7 files changed, 20 insertions, 34 deletions
diff --git a/spec/ruby/fixtures/code/concurrent_require_fixture.rb b/spec/ruby/fixtures/code/concurrent_require_fixture.rb
new file mode 100644
index 0000000000..d4ce734183
--- /dev/null
+++ b/spec/ruby/fixtures/code/concurrent_require_fixture.rb
@@ -0,0 +1,4 @@
+object = ScratchPad.recorded
+thread = Thread.new { object.require(__FILE__) }
+Thread.pass until thread.stop?
+ScratchPad.record(thread)
diff --git a/spec/ruby/fixtures/code/d/load_fixture.rb.rb b/spec/ruby/fixtures/code/d/load_fixture.rb.rb
new file mode 100644
index 0000000000..7e9217729a
--- /dev/null
+++ b/spec/ruby/fixtures/code/d/load_fixture.rb.rb
@@ -0,0 +1 @@
+ScratchPad << :rbrb
diff --git a/spec/ruby/fixtures/constants.rb b/spec/ruby/fixtures/constants.rb
index 47a8e87e56..7f0b88daab 100644
--- a/spec/ruby/fixtures/constants.rb
+++ b/spec/ruby/fixtures/constants.rb
@@ -10,7 +10,7 @@
 # variety in class and module configurations, including hierarchy,
 # containment, inclusion, singletons and toplevel.
 #
-# Constants are numbered for for uniqueness. The CS_ prefix is uniformly used
+# Constants are numbered for uniqueness. The CS_ prefix is uniformly used
 # and is to minimize clashes with other toplevel constants (see e.g. ModuleA
 # which is included in Object). Constant values are symbols. A numbered suffix
 # is used to distinguish constants with the same name defined in different
@@ -44,6 +44,7 @@ module ConstantSpecs
 
   # Included in ParentA
   module ModuleB
+    LINE = __LINE__ - 1
     CS_CONST10 = :const10_9
     CS_CONST11 = :const11_2
     CS_CONST12 = :const12_1
@@ -87,7 +88,7 @@ module ConstantSpecs
   # are run.
 
   class ClassA
-    CS_CLASS_A_LINE = __LINE__ - 1
+    LINE = __LINE__ - 1
     CS_CONST10 = :const10_10
     CS_CONST10_LINE = __LINE__ - 1
     CS_CONST16 = :const16
diff --git a/spec/ruby/fixtures/enumerator/classes.rb b/spec/ruby/fixtures/enumerator/classes.rb
deleted file mode 100644
index 6f285b8efa..0000000000
--- a/spec/ruby/fixtures/enumerator/classes.rb
+++ /dev/null
@@ -1,15 +0,0 @@
-module EnumSpecs
-  class Numerous
-
-    include Enumerable
-
-    def initialize(*list)
-      @list = list.empty? ? [2, 5, 3, 6, 1, 4] : list
-    end
-
-    def each
-      @list.each { |i| yield i }
-    end
-  end
-
-end
diff --git a/spec/ruby/fixtures/io.rb b/spec/ruby/fixtures/io.rb
new file mode 100644
index 0000000000..87ebbbb2bd
--- /dev/null
+++ b/spec/ruby/fixtures/io.rb
@@ -0,0 +1,12 @@
+module IOSpec
+  def self.exhaust_write_buffer(io)
+    written = 0
+    buf = " " * 4096
+
+    while true
+      written += io.write_nonblock(buf)
+    end
+  rescue Errno::EAGAIN, Errno::EWOULDBLOCK
+    written
+  end
+end
diff --git a/spec/ruby/fixtures/math/common.rb b/spec/ruby/fixtures/math/common.rb
deleted file mode 100644
index 024732fa7a..0000000000
--- a/spec/ruby/fixtures/math/common.rb
+++ /dev/null
@@ -1,3 +0,0 @@
-class IncludesMath
-  include Math
-end
diff --git a/spec/ruby/fixtures/rational.rb b/spec/ruby/fixtures/rational.rb
deleted file mode 100644
index 844d7f9820..0000000000
--- a/spec/ruby/fixtures/rational.rb
+++ /dev/null
@@ -1,14 +0,0 @@
-module RationalSpecs
-  class SubNumeric < Numeric
-    def initialize(value)
-      @value = Rational(value)
-    end
-
-    def to_r
-      @value
-    end
-  end
-
-  class CoerceError < StandardError
-  end
-end