Current progress

koans/about_array_assignment.rb

@@ -0,0 +1,51 @@
+require File.expand_path(File.dirname(__FILE__) + '/neo')
+
+class AboutArrayAssignment < Neo::Koan
+  def test_non_parallel_assignment
+    names = ["John", "Smith"]
+    assert_equal ["John", "Smith"], names
+  end
+
+  def test_parallel_assignments
+    first_name, last_name = ["John", "Smith"]
+    assert_equal "John", first_name
+    assert_equal "Smith", last_name
+  end
+
+  def test_parallel_assignments_with_extra_values
+    first_name, last_name = ["John", "Smith", "III"]
+    assert_equal "John", first_name
+    assert_equal "Smith", last_name
+  end
+
+  def test_parallel_assignments_with_splat_operator
+    first_name, *last_name = ["John", "Smith", "III"]
+    assert_equal "John", first_name
+    assert_equal ["Smith", "III"], last_name
+  end
+
+  def test_parallel_assignments_with_too_few_values
+    first_name, last_name = ["Cher"]
+    assert_equal "Cher", first_name
+    assert_equal nil, last_name
+  end
+
+  def test_parallel_assignments_with_subarrays
+    first_name, last_name = [["Willie", "Rae"], "Johnson"]
+    assert_equal ["Willie", "Rae"], first_name
+    assert_equal "Johnson", last_name
+  end
+
+  def test_parallel_assignment_with_one_variable
+    first_name, = ["John", "Smith"]
+    assert_equal "John", first_name
+  end
+
+  def test_swapping_with_parallel_assignment
+    first_name = "Roy"
+    last_name = "Rob"
+    first_name, last_name = last_name, first_name
+    assert_equal "Rob", first_name
+    assert_equal "Roy", last_name
+  end
+end