Add unit tests for PrioritySorterRestriction class to address JENKINS…

…-69757 (#408)

* Add Unit Tests for Priority Handling in PrioritySorterRestriction

* Fix code formatting violations as per Spotless.

* Test per method and use symbolic constants

---------

Co-authored-by: TOMMASO SORRENTINO <[email protected]>
Co-authored-by: Mark Waite <[email protected]>

src/test/java/jenkins/advancedqueue/jobrestrictions/PrioritySorterRestrictionTest.java

@@ -0,0 +1,88 @@
+package jenkins.advancedqueue.jobrestrictions;
+
+import static hudson.model.Queue.*;
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+import hudson.model.Run;
+import java.lang.reflect.Field;
+import jenkins.advancedqueue.sorter.ItemInfo;
+import jenkins.advancedqueue.sorter.QueueItemCache;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.ValueSource;
+import org.mockito.MockedStatic;
+
+class PrioritySorterRestrictionTest {
+
+    private PrioritySorterRestriction restriction;
+    private BuildableItem mockedBuildableItem;
+    private static final long MOCKED_BUILDABLE_ITEM_ID = 1L;
+    private static final int LOWER_PRIORITY = 1;
+    private static final int UPPER_PRIORITY = 1;
+
+    @BeforeEach
+    void setUp() {
+        this.restriction = new PrioritySorterRestriction(LOWER_PRIORITY, UPPER_PRIORITY);
+        this.mockedBuildableItem = mock(BuildableItem.class);
+        when(mockedBuildableItem.getId()).thenReturn(MOCKED_BUILDABLE_ITEM_ID);
+    }
+
+    @Test
+    void testCanTake_MissingItemInfo() throws NoSuchFieldException, IllegalAccessException {
+        Task mockedTask = mock(Task.class);
+        setTaskInMockedBuildableItem(mockedBuildableItem, mockedTask);
+
+        try (MockedStatic<QueueItemCache> mockedQueueItemCache = mockStatic(QueueItemCache.class)) {
+            QueueItemCache mockedItemCache = mock(QueueItemCache.class);
+            mockedQueueItemCache.when(QueueItemCache::get).thenReturn(mockedItemCache);
+            when(mockedItemCache.getItem(MOCKED_BUILDABLE_ITEM_ID)).thenReturn(null);
+            assertTrue(restriction.canTake(mockedBuildableItem));
+        }
+    }
+
+    private void setTaskInMockedBuildableItem(BuildableItem buildableItem, Task task)
+            throws NoSuchFieldException, IllegalAccessException {
+        Field taskField = BuildableItem.class.getField("task");
+        taskField.setAccessible(true);
+        taskField.set(buildableItem, task);
+    }
+
+    @ParameterizedTest
+    @ValueSource(ints = {0, 3, 6})
+    void testCanTake_PriorityRange(int priority) {
+        ItemInfo mockItemInfo = mock(ItemInfo.class);
+        when(mockItemInfo.getPriority()).thenReturn(priority);
+
+        try (MockedStatic<QueueItemCache> mockedCache = mockStatic(QueueItemCache.class)) {
+            QueueItemCache mockCache = mock(QueueItemCache.class);
+            mockedCache.when(QueueItemCache::get).thenReturn(mockCache);
+            when(mockCache.getItem(MOCKED_BUILDABLE_ITEM_ID)).thenReturn(mockItemInfo);
+            if (priority >= LOWER_PRIORITY && priority <= UPPER_PRIORITY)
+                assertTrue(
+                        restriction.canTake(mockedBuildableItem),
+                        "Should allow execution when priority is within range.");
+            else
+                assertFalse(
+                        restriction.canTake(mockedBuildableItem),
+                        "Should not allow execution when priority is outside range.");
+        }
+    }
+
+    @Test
+    void testCanTake() {
+        Run mockedRun = mock(Run.class);
+        assertTrue(restriction.canTake(mockedRun), "canTake should return true when passed a Run object.");
+    }
+
+    @Test
+    void testGetFromPriority() {
+        assertEquals(LOWER_PRIORITY, restriction.getFromPriority(), "From Priority should be " + LOWER_PRIORITY);
+    }
+
+    @Test
+    void testGetToPriority() {
+        assertEquals(UPPER_PRIORITY, restriction.getToPriority(), "To Priority should be " + UPPER_PRIORITY);
+    }
+}