Add QElidingLineEdit class for elidable QLineEdits (#154)

* Add QElidingLineEdit class for elidable QLineEdits

* Fix QElidingLineEdit tests on Linux and MacOS

* Testing

---------

Co-authored-by: Talley Lambert <talley.lambert@gmail.com>

tests/test_eliding_label.py

@@ -31,14 +31,14 @@ def test_wrapped_eliding_label(qtbot):
     qtbot.addWidget(wdg)
     assert not wdg.wordWrap()
     assert 630 < wdg.sizeHint().width() < 640
-    assert wdg._elidedText().endswith("…")
+    assert wdg._elidedText().endswith(ELLIPSIS)
     wdg.resize(QSize(200, 100))
     assert wdg.text() == TEXT
-    assert wdg._elidedText().endswith("…")
+    assert wdg._elidedText().endswith(ELLIPSIS)
     wdg.setWordWrap(True)
     assert wdg.wordWrap()
     assert wdg.text() == TEXT
-    assert wdg._elidedText().endswith("…")
+    assert wdg._elidedText().endswith(ELLIPSIS)
     # just empirically from CI ... stupid
     if platform.system() == "Linux":
         assert wdg.sizeHint() in (QSize(200, 198), QSize(200, 154))

tests/test_eliding_line_edit.py

@@ -0,0 +1,60 @@
+from qtpy.QtCore import QSize, Qt
+from qtpy.QtGui import QResizeEvent
+
+from superqt import QElidingLineEdit
+
+TEXT = "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do"
+ELLIPSIS = "…"
+
+
+def test_init_text_eliding_line_edit(qtbot):
+    wdg = QElidingLineEdit(TEXT)
+    qtbot.addWidget(wdg)
+    oldsize = QSize(100, 20)
+    wdg.resize(oldsize)
+    assert wdg._elidedText().endswith(ELLIPSIS)
+    newsize = QSize(500, 20)
+    wdg.resize(newsize)
+    wdg.resizeEvent(QResizeEvent(oldsize, newsize))  # for test coverage
+    assert wdg._elidedText() == TEXT
+    assert wdg.text() == TEXT
+
+
+def test_set_text_eliding_line_edit(qtbot):
+    wdg = QElidingLineEdit()
+    qtbot.addWidget(wdg)
+    wdg.resize(500, 20)
+    wdg.setText(TEXT)
+    assert not wdg._elidedText().endswith(ELLIPSIS)
+    wdg.resize(100, 20)
+    assert wdg._elidedText().endswith(ELLIPSIS)
+
+
+def test_set_elide_mode_eliding_line_edit(qtbot):
+    wdg = QElidingLineEdit()
+    qtbot.addWidget(wdg)
+    wdg.resize(500, 20)
+    wdg.setText(TEXT)
+    assert not wdg._elidedText().endswith(ELLIPSIS)
+    wdg.resize(100, 20)
+    # ellipses should be to the right
+    assert wdg._elidedText().endswith(ELLIPSIS)
+
+    # ellipses should be to the left
+    wdg.setElideMode(Qt.TextElideMode.ElideLeft)
+    assert wdg._elidedText().startswith(ELLIPSIS)
+    assert wdg.elideMode() == Qt.TextElideMode.ElideLeft
+
+    # no ellipses should be shown
+    wdg.setElideMode(Qt.TextElideMode.ElideNone)
+    assert ELLIPSIS not in wdg._elidedText()
+
+
+def test_set_elipses_width_eliding_line_edit(qtbot):
+    wdg = QElidingLineEdit()
+    qtbot.addWidget(wdg)
+    wdg.resize(500, 20)
+    wdg.setText(TEXT)
+    assert not wdg._elidedText().endswith(ELLIPSIS)
+    wdg.setEllipsesWidth(int(wdg.width() / 2))
+    assert wdg._elidedText().endswith(ELLIPSIS)