Move top-level types into spectator/ sub-directory

src/spectator/context.cr

@@ -1,4 +1,10 @@
-require "../spectator_context"
+# Base class that all test cases run in.
+# This type is used to store all test case contexts as a single type.
+# The instance must be downcast to the correct type before calling a context method.
+# This type is intentionally outside the `Spectator` module.
+# The reason for this is to prevent name collision when using the DSL to define a spec.
+abstract class SpectatorContext
+end
 
 module Spectator
   # Base class that all test cases run in.

src/spectator/includes.cr

@@ -8,3 +8,4 @@ require "./command_line_arguments_config_source"
 require "./config_builder"
 require "./config"
 require "./dsl"
+require "./test_context"

src/spectator/test_context.cr

@@ -0,0 +1,26 @@
+require "./context"
+require "./dsl"
+
+# Class used as the base for all specs using the DSL.
+# It adds methods and macros necessary to use the DSL from the spec.
+# This type is intentionally outside the `Spectator` module.
+# The reason for this is to prevent name collision when using the DSL to define a spec.
+class SpectatorTestContext < SpectatorContext
+  include ::Spectator::DSL::Examples
+  include ::Spectator::DSL::Groups
+  include ::Spectator::DSL::Hooks
+
+  # Initial implicit subject for tests.
+  # This method should be overridden by example groups when an object is described.
+  private def _spectator_implicit_subject
+    nil
+  end
+
+  # Initial subject for tests.
+  # Returns the implicit subject.
+  # This method should be overridden when an explicit subject is defined by the DSL.
+  # TODO: Subject needs to be cached.
+  private def subject
+    _spectator_implicit_subject
+  end
+end