Upgradle JUnit to 4.13 (#442)

* Upgradle JUnit to 4.13

Removed third_party/junit folder and all usage of the
JunitBackPort class. As a result, third_party is no
longer a Gradle subproject.

Minor code changes were needed to work around an
error-prone pattern: multiple statement in assertThrows'
runnable lambda.

Also third_party/activation and third_party/jsch. These
dependencies are loaded from remote maven repo. The local
copies are not in use.

util/src/test/java/google/registry/util/AppEngineServiceUtilsImplTest.java

@@ -15,7 +15,7 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
+import static org.junit.Assert.assertThrows;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.ArgumentMatchers.isNull;

util/src/test/java/google/registry/util/CidrAddressBlockTest.java

@@ -14,8 +14,8 @@
 
 package google.registry.util;
 
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertThrows;
 
 import com.google.common.collect.ImmutableMap;
 import com.google.common.net.InetAddresses;

util/src/test/java/google/registry/util/CollectionUtilsTest.java

@@ -15,9 +15,9 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static google.registry.util.CollectionUtils.nullToEmpty;
 import static google.registry.util.CollectionUtils.partitionMap;
+import static org.junit.Assert.assertThrows;
 
 import com.google.common.collect.HashMultimap;
 import com.google.common.collect.ImmutableList;

util/src/test/java/google/registry/util/ComparingInvocationHandlerTest.java

@@ -15,7 +15,7 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
+import static org.junit.Assert.assertThrows;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 

util/src/test/java/google/registry/util/DateTimeUtilsTest.java

@@ -15,7 +15,6 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static google.registry.util.DateTimeUtils.END_OF_TIME;
 import static google.registry.util.DateTimeUtils.START_OF_TIME;
 import static google.registry.util.DateTimeUtils.earliestOf;
@@ -26,6 +25,7 @@ import static google.registry.util.DateTimeUtils.leapSafeAddYears;
 import static google.registry.util.DateTimeUtils.leapSafeSubtractYears;
 import static google.registry.util.DateTimeUtils.toJodaDateTime;
 import static google.registry.util.DateTimeUtils.toZonedDateTime;
+import static org.junit.Assert.assertThrows;
 
 import com.google.common.collect.ImmutableList;
 import java.time.ZonedDateTime;

util/src/test/java/google/registry/util/DomainNameUtilsTest.java

@@ -15,9 +15,9 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static google.registry.util.DomainNameUtils.canonicalizeDomainName;
 import static google.registry.util.DomainNameUtils.getSecondLevelDomain;
+import static org.junit.Assert.assertThrows;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

util/src/test/java/google/registry/util/HexDumperTest.java

@@ -15,8 +15,8 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.junit.Assert.assertThrows;
 
 import java.io.StringWriter;
 import org.junit.Test;

util/src/test/java/google/registry/util/PosixTarHeaderTest.java

@@ -17,8 +17,8 @@ package google.registry.util;
 import static com.google.common.io.BaseEncoding.base64;
 import static com.google.common.truth.Truth.assertThat;
 import static com.google.common.truth.Truth.assertWithMessage;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static java.nio.charset.StandardCharsets.UTF_8;
+import static org.junit.Assert.assertThrows;
 
 import com.google.common.testing.EqualsTester;
 import java.io.ByteArrayInputStream;
@@ -47,8 +47,7 @@ public class PosixTarHeaderTest {
     byte[] gnuTarGeneratedData =
         base64()
             .decode(
-                ""
-                    + "aGVsbG8ueG1sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
+                "aGVsbG8ueG1sAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
                     + "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAADAwMDA2NDAAMDU0MTI2"
                     + "NgAwMDExNjEwADAwMDAwMDAwMDE0ADEyMjAyMzEwMzI0ADAxMjQ2MQAgMAAAAAAAAAAAAAAAAAAA"
                     + "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"

util/src/test/java/google/registry/util/RetrierTest.java

@@ -15,7 +15,7 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
+import static org.junit.Assert.assertThrows;
 
 import google.registry.testing.FakeClock;
 import google.registry.testing.FakeSleeper;
@@ -94,6 +94,7 @@ public class RetrierTest {
   }
 
   @Test
+  @SuppressWarnings("AssertThrowsMultipleStatements")
   public void testRetryFailed_withReporter() {
     CountingException thrown =
         assertThrows(

util/src/test/java/google/registry/util/SendEmailServiceTest.java

@@ -15,7 +15,7 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
+import static org.junit.Assert.assertThrows;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.doThrow;
 import static org.mockito.Mockito.mock;

util/src/test/java/google/registry/util/SerializeUtilsTest.java

@@ -15,9 +15,9 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static google.registry.util.SerializeUtils.deserialize;
 import static google.registry.util.SerializeUtils.serialize;
+import static org.junit.Assert.assertThrows;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

util/src/test/java/google/registry/util/SqlTemplateTest.java

@@ -15,7 +15,7 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
+import static org.junit.Assert.assertThrows;
 
 import org.junit.Test;
 import org.junit.runner.RunWith;

util/src/test/java/google/registry/util/TeeOutputStreamTest.java

@@ -15,9 +15,9 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
 import static java.nio.charset.StandardCharsets.UTF_8;
 import static java.util.Arrays.asList;
+import static org.junit.Assert.assertThrows;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;

util/src/test/java/google/registry/util/TypeUtilsTest.java

@@ -15,7 +15,7 @@
 package google.registry.util;
 
 import static com.google.common.truth.Truth.assertThat;
-import static google.registry.testing.JUnitBackports.assertThrows;
+import static org.junit.Assert.assertThrows;
 
 import java.io.Serializable;
 import java.util.ArrayList;