mojo: Add deserialization to python structs.

mojo/python/tests/bindings_serialization_deserialization_unittest.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import math
 import unittest
 
 # pylint: disable=F0401
+import mojo.bindings.reflection as reflection
 import mojo.system
 
 # Generated files
 # pylint: disable=F0401
+import sample_import_mojom
+import sample_import2_mojom
 import sample_service_mojom
 
 
 def _NewHandle():
   return mojo.system.MessagePipe().handle0
 
+
+def _TestEquality(x, y):
+  if x == y:
+    return True
+
+  if type(x) != type(y):
+    print '\n%r != %r. Element are not of the same type.' % (x, y)
+    return False
+
+  if isinstance(x, float) and math.isnan(x) and math.isnan(y):
+    return True
+
+  if hasattr(x, '__len__'):
+    if len(x) != len(y):
+      print '\n%r != %r. Iterables are not of the same size.' % (x, y)
+      return False
+    for (x1, y1) in zip(x, y):
+      if not _TestEquality(x1, y1):
+        return False
+    return True
+
+  if (hasattr(x, '__metaclass__') and
+      x.__metaclass__ == reflection.MojoStructType):
+    properties = [p for p in dir(x) if not p.startswith('_')]
+    for p in properties:
+      p1 = getattr(x, p)
+      p2 = getattr(y, p)
+      if not hasattr(p1, '__call__') and not _TestEquality(p1, p2):
+        print '\n%r != %r. Not equal for property %r.' % (x, y, p)
+        return False
+    return True
+
+  return False
+
+
+def _NewBar():
+  bar_instance = sample_service_mojom.Bar()
+  bar_instance.alpha = 22
+  bar_instance.beta = 87
+  bar_instance.gamma = 122
+  bar_instance.type = sample_service_mojom.Bar.Type.BOTH
+  return bar_instance
+
+
 def _NewFoo():
   foo_instance = sample_service_mojom.Foo()
   foo_instance.name = "Foo.name"
   foo_instance.x = 23
   foo_instance.y = -23
   foo_instance.a = False
   foo_instance.b = True
   foo_instance.c = True
-  foo_instance.bar = sample_service_mojom.Bar()
+  foo_instance.bar = _NewBar()
   foo_instance.extra_bars = [
-      sample_service_mojom.Bar(),
-      sample_service_mojom.Bar()
+      _NewBar(),
+      _NewBar(),
   ]
   foo_instance.data = 'Hello world'
   foo_instance.source = _NewHandle()
   foo_instance.input_streams = [ _NewHandle() ]
   foo_instance.output_streams = [ _NewHandle(), _NewHandle() ]
   foo_instance.array_of_array_of_bools = [ [ True, False ], [] ]
   foo_instance.multi_array_of_strings = [
       [
           [ "1", "2" ],
           [],
           [ "3", "4" ],
       ],
       [],
   ]
-  foo_instance.array_of_bools = [ True, 0, 1, 2, 0 ]
+  foo_instance.array_of_bools = [ True, 0, 1, 2, 0, 0, 0, 0, 0, True ]
   return foo_instance
 
+
 class SerializationDeserializationTest(unittest.TestCase):
 
+  def testTestEquality(self):
+    self.assertFalse(_TestEquality(1, 2))
+
   def testFooSerialization(self):
     (data, _) = _NewFoo().Serialize()
     self.assertTrue(len(data))
     self.assertEquals(len(data) % 8, 0)
+
+  def testFooDeserialization(self):
+    (data, handles) = _NewFoo().Serialize()
+    self.assertTrue(
+        sample_service_mojom.Foo.Deserialize(memoryview(data), handles))
+
+  def testFooSerializationDeserialization(self):
+    foo1 = _NewFoo()
+    (data, handles) = foo1.Serialize()
+    foo2 = sample_service_mojom.Foo.Deserialize(memoryview(data), handles)
+    self.assertTrue(_TestEquality(foo1, foo2))
+
+  def testDefaultsTestSerializationDeserialization(self):
+    v1 = sample_service_mojom.DefaultsTest()
+    v1.a18 = []
+    v1.a19 = ""
+    v1.a21 = sample_import_mojom.Point()
+    v1.a22.location = sample_import_mojom.Point()
+    v1.a22.size = sample_import2_mojom.Size()
+    (data, handles) = v1.Serialize()
+    v2 = sample_service_mojom.DefaultsTest.Deserialize(memoryview(data),
+                                                       handles)
+    self.assertTrue(_TestEquality(v1, v2))
+
+  def testFooDeserializationError(self):
+    with self.assertRaises(Exception):
+      sample_service_mojom.Foo.Deserialize("", [])