Add initial ghost point tests

test/conftest.py

@@ -1,7 +1,18 @@
 """
 Definitions for test fixtures used within other tests.
 """
+from typing import (
+    Callable,
+    Any,
+)
+
 import pytest
+from PyQt5.QtCore import (
+    Qt,
+    QEvent,
+    QPoint,
+)
+from PyQt5.QtGui import QMouseEvent
 
 from tactool.table_model import TableModel
 from tactool.main import TACtool
@@ -36,3 +47,29 @@ def public_index(model: TableModel):
     The index in the list of headers where the public headers end.
     """
     return len(model.public_headers)
+
+
+def create_mock_event(
+    x: int = 0,
+    y: int = 0,
+) -> QMouseEvent:
+    """
+    Create a QEvent object for tests to simulate mouse/keyboard input from user.
+    """
+    event = QMouseEvent(
+        QEvent.MouseMove,
+        QPoint(x, y),
+        Qt.NoButton,
+        Qt.MouseButtons(Qt.NoButton),
+        Qt.KeyboardModifiers(Qt.NoModifier),
+    )
+    return event
+
+
+def create_function_return(value: Any) -> Callable[[Any], Any]:
+    """
+    Return a function which returns the given value.
+    """
+    def new_function(*args, **kwargs) -> Any:
+        return value
+    return new_function

test/test_integration.py

@@ -8,6 +8,7 @@
 """
 from tactool.main import TACtool
 from tactool.analysis_point import AnalysisPoint
+from conftest import create_mock_event, create_function_return
 
 
 def test_add_and_remove_points(tactool: TACtool, public_index: int):
@@ -24,6 +25,12 @@ def test_add_and_remove_points(tactool: TACtool, public_index: int):
     # The 1st Analysis Point has default settings
     tactool.graphics_view.left_click.emit(101, 101)
 
+    # Override the function with a new function which always returns True, to avoid genuine mouse detection during test
+    tactool.graphics_view._image.isUnderMouse = create_function_return(True)
+    # Ensure the ghost point is not created as it is disabled by default
+    tactool.graphics_view.mouseMoveEvent(create_mock_event(x=203, y=305))
+    assert tactool.graphics_view.ghost_point is None
+
     # Adjust the settings for the 2nd Analysis Point
     tactool.window.update_point_settings(
         sample_name="sample_x83",
@@ -36,6 +43,14 @@ def test_add_and_remove_points(tactool: TACtool, public_index: int):
     )
     tactool.graphics_view.left_click.emit(202, 202)
 
+    # Enable the ghost point and create it with a mouse movement event
+    tactool.window.menu_bar_tools_ghost_point.setChecked(True)
+    tactool.graphics_view.mouseMoveEvent(create_mock_event(x=203, y=305))
+    # Check that the ghost point inherits the correct settings
+    assert tactool.graphics_view.ghost_point.aslist()[:public_index] == AnalysisPoint(
+        3, "Spot", 203, 305, 50, 2.0, "#222222", "sample_x83", "mount_x81", "rock", "", None, None, None
+    ).aslist()[:public_index]
+
     # Adjust the settings for the 3rd Analysis Point
     # Purposefully making it overlap the 2nd Analysis Point
     tactool.window.update_point_settings(
@@ -70,6 +85,12 @@ def test_add_and_remove_points(tactool: TACtool, public_index: int):
     # Nothing should change
     tactool.graphics_view.right_click.emit(0, 0)
 
+    # Check that the ghost point uses the newly deleted ID value of 3
+    tactool.graphics_view.mouseMoveEvent(create_mock_event(x=176, y=301))
+    assert tactool.graphics_view.ghost_point.aslist()[:public_index] == AnalysisPoint(
+        3, "RefMark", 176, 301, 50, 2.0, "#333333", "sample_x67", "mount_x15", "duck", "", None, None, None
+    ).aslist()[:public_index]
+
     # Adjust the settings for the 4th Analysis Point to match those of the 2nd Analysis Point
     # This is done by emitting a signal from the PyQt Table View of the selected Analysis Point
     tactool.table_view.selected_analysis_point.emit(expected_data[1], 0)
@@ -89,6 +110,12 @@ def test_add_and_remove_points(tactool: TACtool, public_index: int):
         expected_ellipse = (expected_data[index].diameter * expected_data[index].scale) + offset
         assert analysis_point._outer_ellipse.boundingRect().width() == expected_ellipse
 
+    # Check that the ghost point inherits the correct settings
+    tactool.graphics_view.mouseMoveEvent(create_mock_event(x=82, y=288))
+    assert tactool.graphics_view.ghost_point.aslist()[:public_index] == AnalysisPoint(
+        4, "Spot", 82, 288, 50, 2.0, "#222222", "sample_x83", "mount_x81", "rock", "", None, None, None
+    ).aslist()[:public_index]
+
 
 def test_clear_points(tactool: TACtool):
     """