message: Fix typos in PrimitiveRegistryTest.
diff: @@ -129,7 +129,7 @@ public final class PrimitiveRegistryTest {
  }
  @Test
  - public void test_registerSameSerializerTwice_works() throws Exception {
  + public void test_registerSameConstructorTwice_works() throws Exception {
  PrimitiveConstructor<TestKey1, TestPrimitiveA> testPrimitiveConstructor =
  PrimitiveConstructor.create(
  PrimitiveRegistryTest::getPrimitiveAKey1, TestKey1.class, TestPrimitiveA.class);
  @@ -140,7 +140,7 @@ public final class PrimitiveRegistryTest {
  }
  @Test
  - public void test_registerDifferentSerializerWithSameKeyType_throws() throws Exception {
  + public void test_registerDifferentConstructorWithSameKeyType_throws() throws Exception {
  PrimitiveConstructor<TestKey1, TestPrimitiveA> testPrimitiveConstructor1 =
  PrimitiveConstructor.create(
  PrimitiveRegistryTest::getPrimitiveAKey1, TestKey1.class, TestPrimitiveA.class);
  @@ -155,7 +155,7 @@ public final class PrimitiveRegistryTest {
  }
  @Test
  - public void test_registerDifferentSerializerWithDifferentKeyType_works() throws Exception {
  + public void test_registerDifferentConstructorWithDifferentKeyType_works() throws Exception {
  PrimitiveConstructor<TestKey1, TestPrimitiveA> testPrimitiveConstructor1 =
  PrimitiveConstructor.create(
  PrimitiveRegistryTest::getPrimitiveAKey1, TestKey1.class, TestPrimitiveA.class);
  @@ -169,7 +169,7 @@ public final class PrimitiveRegistryTest {
  }
  @Test
  - public void test_registerDifferentSerializerWithDifferentPrimitiveType_works()
  + public void test_registerDifferentConstructorWithDifferentPrimitiveType_works()
  throws Exception {
  PrimitiveConstructor<TestKey1, TestPrimitiveA> testPrimitiveConstructor1 =
  PrimitiveConstructor.create(
  