1 files changed, 105 insertions, 0 deletions
diff --git a/adservices/tests/unittest/service-core/src/com/android/adservices/service/measurement/util/UnsignedLongTest.java b/adservices/tests/unittest/service-core/src/com/android/adservices/service/measurement/util/UnsignedLongTest.java
new file mode 100644
index 0000000000..170b006802
--- /dev/null
+++ b/adservices/tests/unittest/service-core/src/com/android/adservices/service/measurement/util/UnsignedLongTest.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.adservices.service.measurement.util;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertThrows;
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+
+public class UnsignedLongTest {
+    private static final UnsignedLong ULONG_LONG = new UnsignedLong(2L);
+    private static final UnsignedLong ULONG_STR = new UnsignedLong("2");
+    private static final UnsignedLong LARGE = new UnsignedLong("9223372036854775808");
+    private static final UnsignedLong LARGER = new UnsignedLong("9223372036854775809");
+
+    @Test
+    public void testEqualsPass() {
+        assertEquals(ULONG_STR, ULONG_STR);
+        assertEquals(ULONG_STR, ULONG_LONG);
+        assertEquals(ULONG_LONG, ULONG_LONG);
+    }
+
+    @Test
+    public void testEqualsFail() {
+        assertNotEquals(ULONG_LONG, new UnsignedLong(3L));
+        assertNotEquals(ULONG_STR, new UnsignedLong(3L));
+    }
+
+    @Test
+    public void testCompareTo_equal() {
+        assertTrue(ULONG_LONG.compareTo(ULONG_STR) == 0);
+        assertTrue(LARGE.compareTo(new UnsignedLong("9223372036854775808")) == 0);
+    }
+
+    @Test
+    public void testCompareTo_smaller() {
+        assertTrue(ULONG_LONG.compareTo(new UnsignedLong(3L)) < 0);
+        assertTrue(ULONG_LONG.compareTo(LARGE) < 0);
+        assertTrue(LARGE.compareTo(LARGER) < 0);
+    }
+
+    @Test
+    public void testCompareTo_larger() {
+        assertTrue(ULONG_LONG.compareTo(new UnsignedLong(1L)) > 0);
+        assertTrue(LARGE.compareTo(ULONG_LONG) > 0);
+        assertTrue(LARGER.compareTo(LARGE) > 0);
+    }
+
+    @Test
+    public void testHashCode_equals() {
+        assertEquals(ULONG_STR.hashCode(), ULONG_STR.hashCode());
+        assertEquals(ULONG_STR.hashCode(), ULONG_LONG.hashCode());
+        assertEquals(ULONG_LONG.hashCode(), ULONG_LONG.hashCode());
+    }
+
+    @Test
+    public void testHashCode_notEquals() {
+        assertNotEquals(ULONG_LONG.hashCode(), new UnsignedLong(3L).hashCode());
+        assertNotEquals(ULONG_STR.hashCode(), new UnsignedLong(3L).hashCode());
+    }
+
+    @Test
+    public void testValidateConstructorArgument_long() {
+        Long arg = null;
+        assertThrows(
+                IllegalArgumentException.class,
+                () -> new UnsignedLong(arg));
+    }
+
+    @Test
+    public void testValidateConstructorArgument_string() {
+        String arg = null;
+        assertThrows(
+                IllegalArgumentException.class,
+                () -> new UnsignedLong(arg));
+    }
+
+    @Test
+    public void testMod() {
+        // uint64 18446744073709501613 = long -50003
+        // 18446744073709501613 % 8 = 5
+        assertEquals(new UnsignedLong(5L), new UnsignedLong(-50003L).mod(8));
+    }
+
+    @Test
+    public void testToString() {
+        assertEquals("18446744073709551615", new UnsignedLong(-1L).toString());
+    }
+}