Utility class for user disconnect lock list

Every entry in the lock list has a CounteTimer, when missed count reach
the threshhold, timer will start. When timer expired, that entry will be
remove from the lock list.

Bug: 136005248
Test: atest com.android.server.wifi
Change-Id: I11669f18246320477ddc16cd83487a8bd56dec1f

1 files changed, 86 insertions, 0 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/util/MissingCounterTimerLockListTest.java b/tests/wifitests/src/com/android/server/wifi/util/MissingCounterTimerLockListTest.java
new file mode 100644
index 000000000..c145f7fb7
--- /dev/null
+++ b/tests/wifitests/src/com/android/server/wifi/util/MissingCounterTimerLockListTest.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2020 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.server.wifi.util;
+
+import static org.junit.Assert.*;
+import static org.mockito.Mockito.when;
+
+import androidx.test.filters.SmallTest;
+
+import com.android.server.wifi.Clock;
+import com.android.server.wifi.WifiBaseTest;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import java.util.HashSet;
+import java.util.Set;
+
+@SmallTest
+public class MissingCounterTimerLockListTest extends WifiBaseTest {
+    private static final int TEST_MISSING_COUNT = 2;
+    private static final long BLOCKING_DURATION = 1000;
+    private static final String TEST_SSID = "testSSID";
+    private static final String TEST_FQDN = "testFQDN";
+
+    private MissingCounterTimerLockList<String> mMissingCounterTimerLockList;
+
+    @Mock Clock mClock;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mMissingCounterTimerLockList =
+                new MissingCounterTimerLockList<>(TEST_MISSING_COUNT, mClock);
+    }
+
+    @Test
+    public void testAddRemove() {
+        mMissingCounterTimerLockList.add(TEST_SSID, BLOCKING_DURATION);
+        mMissingCounterTimerLockList.add(TEST_FQDN, BLOCKING_DURATION);
+        mMissingCounterTimerLockList.add(null, BLOCKING_DURATION);
+        assertEquals(2, mMissingCounterTimerLockList.size());
+        assertTrue(mMissingCounterTimerLockList.isLocked(TEST_SSID));
+        assertTrue(mMissingCounterTimerLockList.isLocked(TEST_FQDN));
+        assertTrue(mMissingCounterTimerLockList.remove(TEST_SSID));
+        assertEquals(1, mMissingCounterTimerLockList.size());
+        assertFalse(mMissingCounterTimerLockList.isLocked(TEST_SSID));
+        assertTrue(mMissingCounterTimerLockList.isLocked(TEST_FQDN));
+        mMissingCounterTimerLockList.clear();
+        assertEquals(0, mMissingCounterTimerLockList.size());
+    }
+
+    @Test
+    public void testUpdateAndTimer() {
+        mMissingCounterTimerLockList.add(TEST_SSID, BLOCKING_DURATION);
+        mMissingCounterTimerLockList.add(TEST_FQDN, BLOCKING_DURATION);
+        assertEquals(2, mMissingCounterTimerLockList.size());
+        when(mClock.getWallClockMillis()).thenReturn((long) 0);
+        Set<String> updateSet = new HashSet<>();
+        updateSet.add(TEST_FQDN);
+        mMissingCounterTimerLockList.update(updateSet);
+        assertEquals(2, mMissingCounterTimerLockList.size());
+        mMissingCounterTimerLockList.update(updateSet);
+        assertEquals(2, mMissingCounterTimerLockList.size());
+        when(mClock.getWallClockMillis()).thenReturn(BLOCKING_DURATION + 50);
+        assertEquals(2, mMissingCounterTimerLockList.size());
+        assertFalse(mMissingCounterTimerLockList.isLocked(TEST_SSID));
+        assertTrue(mMissingCounterTimerLockList.isLocked(TEST_FQDN));
+    }
+}