1 files changed, 12 insertions, 0 deletions
diff --git a/spec/mspec/lib/mspec/matchers/have_instance_variable.rb b/spec/mspec/lib/mspec/matchers/have_instance_variable.rb
new file mode 100644
index 0000000000..e83eb9408c
--- /dev/null
+++ b/spec/mspec/lib/mspec/matchers/have_instance_variable.rb
@@ -0,0 +1,12 @@
+require 'mspec/matchers/variable'
+
+class HaveInstanceVariableMatcher < VariableMatcher
+  self.variables_method = :instance_variables
+  self.description      = 'instance variable'
+end
+
+class Object
+  def have_instance_variable(variable)
+    HaveInstanceVariableMatcher.new(variable)
+  end
+end
+\ No newline at end of file