Merge pull request #131 from trayo/130_move_getting_started

Moves the 'file not found' and getting_started from hamming and updates the getting_started.md

Author: kytrinyx

hello-world/GETTING_STARTED.md

@@ -0,0 +1,117 @@
+# Getting Started
+
+These exercises lean on Test-Driven Development (TDD), but they're not an
+exact match.
+
+The following steps assume that you are in the same directory as the test
+suite.
+
+You must have the `minitest` gem installed:
+
+    $ gem install minitest
+
+## Step 1
+
+Run the test suite. It's written using the Minitest framework, and can be
+run with ruby:
+
+    $ ruby hello_world_test.rb
+
+This will fail, complaining that there is no file called `hello_world`.
+
+To fix the error create an empty file called `hello_world.rb` in the same
+directory as the `hello_world_test.rb` file.
+
+## Step 2
+
+Run the test again. It will give you a new error.
+
+    1) Error:
+    HelloWorldTest#test_no_name:
+    NameError: uninitialized constant HelloWorldTest::HelloWorld
+      hello-world/hello_world_test.rb:5:in `test_no_name'
+
+Within the first test, we are referencing a constant named `HelloWorld` when
+we say `HelloWorld.hello`. When Ruby sees a capitalized name like
+`HelloWorld`, it looks it up in a big huge list of all the constants it knows about,
+to see what it points to. It could point to anything, and often in Ruby we have
+constants that point to definitions of classes or modules.
+
+When it looks `HelloWorld` up in it's list, it doesn't find anything, so we need
+to make one.
+
+There are several ways that this error message can be made to go
+away, one of which is to define a `HelloWorld` class.
+
+Open up the hello_world.rb file and add the following code:
+
+    class HelloWorld
+    end
+
+## Step 3
+
+Run the test again.
+
+    1) Error:
+    HelloWorldTest#test_no_name:
+    NoMethodError: undefined method `hello' for HelloWorld:Class
+        hello_world_test.rb:5:in `test_no_name'
+
+This time we have a `HelloWorld`, but we're trying tell it to `hello`, and
+`HelloWorld` doesn't understand that message.
+
+Open up hello_world.rb and add a method definition inside the class:
+
+    class HelloWorld
+      def self.hello
+      end
+    end
+
+## Step 4
+
+Run the test again.
+
+    1) Failure:
+    HelloWorldTest#test_no_name [hello_world_test.rb:11]:
+    When given no name, we should greet the world!.
+    Expected: "Hello, world!"
+      Actual: nil
+
+Up until now we've been getting errors, this time we get a failure.
+
+An error means that Ruby cannot even run properly because of things like missing
+files or syntax errors, or referring to things that don't exist.
+
+A failure is different. A failure is when Ruby is running just fine
+and the test is expecting one outcome, but getting another.
+
+The test is expecting the `hello` method to return the string `"Hello, world!"`. The easiest way
+to make it pass, is to simply stick the string `"Hello, world!"` inside the method definition.
+
+## Step 6
+
+Run the test again.
+
+If it fails you're going to need to read the error message carefully to figure
+out what went wrong, and then try again.
+
+If it passes, then you're ready to move to the next step.
+
+Open the hello_world_test.rb file, and find the word "skip". All but the first test
+start with "skip", which tells Minitest to ignore the test. This is so that
+you don't have to deal with all the failures at once.
+
+To activate the next test, delete the "skip", and run the test suite again.
+
+## Wash, Rinse, Repeat
+
+Delete one "skip" at a time, and make each test pass before you move to the
+next one.
+
+## Submit
+
+When everything is passing, you can submit your code with the following
+command:
+
+    $ exercism submit hello_world.rb
+

hello-world/hello_world_test.rb

@@ -1,19 +1,52 @@
 require 'minitest/autorun'
-require_relative 'hello_world'
-class HelloWorldTest < Minitest::Test
-  def test_no_strange_name
-    assert_equal 'Hello, !', HelloWorld.hello(''), 'When giving an empty string, it is strange, but should have a space and punctuation'
-  end
+begin
+  require_relative 'hello_world'
+rescue LoadError => e
+  puts "\n\n#{e.backtrace.first} #{e.message}"
+  puts DATA.read
+  exit 1
+end
 
+class HelloWorldTest < Minitest::Test
   def test_no_name
     assert_equal 'Hello, world!', HelloWorld.hello, 'When giving no name, we should greet the world!'
   end
 
   def test_sample_name
+    skip
     assert_equal 'Hello, Alice!', HelloWorld.hello('Alice'), 'When giving "Alice" we should greet Alice!'
   end
 
   def test_other_sample_name
+    skip
     assert_equal 'Hello, Bob!', HelloWorld.hello('Bob'), 'When giving "Bob" we should greet Bob!'
   end
+
+  def test_no_strange_name
+    skip
+    assert_equal 'Hello, !', HelloWorld.hello(''), 'When giving an empty string, it is strange, but should have a space and punctuation'
+  end
 end
+
+__END__
+
+*****************************************************
+You got an error, which is exactly as it should be.
+This is the first step in the Test-Driven Development
+(TDD) process.
+
+The most important part of the error is
+
+      cannot load such file
+
+It's looking for a file named hello_world.rb that doesn't
+exist yet.
+
+To fix the error, create an empty file named hello_world.rb
+in the same directory as the hello_world_test.rb file.
+
+Then run the test again.
+
+For more guidance as you work on this exercise, see
+GETTING_STARTED.md.
+*****************************************************