Add pyqtgraph as submodule

pyqtgraph/widgets/tests/test_combobox.py

@@ -0,0 +1,44 @@
+import pyqtgraph as pg
+pg.mkQApp()
+
+def test_combobox():
+    cb = pg.ComboBox()
+    items = {'a': 1, 'b': 2, 'c': 3}
+    cb.setItems(items)
+    cb.setValue(2)
+    assert str(cb.currentText()) == 'b'
+    assert cb.value() == 2
+    
+    # Clear item list; value should be None
+    cb.clear()
+    assert cb.value() == None
+    
+    # Reset item list; value should be set automatically
+    cb.setItems(items)
+    assert cb.value() == 2
+    
+    # Clear item list; repopulate with same names and new values
+    items = {'a': 4, 'b': 5, 'c': 6}
+    cb.clear()
+    cb.setItems(items)
+    assert cb.value() == 5
+    
+    # Set list instead of dict
+    cb.setItems(list(items.keys()))
+    assert str(cb.currentText()) == 'b'
+    
+    cb.setValue('c')
+    assert cb.value() == str(cb.currentText())
+    assert cb.value() == 'c'
+    
+    cb.setItemValue('c', 7)
+    assert cb.value() == 7
+    
+    
+if __name__ == '__main__':
+    cb = pg.ComboBox()
+    cb.show()
+    cb.setItems({'': None, 'a': 1, 'b': 2, 'c': 3})
+    def fn(ind):
+        print("New value: %s" % cb.value())
+    cb.currentIndexChanged.connect(fn)