Add initial tests

test/addressbook.capnp

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+@0x934efea7f017fff0;
+
+const qux :UInt32 = 123;
+
+struct Person {
+  id @0 :UInt32;
+  name @1 :Text;
+  email @2 :Text;
+  phones @3 :List(PhoneNumber);
+
+  struct PhoneNumber {
+    number @0 :Text;
+    type @1 :Type;
+
+    enum Type {
+      mobile @0;
+      home @1;
+      work @2;
+    }
+  }
+
+  employment :union {
+    unemployed @4 :Void;
+    employer @5 :Text;
+    school @6 :Text;
+    selfEmployed @7 :Void;
+    # We assume that a person is only one of these.
+  }
+}
+
+struct AddressBook {
+  people @0 :List(Person);
+}
+

test/test_load.py

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+import pytest
+import capnp
+from capnp import _capnp
+import os
+
+this_dir = os.path.dirname(__file__)
+
+@pytest.fixture
+def addressbook():
+     return capnp.load(os.path.join(this_dir, 'addressbook.capnp'))
+
+def test_basic_load():
+    capnp.load(os.path.join(this_dir, 'addressbook.capnp'))
+
+def test_constants(addressbook):
+    assert addressbook.qux == 123
+
+def test_classes(addressbook):
+    assert addressbook.AddressBook
+    assert addressbook.Person
+
+def test_schemas(addressbook):
+    assert type(addressbook.AddressBook.schema) is _capnp._StructSchema
+    assert type(addressbook.Person.schema) is _capnp._StructSchema

tox.ini

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+[tox]
+envlist = py26,py27,py32,py33
+
+[testenv]
+deps=
+    pytest
+    cython
+
+commands =
+    py.test