Fixup extending/* and delete associated tests.

doc/extending/cop.txt

@@ -253,8 +253,10 @@ We will be defining C code for the multiplication Op on doubles.
 
 **c_code**
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
+.. testsetup::
+
+   from theano import Op
+   mul = Op()
 
 .. testcode::
 
@@ -298,10 +300,6 @@ As before, I tried to organize the code in order to minimize
 repetition. You can check that mul produces the same C code in this
 version that it produces in the code I gave above.
 
-
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 .. testcode::
 
    from theano import gof

doc/extending/ctype.txt

@@ -159,9 +159,7 @@ Defining the methods
 .. testsetup:: 
 
     import theano
-
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
+    double = theano.Type()
 
 **c_declare**
 
@@ -193,9 +191,6 @@ your Type. If you wish people to develop operations that make use of
 it, it's best to publish it somewhere.
 
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 **c_init**
 
 .. testcode::
@@ -222,9 +217,6 @@ you should only assume that either ``c_init`` or ``c_extract`` has been
 called, without knowing for sure which of the two.
 
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 **c_extract**
 
 .. testcode::
@@ -261,9 +253,6 @@ using the ``PyFloat_AsDouble`` function (yet again provided by CPython's C
 API) and we put it in our double variable that we declared previously.
 
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 **c_sync**
 
 .. testcode::
@@ -323,9 +312,6 @@ than sorry.
    do *NOT* decrease its reference count!
 
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 **c_cleanup**
 
 .. testcode::
@@ -374,13 +360,7 @@ depends on the the relationship between Python and C with respect to
 that Variable. For instance, imagine you define the following function
 and call it:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
-.. testcode::
-   
-   from theano import function
-   from theano.tensor import double
+.. code-block:: python
    
    x, y, z = double('x'), double('y'), double('z')
    a = add(x, y)
@@ -463,9 +443,6 @@ multiplication block.
 Final version
 =============
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 .. testcode::
 
    from theano import gof
@@ -530,7 +507,7 @@ know how to generate C code.
 
 You can implement c_code for this op. You register it like this:
 
-.. testcode::
+.. code-block:: python
 
    theano.compile.ops.register_deep_copy_op_c_code(YOUR_TYPE_CLASS, THE_C_CODE, version=())
 
@@ -552,7 +529,7 @@ ViewOp to generate C code when working with this type, as
 otherwise it will use Python code instead. This is achieved by
 calling:
 
-.. testcode::
+.. code-block:: python
 
    theano.compile.ops.register_view_op_c_code(YOUR_TYPE_CLASS, THE_C_CODE, version=())
 
@@ -572,7 +549,7 @@ Theano Variable that has a shape attribute (Shape_i returns only one of
 the elements of the shape).
 
 
-.. testcode::
+.. code-block:: python
 
    theano.compile.ops.register_shape_c_code(YOUR_TYPE_CLASS, THE_C_CODE, version=())
    theano.compile.ops.register_shape_i_c_code(YOUR_TYPE_CLASS, THE_C_CODE, CHECK_INPUT, version=())

doc/extending/fibby.txt

@@ -26,9 +26,6 @@ clarity.  For example, when you write C code that assumes memory is contiguous,
 you should check the strides and alignment.
 
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_fibby.test_fibby_1
-
 .. testcode::
 
    import theano
@@ -145,7 +142,7 @@ the correct size for the output. This is essentially simulating the line
 ``y = x.copy()``.
 
 
-.. testcode::
+.. code-block:: c
 
     Py_XDECREF(%(y)s);
     %(y)s = (PyArrayObject*)PyArray_FromArray(
@@ -249,7 +246,6 @@ Here is some code to test that the optimization is applied only when needed.
    # Test it does not apply when not needed
    x = T.dvector()
    f = function([x], fibby(x))
-        #theano.printing.debugprint(f)
 
    # We call the function to make sure it runs.
    # If you run in DebugMode, it will compare the C and Python outputs.
@@ -260,7 +256,6 @@ Here is some code to test that the optimization is applied only when needed.
 
    # Test that the optimization gets applied.
    f_zero = function([], fibby(T.zeros([5])))
-        #theano.printing.debugprint(f_zero)
 
    # If you run in DebugMode, it will compare the output before
    # and after the optimization.

doc/extending/graphstructures.txt

@@ -71,9 +71,6 @@ without any shortcuts, that will make the graph construction very explicit.
 
 This is what you would normally type:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_graphstructures.test_graphstructures_1
-
 .. testcode::
 
    # create 3 Variables with owner = None
@@ -90,43 +87,40 @@ This is what you would normally type:
 
 This is what you would type to build the graph explicitly:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_graphstructures.test_graphstructures_1
-
 .. testcode::
 
-    from theano.tensor import add, mul, Apply, Variable, TensorType
+   from theano.tensor import add, mul, Apply, Variable, Constant, TensorType
 
    # Instantiate a type that represents a matrix of doubles
-    float64_matrix = TensorType(dtype = 'float64',              # double
-                                broadcastable = (False, False)) # matrix
+   float64_matrix = TensorType(dtype='float64',              # double
+                               broadcastable=(False, False)) # matrix
 
     # We make the Variable instances we need.
-    x = Variable(type = float64_matrix, name = 'x')
-    y = Variable(type = float64_matrix, name = 'y')
-    z = Variable(type = float64_matrix, name = 'z')
+   x = Variable(type=float64_matrix, name='x')
+   y = Variable(type=float64_matrix, name='y')
+   z = Variable(type=float64_matrix, name='z')
 
    # This is the Variable that we want to symbolically represents y*z
-    mul_variable = Variable(type = float64_matrix)
+   mul_variable = Variable(type=float64_matrix)
    assert mul_variable.owner is None
 
    # Instantiate a symbolic multiplication
-    node_mul = Apply(op = mul,
-                     inputs = [y, z],
-                     outputs = [mul_variable])
+   node_mul = Apply(op=mul,
+                    inputs=[y, z],
+                    outputs=[mul_variable])
    # Fields 'owner' and 'index' are set by Apply
    assert mul_variable.owner is node_mul
    # 'index' is the position of mul_variable in mode_mul's outputs
    assert mul_variable.index == 0
 
    # This is the Variable that we want to symbolically represents x+(y*z)
-    add_variable = Variable(type = float64_matrix)
+   add_variable = Variable(type=float64_matrix)
    assert add_variable.owner is None
 
    # Instantiate a symbolic addition
-    node_add = Apply(op = add,
-                     inputs = [x, mul_variable],
-                     outputs = [add_variable])
+   node_add = Apply(op=add,
+                    inputs=[x, mul_variable],
+                    outputs=[add_variable])
    # Fields 'owner' and 'index' are set by Apply
    assert add_variable.owner is node_add
    assert add_variable.index == 0
@@ -163,14 +157,13 @@ builds the following graph:
 
 .. testcode::
 
-    node = Apply(op = add,
-                 inputs = [Variable(type = dscalar, name = 'x'),
-                           Constant(type = lscalar, data = 1)],
-                 outputs = [Variable(type = dscalar)])
+   node = Apply(op=add,
+                inputs=[Variable(type=T.dscalar, name='x'),
+                        Constant(type=T.lscalar, data=1)],
+                outputs=[Variable(type=T.dscalar)])
    e = node.outputs[0]
 
 
-
 Graph Structures
 ================
 
@@ -402,39 +395,34 @@ In both types of pairs, the second element of the tuple is an index,
 such that: ``var.clients[*][0].inputs[index]`` or
 ``fgraph.outputs[index]`` is that variable.
 
-.. testcode::
 
-    import theano
-    v = theano.tensor.vector()
-    f = theano.function([v], (v+1).sum())
-    theano.printing.debugprint(f)
-    # Sorted list of all nodes in the compiled graph.
-    topo = f.maker.fgraph.toposort()
-    topo[0].outputs[0].clients
-    # [(Sum(Elemwise{add,no_inplace}.0), 0)]
-    topo[1].outputs[0].clients
-    # [('output', 0)]
-
-    # An internal variable
-    var = topo[0].outputs[0]
-    client = var.clients[0]
-    client
-    # (Sum(Elemwise{add,no_inplace}.0), 0)
-    type(client[0])
-    # <class 'theano.gof.graph.Apply'>
-    assert client[0].inputs[client[1]] is var
-
-    # An output of the graph
-    var = topo[1].outputs[0]
-    client = var.clients[0]
-    client
-    # ('output', 0)
-    assert f.maker.fgraph.outputs[client[1]] is var
-
-.. testoutput::
-
-    Sum{acc_dtype=float64} [@A] ''   1
+>>> import theano
+>>> v = theano.tensor.vector()
+>>> f = theano.function([v], (v+1).sum())
+>>> theano.printing.debugprint(f)
+Sum{acc_dtype=float64} [@A] ''   1
  |Elemwise{add,no_inplace} [@B] ''   0
    |TensorConstant{(1,) of 1.0} [@C]
    |<TensorType(float64, vector)> [@D]
-   
+>>> # Sorted list of all nodes in the compiled graph.
\ No newline at end of file
+>>> topo = f.maker.fgraph.toposort()
+>>> topo[0].outputs[0].clients
+[(Sum{acc_dtype=float64}(Elemwise{add,no_inplace}.0), 0)]
+>>> topo[1].outputs[0].clients
+[('output', 0)]
+
+>>> # An internal variable
+>>> var = topo[0].outputs[0]
+>>> client = var.clients[0]
+>>> client
+(Sum{acc_dtype=float64}(Elemwise{add,no_inplace}.0), 0)
+>>> type(client[0])
+<class 'theano.gof.graph.Apply'>
+>>> assert client[0].inputs[client[1]] is var
+
+>>> # An output of the graph
+>>> var = topo[1].outputs[0]
+>>> client = var.clients[0]
+>>> client
+('output', 0)
+>>> assert f.maker.fgraph.outputs[client[1]] is var

doc/extending/inplace.txt

@@ -55,6 +55,11 @@ Suppose you had an Op which took ``x`` as input and returned
 purpose, you would set the ``view_map`` field as follows:
 
 
+.. testsetup::
+
+   from theano import Op
+   myop = Op()
+
 .. testcode::
 
    myop.view_map = {0: [0]}

doc/extending/op.txt

@@ -541,9 +541,6 @@ multiplication Op could take an arbitrary number of arguments.
 
 First, we'll instantiate a ``mul`` Op:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
-
 .. testcode:: mul
 
    from theano import gof
@@ -558,9 +555,6 @@ two.  This function ensures that both inputs have the ``double`` type.
 Since multiplying two doubles yields a double, this function makes an
 Apply node with an output Variable of type ``double``.
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
-
 .. testcode:: mul
 
    def make_node(x, y):
@@ -594,8 +588,6 @@ built-in type ``float`` because this is the type that ``double.filter()``
 will always return, per our own definition. ``output_storage`` will
 contain a single storage cell for the multiplication's variable.
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
 .. testcode:: mul
 
    def perform(node, inputs, output_storage):
@@ -626,31 +618,32 @@ Here, ``z`` is a list of one element. By default, ``z == [None]``.
 Trying out our new Op
 =====================
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
-
 In the following code, we use our new Op:
 
->>> import theano
->>> x, y = double('x'), double('y')
->>> z = mul(x, y)
->>> f = theano.function([x, y], z)
->>> f(5, 6)
-30.0
->>> f(5.6, 6.7)
-37.519999999999996
+.. doctest:: mul
+
+   >>> import theano
+   >>> x, y = double('x'), double('y')
+   >>> z = mul(x, y)
+   >>> f = theano.function([x, y], z)
+   >>> f(5, 6)
+   30.0
+   >>> f(5.6, 6.7)
+   37.519999999999996
 
 Note that there is an implicit call to
 ``double.filter()`` on each argument, so if we give integers as inputs
 they are magically cast to the right type. Now, what if we try this?
 
->>> x = double('x')
->>> z = mul(x, 2)
-Traceback (most recent call last):
+.. doctest:: mul
+
+   >>> x = double('x')
+   >>> z = mul(x, 2)
+   Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "/u/breuleuo/hg/theano/theano/gof/op.py", line 207, in __call__
      File "<stdin>", line 2, in make_node
-AttributeError: 'int' object has no attribute 'type'
+   AttributeError: 'int' object has no attribute 'type'
 
 Automatic Constant Wrapping
 ---------------------------
@@ -659,8 +652,6 @@ Well, OK. We'd like our Op to be a bit more flexible. This can be done
 by modifying ``make_node`` to accept Python ``int`` or ``float`` as
 ``x`` and/or ``y``:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
 .. testcode:: mul
 
    def make_node(x, y):
@@ -677,16 +668,15 @@ Whenever we pass a Python int or float instead of a Variable as ``x`` or
 ``y``, ``make_node`` will convert it to :ref:`constant` for us. ``gof.Constant``
 is a :ref:`variable` we statically know the value of.
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_op.test_op_1
+.. doctest:: mul
 
->>> x = double('x')
->>> z = mul(x, 2)
->>> f = theano.function([x], z)
->>> f(10)
-20.0
->>> f(3.4)
-6.7999999999999998
+   >>> x = double('x')
+   >>> z = mul(x, 2)
+   >>> f = theano.function([x], z)
+   >>> f(10)
+   20.0
+   >>> f(3.4)
+   6.8
 
 Now the code works the way we want it to.
 
@@ -707,9 +697,6 @@ operations ``add``, ``sub`` and ``div``, code for ``make_node`` can be
 shared between these Ops. Here is revised implementation of these four
 arithmetic operators:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
-
 .. testcode::
 
    from theano import gof

doc/extending/optimization.txt

@@ -119,9 +119,6 @@ Global optimization
 Here is the code for a global optimization implementing the
 simplification described above:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 .. testcode::
 
    import theano
@@ -182,9 +179,6 @@ pointer-following game you need to get ahold of the nodes of interest
 for the simplification (``x``, ``y``, ``z``, ``a``, ``b``, etc.).
 
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 Test time:
 
 >>> from theano.scalar import float64, add, mul, true_div
@@ -222,8 +216,8 @@ computation, using the ``merge_optimizer`` defined in
 ``theano.gof.opt``.
 
 >>> from theano.gof.opt import merge_optimizer
->>> merge_optimizer.optimize(e)
-(0, 0.0001430511474609375, None, None, {}, 1, 0)
+>>> merge_optimizer.optimize(e)  # doctest: +ELLIPSIS
+(0, ..., None, None, {}, 1, 0)
 >>> e
 [true_div(mul(*1 -> add(y, z), x), *1)]
 >>> simplify.optimize(e)
@@ -254,9 +248,6 @@ Local optimization
 
 The local version of the above code would be the following:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 
 .. testcode::
 
@@ -295,9 +286,6 @@ with a :ref:`navigator`. Basically, a :ref:`navigator` is a global
 optimizer that loops through all nodes in the graph (or a well-defined
 subset of them) and applies one or several local optimizers on them.
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_2
-
 >>> x = float64('x')
 >>> y = float64('y')
 >>> z = float64('z')
@@ -307,7 +295,7 @@ subset of them) and applies one or several local optimizers on them.
 [add(z, mul(true_div(mul(y, x), y), true_div(z, x)))]
 >>> simplify = gof.TopoOptimizer(local_simplify)
 >>> simplify.optimize(e)
-(<theano.gof.opt.TopoOptimizer object at 0x7f3219787f90>, 1, 5, 3, 0.00017309188842773438, 0.00020599365234375, 6.4849853515625e-05)
+(<theano.gof.opt.TopoOptimizer object at 0x...>, 1, 5, 3, ..., ..., ...)
 >>> e
 [add(z, mul(x, true_div(z, x)))]
 
@@ -334,6 +322,9 @@ Theano defines some shortcuts to make LocalOptimizers:
   Replaces all occurrences of the first pattern by the second pattern.
   See :class:`PatternSub`.
 
+.. testsetup::
+
+   from theano.scalar import identity
 
 .. testcode::
 
@@ -438,9 +429,9 @@ Query
 
 A Query is built by the following call:
 
-.. testcode::
+.. code-block:: python
 
-   theano.gof.Query(include, require = None, exclude = None, subquery = None)
+   theano.gof.Query(include, require=None, exclude=None, subquery=None)
 
 .. class:: Query
 
@@ -481,20 +472,21 @@ Optimizer:
 
 .. testcode::
    
+   from theano.gof import Query
    from theano.compile import optdb
 
    # This is how the optimizer for the fast_run mode is defined
-   fast_run = optdb.query(Query(include = ['fast_run']))
+   fast_run = optdb.query(Query(include=['fast_run']))
 
    # This is how the optimizer for the fast_compile mode is defined
-   fast_compile = optdb.query(Query(include = ['fast_compile']))
+   fast_compile = optdb.query(Query(include=['fast_compile']))
 
    # This is the same as fast_run but no optimizations will replace
    # any operation by an inplace version. This assumes, of course,
    # that all inplace operations are tagged as 'inplace' (as they
    # should!)
-   fast_run_no_inplace = optdb.query(Query(include = ['fast_run'], exclude = ['inplace']))
-   fast_run_no_inplace = fast_run.excluding('inplace')
+   fast_run_no_inplace = optdb.query(Query(include=['fast_run'],
+                                           exclude=['inplace']))
 
 
 Registering an Optimizer

doc/extending/other_ops.txt

@@ -90,7 +90,7 @@ and (like in SciPy) they do not support broadcasting operations by default
 formats for sparse type: ``csr`` and ``csc``. So in ``make_mode()``,
 you can create output variables like this:
 
-.. testcode::
+.. code-block:: python
 
     out_format = inputs[0].format  # or 'csr' or 'csc' if the output format is fixed
     SparseType(dtype=inputs[0].dtype, format=out_format).make_variable()

doc/extending/type.txt

@@ -176,8 +176,6 @@ must define ``filter`` and shall override ``values_eq_approx``.
 
 **filter**
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
 .. testcode::
 
     # Note that we shadow Python's function ``filter`` with this
@@ -246,8 +244,6 @@ contract. Recall that Type defines default implementations for all
 required methods of the interface, except ``filter``. One way to make
 the Type is to instantiate a plain Type and set the needed fields:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
 .. testcode::
 
    from theano import gof
@@ -260,8 +256,6 @@ the Type is to instantiate a plain Type and set the needed fields:
 Another way to make this Type is to make a subclass of ``gof.Type``
 and define ``filter`` and ``values_eq_approx`` in the subclass:
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
 .. code-block:: python
 
    from theano import gof
@@ -331,9 +325,6 @@ There are several ways to make sure that equality testing works properly:
  #. Define ``Double.__eq__`` so that instances of type Double
     are equal. For example:
 
-    .. If you modify this code, also change :
-    .. theano/tests/test_tutorial.py:T_extending.test_extending_1
-
     .. testcode::
 
         def __eq__(self, other):
@@ -387,8 +378,6 @@ attempt to clear up the confusion:
 Final version
 =============
 
-.. If you modify this code, also change :
-.. theano/tests/test_tutorial.py:T_extending.test_extending_1
 .. testcode::
 
    from theano import gof

doc/extending/unittest.txt

@@ -236,16 +236,16 @@ Example:
         def test_validity(self):
             a = T.dmatrix('a')
             b = T.dmatrix('b')
-            c = T.dot(a,b)
-            f = theano.function([a,b],[c])
-            cmp = f(self.avals,self.bvals) == numpy.dot(self.avals,self.bvals)
+            c = T.dot(a, b)
+            f = theano.function([a, b], [c])
+            cmp = f(self.avals, self.bvals) == numpy.dot(self.avals, self.bvals)
             self.assertTrue(numpy.all(cmp))
 
 Avoid hard-coding variables, as in the following case:
 
-.. testcode:: writeUnitest
+.. code-block:: python
 
-    self.assertTrue(numpy.all(f(self.avals,self.bvals)==numpy.array([[25,25,30,28],[21,18,14,25]])))
+    self.assertTrue(numpy.all(f(self.avals, self.bvals) == numpy.array([[25, 25, 30, 28], [21, 18, 14, 25]])))
 
 This makes the test case less manageable and forces the user to update
 the variables each time the input is changed or possibly when the

theano/tests/test_tutorial.py

@@ -22,475 +22,6 @@ from theano.sandbox.rng_mrg import MRG_RandomStreams
 from theano.tensor.shared_randomstreams import RandomStreams
 
 
-class T_extending(unittest.TestCase):
-    # All tests here belong to files in
-    # http://deeplearning.net/software/theano/extending
-    # Theano/doc/extending/*.txt
-    # Any change you do here also add it to the tutorial!
-    # This belongs to an entire folder since code-snippets are connected
-    # from one file to another .. and they do not make sense on their
-    # own.
-
-    def test_extending_1(self):
-
-        # Note that we shadow Python's function ``filter`` with this
-        # definition.
-        def filter(x, strict=False, allow_downcast=None):
-            if strict:
-                if isinstance(x, float):
-                    return x
-                else:
-                    raise TypeError('Expected a float!')
-            else:
-                return float(x)
-
-        def values_eq_approx(x, y, tolerance=1e-4):
-            return abs(x - y) / (abs(x) + abs(y)) < tolerance
-
-        from theano import gof
-
-        double = gof.Type()
-        double.filter = filter
-        double.values_eq_approx = values_eq_approx
-
-        from theano import gof
-
-        class Double(gof.Type):
-
-            def filter(self, x, strict=False):
-                if strict and not isinstance(x, float):
-                    raise TypeError('Expected a float!')
-                return float(x)
-
-            def values_eq_approx(self, x, y, tolerance=1e-4):
-                return abs(x - y) / (abs(x) + abs(y)) < tolerance
-
-            # Added to make those tests pass in DebugMode
-            @staticmethod
-            def may_share_memory(a, b):
-                return a is b
-
-        double = Double()
-
-        def __eq__(self, other):
-            return type(self) is Double and type(other) is Double
-
-        from theano import gof
-
-        class Double(gof.Type):
-
-            def filter(self, x, strict=False, allow_downcast=None):
-                if strict and not isinstance(x, float):
-                    raise TypeError('Expected a float!')
-                return float(x)
-
-            def values_eq_approx(self, x, y, tolerance=1e-4):
-                return abs(x - y) / (abs(x) + abs(y)) < tolerance
-
-            def __str__(self):
-                return "double"
-
-            # Added to make those tests pass in DebugMode
-            @staticmethod
-            def may_share_memory(a, b):
-                return a is b
-
-        double = Double()
-
-        from theano import gof
-        mul = gof.Op()
-
-        def make_node(x, y):
-            if x.type != double or y.type != double:
-                raise TypeError('mul only works on doubles')
-            return gof.Apply(mul, [x, y], [double()])
-        mul.make_node = make_node
-
-        def perform(node, inputs, output_storage):
-            x, y = inputs[0], inputs[1]
-            z = output_storage[0]
-            z[0] = x * y
-        mul.perform = perform
-
-        x, y = double('x'), double('y')
-        z = mul(x, y)
-        f = theano.function([x, y], z)
-        assert f(5, 6) == 30.0
-        assert f(5.6, 6.7) == 37.519999999999996
-
-        x = double('x')
-        self.assertRaises(AttributeError, mul, x, 2)
-
-        def make_node(x, y):
-            if isinstance(x, (int, float)):
-                x = gof.Constant(double, x)
-            if isinstance(y, (int, float)):
-                y = gof.Constant(double, y)
-            if x.type != double or y.type != double:
-                raise TypeError('mul only works on doubles')
-            return gof.Apply(mul, [x, y], [double()])
-        mul.make_node = make_node
-
-        x = double('x')
-        z = mul(x, 2)
-        f = theano.function([x], z)
-        assert f(10) == 20.0
-        assert f(3.4) == 6.7999999999999998
-
-        from theano import gof
-        class BinaryDoubleOp(gof.Op):
-        
-            __props__ = ("name", "fn")
-            
-            def __init__(self, name, fn):
-                self.name = name
-                self.fn = fn
-
-            def make_node(self, x, y):
-                if isinstance(x, (int, float)):
-                    x = gof.Constant(double, x)
-                if isinstance(y, (int, float)):
-                    y = gof.Constant(double, y)
-                if x.type != double or y.type != double:
-                    raise TypeError('%s only works on doubles' % self.name)
-                return gof.Apply(self, [x, y], [double()])
-
-            def perform(self, node, inp, out):
-                x, y = inp
-                z, = out
-                z[0] = self.fn(x, y)
-
-            def __str__(self):
-                return self.name
-
-        add = BinaryDoubleOp(name='add',
-                             fn=lambda x, y: x + y)
-
-        sub = BinaryDoubleOp(name='sub',
-                             fn=lambda x, y: x - y)
-
-        mul = BinaryDoubleOp(name='mul',
-                             fn=lambda x, y: x * y)
-
-        div = BinaryDoubleOp(name='div',
-                             fn=lambda x, y: x / y)
-
-    def test_extending_2(self):
-        '''
-         This test fails in DebugMode for the same reasons the test in
-         tensor/tests/test_basic.py:T_scalarfromtensor.test0
-         fails on debug mode ( as much as I could tell - Razvan )
-        '''
-        from theano import gof
-
-        class Double(gof.Type):
-
-            def filter(self, x, strict=False, allow_downcast=None):
-                if strict and not isinstance(x, float):
-                    raise TypeError('Expected a float!')
-                return float(x)
-
-            def values_eq_approx(self, x, y, tolerance=1e-4):
-                return abs(x - y) / (abs(x) + abs(y)) < tolerance
-
-            def __str__(self):
-                return "double"
-
-            # Added to make those tests pass in DebugMode
-            @staticmethod
-            def may_share_memory(a, b):
-                return a is b
-
-        double = Double()
-
-        class BinaryDoubleOp(gof.Op):
-        
-            __props__ = ("name", "fn")
-            
-            def __init__(self, name, fn):
-                self.name = name
-                self.fn = fn
-
-            def make_node(self, x, y):
-                if isinstance(x, (int, float)):
-                    x = gof.Constant(double, x)
-                if isinstance(y, (int, float)):
-                    y = gof.Constant(double, y)
-                if x.type != double or y.type != double:
-                    raise TypeError('%s only works on doubles' % self.name)
-                return gof.Apply(self, [x, y], [double()])
-
-            def perform(self, node, inp, out):
-                x, y = inp
-                z, = out
-                z[0] = self.fn(x, y)
-
-            def __str__(self):
-                return self.name
-
-        add = BinaryDoubleOp(name='add',
-                             fn=lambda x, y: x + y)
-
-        sub = BinaryDoubleOp(name='sub',
-                             fn=lambda x, y: x - y)
-
-        mul = BinaryDoubleOp(name='mul',
-                             fn=lambda x, y: x * y)
-
-        div = BinaryDoubleOp(name='div',
-                             fn=lambda x, y: x / y)
-
-        def c_declare(name, sub, check_input=True):
-            return """
-            double %(name)s;
-            """ % dict(name=name)
-        double.c_declare = c_declare
-
-        def c_init(name, sub):
-            return """
-            %(name)s = 0.0;
-            """ % dict(name=name)
-        double.c_init = c_init
-
-        def c_extract(name, sub, check_input=True):
-            if(check_input):
-                pre = """
-                if (!PyFloat_Check(py_%(name)s)) {
-                    PyErr_SetString(PyExc_TypeError, "expected a float");
-                    %(fail)s
-                }""" % dict(name=name, fail=sub['fail'])
-            else:
-                pre = ""
-            return pre + """
-            %(name)s = PyFloat_AsDouble(py_%(name)s);
-            """ % dict(name=name, fail=sub['fail'])
-        double.c_extract = c_extract
-
-        def c_sync( name, sub):
-            return """
-            Py_XDECREF(py_%(name)s);
-            py_%(name)s = PyFloat_FromDouble(%(name)s);
-            if (!py_%(name)s) {
-                printf("PyFloat_FromDouble failed on: %%f\\n", %(name)s);
-                Py_XINCREF(Py_None);
-                py_%(name)s = Py_None;
-            }
-            """ % dict(name=name)
-        double.c_sync = c_sync
-
-        def c_cleanup(name, sub):
-            return ""
-        double.c_cleanup = c_cleanup
-
-        from theano import function
-
-        x, y, z = double('x'), double('y'), double('z')
-        a = add(x, y)
-        b = mul(a, z)
-        f = function([x, y, z], b)
-        assert f(1.0, 2.0, 3.0) == 9.0
-
-        from theano import gof
-        class Double(gof.Type):
-
-            def filter(self, x, strict=False, allow_downcast=None):
-                if strict and not isinstance(x, float):
-                    raise TypeError('Expected a float!')
-                return float(x)
-
-            def values_eq_approx(self, x, y, tolerance=1e-4):
-                return abs(x - y) / (x + y) < tolerance
-
-            def __str__(self):
-                return "double"
-
-            def c_declare(self, name, sub, check_input=True):
-                return """
-                double %(name)s;
-                """ % dict(name=name)
-
-            def c_init(self, name, sub):
-                return """
-                %(name)s = 0.0;
-                """ % dict(name=name)
-
-            def c_extract(self, name, sub, check_input=True):
-                if(check_input):
-                    pre = """
-                    if (!PyFloat_Check(py_%(name)s)) {
-                        PyErr_SetString(PyExc_TypeError, "expected a float");
-                        %(fail)s
-                    }
-                    """ % dict(sub, name=name)
-                else:
-                    pre = ""
-                return pre + """
-                %(name)s = PyFloat_AsDouble(py_%(name)s);
-                """ % dict(sub, name=name)
-
-            def c_sync(self, name, sub):
-                return """
-                Py_XDECREF(py_%(name)s);
-                py_%(name)s = PyFloat_FromDouble(%(name)s);
-                if (!py_%(name)s) {
-                    printf("PyFloat_FromDouble failed on: %%f\\n", %(name)s);
-                    Py_XINCREF(Py_None);
-                    py_%(name)s = Py_None;
-                }
-                """ % dict(name=name)
-
-            def c_cleanup(self, name, sub):
-                return ""
-
-            # Added to make those tests pass in DebugMode
-            @staticmethod
-            def may_share_memory(a, b):
-                return a is b
-
-        double = Double()
-
-        def c_code(node, name, input_names, output_names, sub):
-            x_name, y_name = input_names[0], input_names[1]
-            output_name = output_names[0]
-            return """
-            %(output_name)s = %(x_name)s * %(y_name)s;
-            """ % locals()
-        mul.c_code = c_code
-
-        from theano import gof
-        class BinaryDoubleOp(gof.Op):
-
-            __props__ = ("name", "fn", "ccode")
-            
-            def __init__(self, name, fn, ccode):
-                self.name = name
-                self.fn = fn
-                self.ccode = ccode
-
-            def make_node(self, x, y):
-                if isinstance(x, (int, float)):
-                    x = gof.Constant(double, x)
-                if isinstance(y, (int, float)):
-                    y = gof.Constant(double, y)
-                if x.type != double or y.type != double:
-                    raise TypeError('%s only works on doubles' % self.name)
-                return gof.Apply(self, [x, y], [double()])
-
-            def perform(self, node, inp, out):
-                x, y = inp
-                z, = out
-                z[0] = self.fn(x, y)
-
-            def __str__(self):
-                return self.name
-
-            def c_code(self, node, name, inp, out, sub):
-                x, y = inp
-                z, = out
-                return self.ccode % locals()
-
-        add = BinaryDoubleOp(name='add',
-                            fn=lambda x, y: x + y,
-                            ccode="%(z)s = %(x)s + %(y)s;")
-
-        sub = BinaryDoubleOp(name='sub',
-                            fn=lambda x, y: x - y,
-                            ccode="%(z)s = %(x)s - %(y)s;")
-
-        mul = BinaryDoubleOp(name='mul',
-                            fn=lambda x, y: x * y,
-                            ccode="%(z)s = %(x)s * %(y)s;")
-
-        div = BinaryDoubleOp(name='div',
-                            fn=lambda x, y: x / y,
-                            ccode="%(z)s = %(x)s / %(y)s;")
-
-        from theano.gof import toolbox
-
-        class Simplify(gof.Optimizer):
-            def add_requirements(self, fgraph):
-                fgraph.attach_feature(toolbox.ReplaceValidate())
-            def apply(self, fgraph):
-                for node in fgraph.toposort():
-                    if node.op == div:
-                        x, y = node.inputs
-                        z = node.outputs[0]
-                        if x.owner and x.owner.op == mul:
-                            a, b = x.owner.inputs
-                            if y == a:
-                                fgraph.replace_validate(z, b)
-                            elif y == b:
-                                fgraph.replace_validate(z, a)
-
-        simplify = Simplify()
-        x = double('x')
-        y = double('y')
-        z = double('z')
-        a = add(z, mul(div(mul(y, x), y), div(z, x)))
-        e = gof.FunctionGraph([x, y, z], [a])
-        simplify.optimize(e)
-
-        class LocalSimplify(gof.LocalOptimizer):
-            def transform(self, node):
-                if node.op == div:
-                    x, y = node.inputs
-                    if x.owner and x.owner.op == mul:
-                        a, b = x.owner.inputs
-                        if y == a:
-                            return [b]
-                        elif y == b:
-                            return [a]
-                return False
-            def tracks(self):
-                # This should be needed for the EquilibriumOptimizer
-                # but it isn't now
-                # TODO: do this and explain it
-                return []  # that's not what you should do
-
-        local_simplify = LocalSimplify()
-
-        x = double('x')
-        y = double('y')
-        z = double('z')
-        a = add(z, mul(div(mul(y, x), y), div(z, x)))
-        e = gof.FunctionGraph([x, y, z], [a])
-        simplify = gof.TopoOptimizer(local_simplify)
-        simplify.optimize(e)
-
-    def test_as_op(self):
-        import theano
-        import numpy
-        from theano.compile.ops import as_op
-
-        def infer_shape_numpy_dot(node, input_shapes):
-            ashp, bshp = input_shapes
-            return [ashp[:-1] + bshp[-1:]]
-
-        @as_op(itypes=[theano.tensor.fmatrix, theano.tensor.fmatrix],
-               otypes=[theano.tensor.fmatrix],
-               infer_shape=infer_shape_numpy_dot)
-        def numpy_add(a, b):
-            return numpy.add(a, b)
-
-        def infer_shape_numpy_add_sub(node, input_shapes):
-            ashp, bshp = input_shapes
-            # Both inputs should have that same shape, so we just
-            # return one of them.
-            return [ashp[0]]
-
-        @as_op(itypes=[theano.tensor.fmatrix, theano.tensor.fmatrix],
-               otypes=[theano.tensor.fmatrix],
-               infer_shape=infer_shape_numpy_add_sub)
-        def numpy_add(a, b):
-            return numpy.add(a, b)
-
-        @as_op(itypes=[theano.tensor.fmatrix, theano.tensor.fmatrix],
-               otypes=[theano.tensor.fmatrix],
-               infer_shape=infer_shape_numpy_add_sub)
-        def numpy_sub(a, b):
-            return numpy.sub(a, b)
-
-
 class T_using_gpu(unittest.TestCase):
     # All tests here belog to
     # http://deeplearning.net/software/theano/tutorial/using_gpu.html
@@ -684,127 +215,6 @@ class Fibby(theano.Op):
         return (1,)
 
 
-class T_fibby(unittest.TestCase):
-    # All tests here belong to
-    # http://deeplearning.net/software/theano/extending/fibby.html
-    # Theano/doc/extending/fibby.txt
-    # Any change you do here also add it to the tutorial !
-
-    def test_fibby_1(self):
-
-        # The definition of class Fibby is done outside of the test,
-        # so the object can be pickled.
-        fibby = Fibby()
-
-        from theano.tensor.opt import (get_scalar_constant_value,
-                                       NotScalarConstantError)
-
-        # Remove any fibby(zeros(...))
-        @theano.tensor.opt.register_specialize
-        @theano.gof.local_optimizer([fibby])
-        def fibby_of_zero(node):
-            if node.op == fibby:
-                x = node.inputs[0]
-                try:
-                    if numpy.all(0 == get_scalar_constant_value(x)):
-                        return [x]
-                except NotScalarConstantError:
-                    pass
-
-        # Test it does not apply when not needed
-        x = T.dvector()
-        f = function([x], fibby(x))
-        # theano.printing.debugprint(f)
-
-        # We call the function to make sure it runs.
-        # If you run in DebugMode, it will compare the C and Python outputs.
-        f(numpy.random.rand(5))
-        topo = f.maker.fgraph.toposort()
-        assert len(topo) == 1
-        assert isinstance(topo[0].op, Fibby)
-
-        # Test that the optimization gets applied.
-        f_zero = function([], fibby(T.zeros([5])))
-        # theano.printing.debugprint(f_zero)
-
-        # If you run in DebugMode, it will compare the output before
-        # and after the optimization.
-        f_zero()
-
-        # Check that the optimization removes the Fibby Op.
-        # For security, the Theano memory interface ensures that the output
-        # of the function is always memory not aliased to the input.
-        # That is why there is a DeepCopyOp op.
-        topo = f_zero.maker.fgraph.toposort()
-        assert len(topo) == 1
-        assert isinstance(topo[0].op, theano.compile.ops.DeepCopyOp)
-
-
-class T_graphstructures(unittest.TestCase):
-    # All tests here belong to
-    # http://deeplearning.net/software/theano/extending/graphstructures.html
-    # Theano/doc/extending/graphstructures.txt
-    # Any change you do here also add it to the tutorial !
-
-    def test_graphstructures_1(self):
-
-        x = T.dmatrix('x')
-        y = T.dmatrix('y')
-        z = x + y
-
-        x = T.matrix('x')
-        y = T.matrix('y')
-        z = T.matrix('z')
-
-        # create 2 Variables (one for 'e', one intermediate for y*z)
-        # create 2 Apply instances (one for '+', one for '*')
-        e = x + y * z
-
-        from theano.tensor import add, mul, Apply, Variable, TensorType
-
-        # Instantiate a type that represents a matrix of doubles
-        float64_matrix = TensorType(dtype='float64',               # double
-                                    broadcastable=(False, False))  # matrix
-
-        # We make the Variable instances we need.
-        x = Variable(type=float64_matrix, name='x')
-        y = Variable(type=float64_matrix, name='y')
-        z = Variable(type=float64_matrix, name='z')
-
-        # This is the Variable that we want to symbolically represents y*z
-        mul_variable = Variable(type=float64_matrix)
-        assert mul_variable.owner is None
-
-        # Instantiate a symbolic multiplication
-        node_mul = Apply(op=mul,
-                         inputs=[y, z],
-                         outputs=[mul_variable])
-        # Fields 'owner' and 'index' are set by Apply
-        assert mul_variable.owner is node_mul
-        # 'index' is the position of mul_variable in mode_mul's outputs
-        assert mul_variable.index == 0
-
-        # This is the Variable that we want to symbolically represents x+(y*z)
-        add_variable = Variable(type=float64_matrix)
-        assert add_variable.owner is None
-
-        # Instantiate a symbolic addition
-        node_add = Apply(op=add,
-                         inputs=[x, mul_variable],
-                         outputs=[add_variable])
-        # Fields 'owner' and 'index' are set by Apply
-        assert add_variable.owner is node_add
-        assert add_variable.index == 0
-
-        e = add_variable
-
-        # We have access to x, y and z through pointers
-        assert e.owner.inputs[0] is x
-        assert e.owner.inputs[1] is mul_variable
-        assert e.owner.inputs[1].owner.inputs[0] is y
-        assert e.owner.inputs[1].owner.inputs[1] is z
-
-
 class T_scan(unittest.TestCase):
     # All tests here belong to
     # http://deeplearning.net/software/theano/tutorial/loop.html