Merge "hotspot2: anqp: add parsing support for Icon File ANQP element"

1 files changed, 112 insertions, 0 deletions

diff --git a/tests/wifitests/src/com/android/server/wifi/hotspot2/anqp/HSIconFileElementTest.java b/tests/wifitests/src/com/android/server/wifi/hotspot2/anqp/HSIconFileElementTest.java
new file mode 100644
index 000000000..c72d1d0e0
--- /dev/null
+++ b/tests/wifitests/src/com/android/server/wifi/hotspot2/anqp/HSIconFileElementTest.java
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2017 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.hotspot2.anqp;
+
+import static org.junit.Assert.assertEquals;
+
+import android.test.suitebuilder.annotation.SmallTest;
+
+import org.junit.Test;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.BufferUnderflowException;
+import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
+
+/**
+ * Unit tests for {@link com.android.server.wifi.hotspot2.anqp.HSIconFileElement}.
+ */
+@SmallTest
+public class HSIconFileElementTest {
+    private static final String TEST_ICON_TYPE = "png";
+    private static final byte[] TEST_ICON_DATA = new byte[8];
+
+    /**
+     * Utility function for generating test data.
+     *
+     * @param statusCode Status code of the icon file download
+     * @return byte[]
+     */
+    private static byte[] getTestData(int statusCode) throws IOException {
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        out.write((byte) statusCode);
+        if (statusCode != HSIconFileElement.STATUS_CODE_SUCCESS) {
+            // No need to write other data if status code is not success.
+            return out.toByteArray();
+        }
+
+        byte[] iconTypeBytes = TEST_ICON_TYPE.getBytes(StandardCharsets.US_ASCII);
+        out.write(iconTypeBytes.length);
+        out.write(iconTypeBytes);
+        out.write(TEST_ICON_DATA.length & 0xFF);
+        out.write((TEST_ICON_DATA.length >> 8) & 0xFF);
+        out.write(TEST_ICON_DATA);
+        return out.toByteArray();
+    }
+
+    /**
+     * Verify that BufferUnderflowException will be thrown when parsing an empty buffer.
+     * @throws Exception
+     */
+    @Test(expected = BufferUnderflowException.class)
+    public void parseEmptyBuffer() throws Exception {
+        HSIconFileElement.parse(ByteBuffer.allocate(0));
+    }
+
+    /**
+     * Verify that BufferUnderflowException will be thrown when parsing a truncated buffer
+     * (missing a byte at the end).
+     *
+     * @throws Exception
+     */
+    @Test(expected = BufferUnderflowException.class)
+    public void parseTruncatedBuffer() throws Exception {
+        ByteBuffer buffer = ByteBuffer.wrap(getTestData(HSIconFileElement.STATUS_CODE_SUCCESS));
+        buffer.limit(buffer.remaining() - 1);
+        HSIconFileElement.parse(buffer);
+    }
+
+    /**
+     * Verify that an expected {@link HSIconFileElement} is returned when parsing a buffer
+     * containing icon data.
+     *
+     * @throws Exception
+     */
+    @Test
+    public void parseBufferWithIconData() throws Exception {
+        ByteBuffer buffer = ByteBuffer.wrap(getTestData(HSIconFileElement.STATUS_CODE_SUCCESS));
+        HSIconFileElement expected = new HSIconFileElement(
+                HSIconFileElement.STATUS_CODE_SUCCESS, TEST_ICON_TYPE, TEST_ICON_DATA);
+        assertEquals(expected, HSIconFileElement.parse(buffer));
+    }
+
+    /**
+     * Verify that an expected {@link HSIconFileElement} is returned when parsing a buffer
+     * without icon data (icon file not found).
+     *
+     * @throws Exception
+     */
+    @Test
+    public void parseBufferWithoutIconData() throws Exception {
+        ByteBuffer buffer =
+                ByteBuffer.wrap(getTestData(HSIconFileElement.STATUS_CODE_FILE_NOT_FOUND));
+        HSIconFileElement expected =
+                new HSIconFileElement(HSIconFileElement.STATUS_CODE_FILE_NOT_FOUND, null, null);
+        assertEquals(expected, HSIconFileElement.parse(buffer));
+    }
+}