14 files changed, 244 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/fixtures/class.rb b/spec/ruby/optional/capi/fixtures/class.rb
new file mode 100644
index 0000000000..b463e3b4c3
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/class.rb
@@ -0,0 +1,104 @@
+class CApiClassSpecs
+  module M
+    def included?
+      true
+    end
+  end
+
+  class Alloc
+    attr_reader :initialized
+    attr_reader :arguments
+
+    def initialize(*args)
+      @initialized = true
+      @arguments   = args
+    end
+  end
+
+  class KeywordAlloc
+    attr_reader :initialized, :args, :kwargs
+
+    def initialize(*args, **kwargs)
+      @initialized = true
+      @args = args
+      @kwargs = kwargs
+    end
+  end
+
+  class Attr
+    def initialize
+      @foo, @bar, @baz = 1, 2, 3
+    end
+  end
+
+  class CVars
+    @@cvar  = :cvar
+    @c_ivar = :c_ivar
+
+    def new_cv
+      @@new_cv if defined? @@new_cv
+    end
+
+    def new_cvar
+      @@new_cvar if defined? @@new_cvar
+    end
+
+    def rbdcv_cvar
+      @@rbdcv_cvar if defined? @@rbdcv_cvar
+    end
+  end
+
+  class Inherited
+    def self.inherited(klass)
+      klass
+    end
+  end
+
+  class NewClass
+    def self.inherited(klass)
+      raise "#{name}.inherited called"
+    end
+  end
+
+  class Super
+    def call_super_method
+      :super_method
+    end
+  end
+
+  class Sub < Super
+    def call_super_method
+      :subclass_method
+    end
+  end
+
+  class SubM < Super
+    include M
+  end
+
+  class SubSub < Sub
+    def call_super_method
+      :subsubclass_method
+    end
+  end
+
+  class SuperSelf
+    def call_super_method
+      self
+    end
+  end
+
+  class SubSelf < SuperSelf
+  end
+
+  class A
+    C = 1
+    autoload :D, File.expand_path('../path_to_class.rb', __FILE__)
+
+    class B
+    end
+
+    module M
+    end
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/const_get.rb b/spec/ruby/optional/capi/fixtures/const_get.rb
new file mode 100644
index 0000000000..b261a07f7e
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/const_get.rb
@@ -0,0 +1,5 @@
+class CApiModuleSpecs
+  class A
+    D = 123
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/const_get_at.rb b/spec/ruby/optional/capi/fixtures/const_get_at.rb
new file mode 100644
index 0000000000..700b570607
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/const_get_at.rb
@@ -0,0 +1,5 @@
+class CApiModuleSpecs
+  class A
+    B = 123
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/const_get_from.rb b/spec/ruby/optional/capi/fixtures/const_get_from.rb
new file mode 100644
index 0000000000..9e297daba7
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/const_get_from.rb
@@ -0,0 +1,5 @@
+class CApiModuleSpecs
+  class A
+    C = 123
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/const_get_object.rb b/spec/ruby/optional/capi/fixtures/const_get_object.rb
new file mode 100644
index 0000000000..03d9365a3e
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/const_get_object.rb
@@ -0,0 +1,3 @@
+class Object
+  CApiModuleSpecsAutoload = 123
+end
diff --git a/spec/ruby/optional/capi/fixtures/encoding.rb b/spec/ruby/optional/capi/fixtures/encoding.rb
new file mode 100644
index 0000000000..0858807aa0
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/encoding.rb
@@ -0,0 +1,3 @@
+class CApiEncodingSpecs
+  class S < String; end
+end
diff --git a/spec/ruby/optional/capi/fixtures/foo.rb b/spec/ruby/optional/capi/fixtures/foo.rb
new file mode 100644
index 0000000000..bc4e8f3f7d
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/foo.rb
@@ -0,0 +1 @@
+$foo = 7
diff --git a/spec/ruby/optional/capi/fixtures/kernel.rb b/spec/ruby/optional/capi/fixtures/kernel.rb
new file mode 100644
index 0000000000..d3fc7c57e8
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/kernel.rb
@@ -0,0 +1,19 @@
+class CApiKernelSpecs
+  class ClassWithPublicMethod
+    def public_method(*, **)
+      :public
+    end
+  end
+
+  class ClassWithPrivateMethod
+    private def private_method(*, **)
+      :private
+    end
+  end
+
+  class ClassWithProtectedMethod
+    protected def protected_method(*, **)
+      :protected
+    end
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/module.rb b/spec/ruby/optional/capi/fixtures/module.rb
new file mode 100644
index 0000000000..aac8bfbfb3
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/module.rb
@@ -0,0 +1,39 @@
+class Object
+  autoload :CApiModuleSpecsAutoload, File.expand_path('../const_get_object.rb', __FILE__)
+
+  module CApiModuleSpecsModuleA
+    X = 1
+  end
+end
+
+class CApiModuleSpecs
+  class A
+    autoload :B, File.expand_path('../const_get_at.rb', __FILE__)
+    autoload :C, File.expand_path('../const_get_from.rb', __FILE__)
+    autoload :D, File.expand_path('../const_get.rb', __FILE__)
+
+    X = 1
+    Q = 1
+    R = 2
+    S = 3
+    T = 5
+  end
+
+  class B < A
+    Y = 2
+  end
+
+  class C
+    Z = 3
+  end
+
+  module M
+  end
+
+  class Super
+  end
+
+  autoload :ModuleUnderAutoload, "#{object_path}/module_under_autoload_spec"
+  autoload :RubyUnderAutoload, File.expand_path('../module_autoload', __FILE__)
+
+end
diff --git a/spec/ruby/optional/capi/fixtures/module_autoload.rb b/spec/ruby/optional/capi/fixtures/module_autoload.rb
new file mode 100644
index 0000000000..8130a24421
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/module_autoload.rb
@@ -0,0 +1,4 @@
+class CApiModuleSpecs
+  module RubyUnderAutoload
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/object.rb b/spec/ruby/optional/capi/fixtures/object.rb
new file mode 100644
index 0000000000..a59f2309d8
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/object.rb
@@ -0,0 +1,29 @@
+class CApiObjectSpecs
+  class IVars
+    def initialize
+      @a = 3
+      @b = 7
+      @c = 4
+    end
+
+    def self.set_class_variables
+      @@foo = :a
+      @@bar = :b
+      @@baz = :c
+    end
+  end
+
+  module MVars
+    @@mvar = :foo
+    @@mvar2 = :bar
+
+    @ivar = :baz
+  end
+
+  module CVars
+    @@cvar = :foo
+    @@cvar2 = :bar
+
+    @ivar = :baz
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/path_to_class.rb b/spec/ruby/optional/capi/fixtures/path_to_class.rb
new file mode 100644
index 0000000000..acd577ff24
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/path_to_class.rb
@@ -0,0 +1,6 @@
+class CApiClassSpecs
+  class A
+    module D
+    end
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/proc.rb b/spec/ruby/optional/capi/fixtures/proc.rb
new file mode 100644
index 0000000000..fbe37312da
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/proc.rb
@@ -0,0 +1,20 @@
+class CApiProcSpecs
+  def call_nothing
+  end
+
+  def call_Proc_new
+    Proc.new
+  end
+
+  def call_block_given?
+    block_given?
+  end
+
+  def call_rb_Proc_new
+    rb_Proc_new(0)
+  end
+
+  def call_rb_Proc_new_with_block
+    rb_Proc_new(0) { :calling_with_block }
+  end
+end
diff --git a/spec/ruby/optional/capi/fixtures/read.txt b/spec/ruby/optional/capi/fixtures/read.txt
new file mode 100644
index 0000000000..f7065a35d0
--- /dev/null
+++ b/spec/ruby/optional/capi/fixtures/read.txt
@@ -0,0 +1 @@
+fixture file contents to test read() with RSTRING_PTR