multiprocessing: tests: Turn into proper tests, make CPython compatible.

multiprocessing/test_pipe.py

@@ -1,6 +1,6 @@
 import sys
 import os
-from multiprocessing import Process, Pipe, Connection
+from multiprocessing import Process, Pipe
 
 def f(conn):
     conn.send([42, None, 'hello'])
@@ -9,11 +9,14 @@ def f(conn):
 
 if __name__ == '__main__':
     parent_conn, child_conn = Pipe(False)
-    print(parent_conn, child_conn)
+    #print(parent_conn, child_conn)
     p = Process(target=f, args=(child_conn,))
+
     # Extension: need to call this for uPy
-    p.register_pipe(parent_conn, child_conn)
+    if sys.implementation.name == "micropython":
+        p.register_pipe(parent_conn, child_conn)
+
     p.start()
-    print(parent_conn.recv())
-    print(parent_conn.recv())
+    parent_conn.recv() == [42, None, 'hello']
+    parent_conn.recv() == [42, 42, 42]
     p.join()

multiprocessing/test_pool.py

@@ -4,4 +4,4 @@ def f(x):
     return x*x
 
 pool = Pool(4)
-print(pool.apply(f, (10,)))
+assert pool.apply(f, (10,)) == 100

multiprocessing/test_pool_async.py

@@ -6,19 +6,21 @@ def f(x):
 
 pool = Pool(4)
 future = pool.apply_async(f, (10,))
-print(future.get())
+assert future.get() == 100
 
 def f2(x):
-    time.sleep(1)
+    time.sleep(0.5)
     return x + 1
 
 future = pool.apply_async(f2, (10,))
+iter = 0
 while not future.ready():
-    print("not ready")
-    time.sleep(0.2)
-
-print(future.get())
+    #print("not ready")
+    time.sleep(0.1)
+    iter += 1
 
+assert future.get() == 11
+assert iter >= 5 and iter <= 8
 
 t = time.time()
 futs = [
@@ -27,6 +29,7 @@ futs = [
     pool.apply_async(f2, (12,)),
 ]
 
+iter = 0
 while True:
     #not all(futs):
     c = 0
@@ -35,7 +38,10 @@ while True:
             c += 1
     if not c:
         break
-    print("not ready2")
-    time.sleep(0.2)
+    #print("not ready2")
+    time.sleep(0.1)
+    iter += 1
+
+assert iter >= 5 and iter <= 8
 
 print("Run 3 parallel sleep(1)'s in: ", time.time() - t)

multiprocessing/test_process.py

@@ -1,7 +1,7 @@
 from multiprocessing import Process
 
 def f(name):
-    print('hello', name)
+    assert name == 'bob'
 
 if __name__ == '__main__':
     p = Process(target=f, args=('bob',))