Added observables

unittests/unittests_reactive_extenstions/reactive_test_case.py

@@ -0,0 +1,71 @@
+import unittest
+from threading import Timer
+
+from cpl_reactive_extensions.observable import Observable
+from cpl_reactive_extensions.observer import Observer
+
+
+class ReactiveTestCase(unittest.TestCase):
+    def setUp(self):
+        pass
+
+    def test_observer(self):
+        called = 0
+        has_error = False
+        completed = False
+        test_x = 1
+
+        def callback(observer: Observer):
+            nonlocal test_x
+            observer.next(test_x)
+            test_x += 1
+            observer.next(test_x)
+            test_x += 1
+            observer.next(test_x)
+
+            def complete():
+                nonlocal test_x
+                test_x += 1
+                observer.next(test_x)
+                observer.complete()
+
+            Timer(1.0, complete).start()
+
+        observable = Observable(callback)
+
+        def on_next(x):
+            nonlocal called
+            called += 1
+            self.assertEqual(test_x, x)
+
+        def on_err():
+            nonlocal has_error
+            has_error = True
+
+        def on_complete():
+            nonlocal completed
+            completed = True
+
+        self.assertEqual(called, 0)
+        self.assertFalse(has_error)
+        self.assertFalse(completed)
+        observable.subscribe(
+            Observer(
+                on_next,
+                on_err,
+                on_complete,
+            )
+        )
+        self.assertEqual(called, 3)
+        self.assertFalse(has_error)
+        self.assertFalse(completed)
+
+        def complete():
+            self.assertEqual(called, 4)
+            self.assertFalse(has_error)
+            self.assertTrue(completed)
+
+        Timer(1.0, complete).start()
+
+    def test_subject(self):
+        pass