something" do
+
+          str = "String".freeze
+          str.should be_frozen
+
+        end
+      end
+    """
+    When I run "stendhal sample_spec.rb"
+    Then the exit status should be 0
+    And the output should contain "1 example, 0 failures"

lib/stendhal.rb

@@ -1,4 +1,6 @@
-require 'stendhal/assertions'
+require 'stendhal/exceptions'
+require 'stendhal/expectations'
+require 'stendhal/matchers'
 require 'stendhal/example'
 require 'stendhal/example_group'
 

lib/stendhal/dsl.rb

@@ -1,5 +1,6 @@
 module Stendhal
   module DSL
+
     module Example
       def it(*args,&blk)
         self.add_example Stendhal::Example.new(*args,&blk)
@@ -14,6 +15,7 @@ def pending(*args,&blk)
         self.add_example Stendhal::Example.new(*args,options,&blk)
       end
     end
+
   end
 end
 

lib/stendhal/example.rb

@@ -1,6 +1,6 @@
 module Stendhal
   class Example
-    include Assertions
+    include Matchers
 
     @@examples = []
 

lib/stendhal/exceptions.rb

@@ -0,0 +1,5 @@
+module Stendhal
+  module Exceptions
+    class ExpectationNotMet < StandardError; end
+  end
+end

lib/stendhal/expectations.rb

@@ -0,0 +1,7 @@
+module Stendhal
+  module Expectations
+    class EqualityExpectation; end
+    class KindExpectation; end
+    class PredicateExpectation; end
+  end
+end

lib/stendhal/matchers.rb

@@ -0,0 +1,18 @@
+module Stendhal
+  module Matchers
+    def ==(other)
+      Stendhal::Expectations::EqualityExpectation.new(other)
+    end
+    def eq(other)
+      Stendhal::Expectations::EqualityExpectation.new(other)
+    end
+    def be_a(kind)
+      Stendhal::Expectations::KindExpectation.new(kind)
+    end
+    def method_missing(m,*args)
+      if m.to_s =~ /be_(\w+)/
+        Stendhal::Expectations::PredicateExpectation.new(($1 + '?').to_sym)
+      end
+    end
+  end
+end

spec/stendhal/matchers_spec.rb

@@ -0,0 +1,34 @@
+require 'spec_helper'
+
+class MyClass
+  include Stendhal::Matchers
+end
+
+module Stendhal
+  describe "a class with included Matchers" do
+
+    let(:object) { MyClass.new }
+
+    describe "#==" do
+      it 'creates a new equality expectation' do
+        Expectations::EqualityExpectation.should_receive(:new).with(7)
+        object == 7
+      end
+    end
+
+    describe "#be_a" do
+      it 'creates a new kind expectation' do
+        Expectations::KindExpectation.should_receive(:new).with(Fixnum)
+        object.be_a(Fixnum)
+      end
+    end
+
+    describe "#be_whatever" do
+      it 'creates a new predicate expectation' do
+        Expectations::PredicateExpectation.should_receive(:new).with(:frozen?)
+        object.be_frozen
+      end
+    end
+
+  end
+end