From 156b3074d92b7e600854bffe63a448a1d00e8dea Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ciar=C3=A1n=20Mooney?= <admin@cmooney.co.uk>
Date: Thu, 30 Apr 2026 20:23:52 +0100
Subject: [PATCH] Added tests for WholeDiffFilter

---
 .../filter/WholeDiffFilterTest.java           | 70 +++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 diff-checkstyle/src/test/java/io/github/yangziwen/checkstyle/filter/WholeDiffFilterTest.java

diff --git a/diff-checkstyle/src/test/java/io/github/yangziwen/checkstyle/filter/WholeDiffFilterTest.java b/diff-checkstyle/src/test/java/io/github/yangziwen/checkstyle/filter/WholeDiffFilterTest.java
new file mode 100644
index 0000000..257dba9
--- /dev/null
+++ b/diff-checkstyle/src/test/java/io/github/yangziwen/checkstyle/filter/WholeDiffFilterTest.java
@@ -0,0 +1,70 @@
+package io.github.yangziwen.checkstyle.filter;
+
+import com.puppycrawl.tools.checkstyle.api.AuditEvent;
+import com.puppycrawl.tools.checkstyle.api.Filter;
+import com.puppycrawl.tools.checkstyle.api.Violation;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+public class WholeDiffFilterTest {
+
+    @Test
+    public void acceptEmptyList() {
+        Filter filter = new WholeDiffFilter(Collections.emptyList());
+        AuditEvent event = buildAuditEvent();
+        boolean result = filter.accept(event);
+        assertFalse(result);
+    }
+
+    @Test
+    public void acceptUnmatched() {
+        List<String> checks = Collections.singletonList("something");
+        Filter filter = new WholeDiffFilter(checks);
+        AuditEvent event = buildAuditEvent();
+        boolean result = filter.accept(event);
+        assertFalse(result);
+    }
+
+    @Test
+    public void acceptMatchOne() {
+        List<String> checks = new ArrayList<>();
+        checks.add("something");
+        checks.add("java.lang.Object");
+        Filter filter = new WholeDiffFilter(checks);
+        AuditEvent event = buildAuditEvent();
+        boolean result = filter.accept(event);
+        assertTrue(result);
+    }
+
+    @Test
+    public void acceptPartialMatch() {
+        List<String> checks = Collections.singletonList("Object");
+        Filter filter = new WholeDiffFilter(checks);
+        AuditEvent event = buildAuditEvent();
+        boolean result = filter.accept(event);
+        assertTrue(result);
+    }
+
+
+    @Test
+    public void acceptSingleMatch() {
+        List<String> checks = Collections.singletonList("java.lang.Object");
+        Filter filter = new WholeDiffFilter(checks);
+        AuditEvent event = buildAuditEvent();
+        boolean result = filter.accept(event);
+        assertTrue(result);
+    }
+
+    private static AuditEvent buildAuditEvent() {
+        Object source = new Object();
+        Class<?> sourceClass = Object.class;
+        Violation violation = new Violation(0, "", "", null, "", sourceClass, "");
+        return new AuditEvent(source, "", violation);
+    }
+}
\ No newline at end of file