Update HelloWorld to use the expect features.

Author: elmar-hinz

HelloWorld/challenge.py

@@ -43,10 +43,24 @@ class HelloWorldChallenge(Challenge):
         5
         WorldHello
     '''
+
     """This is the input sample. It can be overwritten by injection.
 
         * first line: integer
         * second line: word
+        
+        It is used by the --klass option of the challenge runner.
+        It can be used for unit tests.
+        
+        prompt> challenge HelloWorld/ --klass
+        Hello World
+    """
+
+    expect = 'Hello World'
+
+    """This is the expected output for the sample. 
+    
+        It can be used for unit tests.
     """
 
     def build(self):

HelloWorld/test.py

@@ -4,20 +4,27 @@
 
 
 class HelloWorldTest(unittest.TestCase):
+
     def setUp(self):
         self.challenge = HelloWorldChallenge()
 
     def test__init__(self):
         self.assertIsInstance(self.challenge, HelloWorldChallenge)
+        self.assertIn('WorldHello', self.challenge.sample)
+        self.assertIn('Hello World', self.challenge.expect)
 
     def test_build(self):
-        self.challenge.lines = ['5', 'xxx']
+        self.challenge.read()
         self.challenge.build()
         self.assertEqual(5, self.challenge.model.split_at)
-        self.assertEqual('xxx', self.challenge.model.word)
+        self.assertEqual('WorldHello', self.challenge.model.word)
 
     def test_calc(self):
         self.challenge.model.split_at = 5
         self.challenge.model.word = 'honeymoon'
         self.challenge.calc()
         self.assertEqual('moon honey', self.challenge.result)
+
+    def test_full_integration(self):
+        self.challenge.main()
+        self.assertEqual(self.challenge.expectation(), self.challenge.output)

README.rst

@@ -62,6 +62,10 @@ Features
     * Output formatted result on the command line
     * Writing `sample.txt` and matching `result.txt` into the challenges directory
     * Running the unit test case of a challenge
+    * Reading lines with integers
+    * Reading lines with floats
+    * Reading lines with words
+    * Reading fasta input
 
 Directory layout
 ================
@@ -305,4 +309,3 @@ alternatively as `stepik` or `rosalind`.
 
     prompt> rosalind --version
     rosalind 0.6.0
-