1 files changed, 65 insertions, 0 deletions
diff --git a/Data/BuiltIn/Libraries/middleclass/spec/instances_spec.lua b/Data/BuiltIn/Libraries/middleclass/spec/instances_spec.lua
new file mode 100644
index 0000000..d9ac52c
--- /dev/null
+++ b/Data/BuiltIn/Libraries/middleclass/spec/instances_spec.lua
@@ -0,0 +1,65 @@
+local class = require 'middleclass'
+
+describe('An instance', function()
+
+  describe('attributes', function()
+
+    local Person
+
+    before_each(function()
+      Person = class('Person')
+      function Person:initialize(name)
+        self.name = name
+      end
+    end)
+
+    it('are available in the instance after being initialized', function()
+      local bob = Person:new('bob')
+      assert.equal(bob.name, 'bob')
+    end)
+
+    it('are available in the instance after being initialized by a superclass', function()
+      local AgedPerson = class('AgedPerson', Person)
+      function AgedPerson:initialize(name, age)
+        Person.initialize(self, name)
+        self.age = age
+      end
+
+      local pete = AgedPerson:new('pete', 31)
+      assert.equal(pete.name, 'pete')
+      assert.equal(pete.age, 31)
+    end)
+
+  end)
+
+  describe('methods', function()
+
+    local A, B, a, b
+
+    before_each(function()
+      A = class('A')
+      function A:overridden() return 'foo' end
+      function A:regular() return 'regular' end
+
+      B = class('B', A)
+      function B:overridden() return 'bar' end
+
+      a = A:new()
+      b = B:new()
+    end)
+
+    it('are available for any instance', function()
+      assert.equal(a:overridden(), 'foo')
+    end)
+
+    it('are inheritable', function()
+      assert.equal(b:regular(), 'regular')
+    end)
+
+    it('are overridable', function()
+      assert.equal(b:overridden(), 'bar')
+    end)
+
+  end)
+
+end)