✨ 新增select语句

tests/test_select.py

@@ -0,0 +1,42 @@
+from multiprocessing import Process
+
+from magicoca import Chan, select
+
+
+def sp1(chan: Chan[int]):
+    for i in range(10):
+        chan << i
+
+
+def sp2(chan: Chan[int]):
+    for i in range(10):
+        chan << i
+
+
+def rp(chans: list[Chan[int]]):
+    rl = []
+    for t in select(*chans):
+        rl.append(t)
+        if len(rl) == 20:
+            break
+    print(rl)
+    assert len(rl) == 20
+
+
+class TestSelect:
+    def test_select(self):
+        chan1 = Chan[int]()
+        chan2 = Chan[int]()
+
+        print("Test Chan Select")
+
+        p1 = Process(target=sp1, args=(chan1,))
+        p2 = Process(target=sp2, args=(chan2,))
+        p3 = Process(target=rp, args=([chan1, chan2],))
+        p3.start()
+        p1.start()
+        p2.start()
+
+        p1.join()
+        p2.join()
+        p3.join()