Experimenting with auto-mocking methods

src/spectator/dsl/mock_dsl.cr

@@ -0,0 +1,5 @@
+module Spectator::DSL
+  module MockDSL
+    
+  end
+end

src/spectator/dsl/structure_dsl.cr

@@ -1419,6 +1419,24 @@ module Spectator::DSL
       end
     end
 
+    macro mock(type)
+      {% real_type = type.resolve %}
+      {% if real_type < ::Reference %}
+        class ::{{real_type.name.id}}
+          include ::Spectator::Mock
+        end
+      {% elsif real_type < ::Value %}
+        struct ::{{real_type.name.id}}
+          include ::Spectator::Mock
+        end
+      {% else %}
+        module ::{{real_type.name.id}}
+          include ::Spectator::Mock
+        end
+      {% end %}
+      {% debug %}
+    end
+
     # Creates an example, or a test case.
     # The *what* argument describes "what" is being tested or asserted.
     # The block contains the code to run the test.

src/spectator/includes.cr

@@ -30,6 +30,8 @@ require "./example_group"
 require "./nested_example_group"
 require "./root_example_group"
 
+require "./mock"
+
 require "./config"
 require "./config_builder"
 require "./config_source"

src/spectator/mock.cr

@@ -0,0 +1,30 @@
+module Spectator
+  module Mock
+    macro included
+      {% for meth in @type.methods %}
+      {% if meth.visibility != :public %}{{meth.visibility.id}} {% end %}def {{meth.name.id}}(
+        {% for arg, i in meth.args %}
+          {% if meth.splat_index && i == meth.splat_index %}
+            *{{arg}}{% if i + (meth.accepts_block? ? 0 : 1) < meth.args.size %},{% end %}
+          {% else %}
+            {{arg}}{% if i + (meth.accepts_block? ? 0 : 1) < meth.args.size %},{% end %}
+          {% end %}
+        {% end %}
+        {% if meth.accepts_block? %}&{% if meth.block_arg %}{{meth.block_arg}}{% else %}__spec_block{% end %}{% end %}
+        ){% if meth.return_type %} : {{meth.return_type}}{% end %}
+        previous_def(
+          {% for arg, i in meth.args %}
+            {% if !meth.splat_index || i < meth.splat_index %}
+              {{arg.name.id}}{% if i + (meth.accepts_block? ? 0 : 1) < meth.args.size %},{% end %}
+            {% elsif meth.splat_index && i > meth.splat_index %}
+              {{arg.name.id}}: {{arg.name}}{% if i + (meth.accepts_block? ? 0 : 1) < meth.args.size %},{% end %}
+            {% end %}
+          {% end %}
+          {% if meth.accepts_block? %}&{% if meth.block_arg %}{{meth.block_arg}}{% else %}__spec_block{% end %}{% end %}
+        )
+      end
+      {% end %}
+      {% debug %}
+    end
+  end
+end