Move helper methods and classes to their own directory

spec/helpers/failing_example.cr

@@ -0,0 +1,22 @@
+# Example that always fails.
+class FailingExample < Spectator::RunnableExample
+  # Dummy description.
+  def what
+    "FAIL"
+  end
+
+  # Run the example that always fails.
+  private def run_instance
+    report_results(0, 1)
+  end
+
+  # Creates a failing example.
+  def self.create
+    hooks = Spectator::ExampleHooks.empty
+    group = Spectator::RootExampleGroup.new(hooks)
+    values = Spectator::Internals::SampleValues.empty
+    new(group, values).tap do |example|
+      group.children = [example.as(Spectator::ExampleComponent)]
+    end
+  end
+end