Handle GV2 addresses.

app/src/test/java/org/thoughtcrime/securesms/util/Base64UrlSafeTest.java

@@ -0,0 +1,66 @@
+package org.thoughtcrime.securesms.util;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collection;
+
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertEquals;
+
+@RunWith(Parameterized.class)
+public final class Base64UrlSafeTest {
+
+  private final byte[] data;
+  private final String encoded;
+  private final String encodedWithoutPadding;
+
+  @Parameterized.Parameters
+  public static Collection<Object[]> data() {
+    return Arrays.asList(new Object[][]{
+      { "", "", "" },
+      { "01", "AQ==", "AQ" },
+      { "0102", "AQI=", "AQI" },
+      { "010203", "AQID", "AQID" },
+      { "030405", "AwQF", "AwQF" },
+      { "03040506", "AwQFBg==", "AwQFBg" },
+      { "0304050708", "AwQFBwg=", "AwQFBwg" },
+      { "af4d6cff", "r01s_w==", "r01s_w" },
+      { "ffefde", "_-_e", "_-_e" },
+    });
+  }
+
+  public Base64UrlSafeTest(String hexData, String encoded, String encodedWithoutPadding) throws IOException {
+    this.data                  = Hex.fromStringCondensed(hexData);
+    this.encoded               = encoded;
+    this.encodedWithoutPadding = encodedWithoutPadding;
+  }
+
+  @Test
+  public void encodes_as_expected() {
+    assertEquals(encoded, Base64UrlSafe.encodeBytes(data));
+  }
+
+  @Test
+  public void encodes_as_expected_without_padding() {
+    assertEquals(encodedWithoutPadding, Base64UrlSafe.encodeBytesWithoutPadding(data));
+  }
+
+  @Test
+  public void decodes_as_expected() throws IOException {
+    assertArrayEquals(data, Base64UrlSafe.decode(encoded));
+  }
+
+  @Test
+  public void decodes_padding_agnostic_as_expected() throws IOException {
+    assertArrayEquals(data, Base64UrlSafe.decodePaddingAgnostic(encoded));
+  }
+
+  @Test
+  public void decodes_as_expected_without_padding() throws IOException {
+    assertArrayEquals(data, Base64UrlSafe.decodePaddingAgnostic(encodedWithoutPadding));
+  }
+}