Issue #21477: Idle htest: merge and modify run and runall; add many tests.

Patch by Saimadhav Heblikar

Lib/idlelib/MultiStatusBar.py

@@ -17,16 +17,29 @@ class MultiStatusBar(Frame):
             label = self.labels[name]
         label.config(text=text)
 
-def _test():
-    b = Frame()
-    c = Text(b)
-    c.pack(side=TOP)
-    a = MultiStatusBar(b)
-    a.set_label("one", "hello")
-    a.set_label("two", "world")
-    a.pack(side=BOTTOM, fill=X)
-    b.pack()
-    b.mainloop()
+def _multistatus_bar(parent):
+    root = Tk()
+    width, height, x, y = list(map(int, re.split('[x+]', parent.geometry())))
+    root.geometry("+%d+%d" %(x, y + 150))
+    root.title("Test multistatus bar")
+    frame = Frame(root)
+    text = Text(frame)
+    text.pack()
+    msb = MultiStatusBar(frame)
+    msb.set_label("one", "hello")
+    msb.set_label("two", "world")
+    msb.pack(side=BOTTOM, fill=X)
+
+    def change():
+        msb.set_label("one", "foo")
+        msb.set_label("two", "bar")
+
+    button = Button(root, text="Update status", command=change)
+    button.pack(side=BOTTOM)
+    frame.pack()
+    frame.mainloop()
+    root.mainloop()
 
 if __name__ == '__main__':
-    _test()
+    from idlelib.idle_test.htest import run
+    run(_multistatus_bar)