Profile gRPC: Define getUnversionedProfile endpoint

service/src/test/java/org/whispersystems/textsecuregcm/auth/UnidentifiedAccessChecksumTest.java

@@ -0,0 +1,39 @@
+package org.whispersystems.textsecuregcm.auth;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
+import java.security.SecureRandom;
+import java.util.Base64;
+import java.util.stream.Stream;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+public class UnidentifiedAccessChecksumTest {
+  @ParameterizedTest
+  @MethodSource
+  public void generateFor(final byte[] unidentifiedAccessKey, final byte[] expectedChecksum) {
+    final byte[] checksum = UnidentifiedAccessChecksum.generateFor(unidentifiedAccessKey);
+
+    assertArrayEquals(expectedChecksum, checksum);
+  }
+
+  private static Stream<Arguments> generateFor() {
+    return Stream.of(
+        Arguments.of(Base64.getDecoder().decode("hqqo9upWeC0HSHOSJcXl/Q=="),
+            Base64.getDecoder().decode("2DNxpQCjTefuEhdvJayIbAVUcZSXotu8nqXwWr+q6hI=")),
+        Arguments.of(Base64.getDecoder().decode("0bNEmhGzmxBsDYhEhk+bAw=="),
+            Base64.getDecoder().decode("gJTodQfP8TUITZhvrWr0t1siDZXYxRQ/qdpNB8jC+yc="))
+    );
+  }
+
+  @Test
+  public void generateForIllegalArgument() {
+    final byte[] invalidLengthUnidentifiedAccessKey = new byte[15];
+    new SecureRandom().nextBytes(invalidLengthUnidentifiedAccessKey);
+
+    assertThrows(IllegalArgumentException.class, () -> UnidentifiedAccessChecksum.generateFor(invalidLengthUnidentifiedAccessKey));
+  }
+}