tests: add unit tests for DirectOptionMenu

tests/gui/test_DirectOptionMenu.py

@@ -0,0 +1,73 @@
+from direct.gui.DirectOptionMenu import DirectOptionMenu
+import pytest
+
+
+def test_menu_destroy():
+    menu = DirectOptionMenu(items=["item1", "item2"])
+    menu.destroy()
+
+
+def test_showPopupMenu():
+    menu = DirectOptionMenu()
+
+    # Showing an option menu without items will raise an exception
+    with pytest.raises(Exception):
+        menu.showPopupMenu()
+
+    menu["items"] = ["item1", "item2"]
+    menu.showPopupMenu()
+    assert not menu.popupMenu.isHidden()
+    assert not menu.cancelFrame.isHidden()
+
+    menu.hidePopupMenu()
+    assert menu.popupMenu.isHidden()
+    assert menu.cancelFrame.isHidden()
+
+
+def test_index():
+    menu = DirectOptionMenu(items=["item1", "item2"])
+    assert menu.index("item1") == 0
+    assert menu.index("item2") == 1
+
+
+def test_set_get():
+    menu = DirectOptionMenu(items=["item1", "item2"])
+    menu.set(1, False)
+    assert menu.selectedIndex == 1
+    assert menu.get() == "item2"
+    assert menu["text"] == "item2"
+
+
+def test_initialitem():
+    # initialitem by string
+    menuByStr = DirectOptionMenu(items=["item1", "item2"], initialitem="item2")
+    assert menuByStr.get() == "item2"
+    assert menuByStr["text"] == "item2"
+
+    # initialitem by Index
+    menuByIdx = DirectOptionMenu(items=["item1", "item2"], initialitem=1)
+    assert menuByIdx.get() == "item2"
+    assert menuByIdx["text"] == "item2"
+
+
+def test_item_text_scale():
+    highlightScale = (2, 2)
+    unhighlightScale = (0.5, 0.5)
+    menu = DirectOptionMenu(
+        items=["item1", "item2"],
+        item_text_scale=unhighlightScale,
+        highlightScale=highlightScale)
+
+    # initial scale
+    item = menu.component("item0")
+
+    item_text_scale = 0.8
+    assert item["text_scale"] == unhighlightScale
+
+    # highlight scale
+    menu._highlightItem(item, 0)
+    assert item["text_scale"] == highlightScale
+
+    # back to initial scale
+    menu._unhighlightItem(item, item["frameColor"])
+    assert item["text_scale"] == unhighlightScale