[java] Setting small size tag to firefox driver unit tests

Author: barancev

java/client/test/org/openqa/selenium/firefox/BUILD.bazel

@@ -8,8 +8,8 @@ LARGE_TESTS = [
 ]
 
 java_test_suite(
-    name = "medium-tests",
-    size = "medium",
+    name = "small-tests",
+    size = "small",
     srcs = glob(
         ["*.java"],
         exclude = LARGE_TESTS,

java/client/test/org/openqa/selenium/firefox/FirefoxOptionsTest.java

@@ -22,6 +22,7 @@
 import static java.util.Collections.singleton;
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
+import static org.assertj.core.api.Assertions.assertThatNoException;
 import static org.assertj.core.api.Assumptions.assumeThat;
 import static org.assertj.core.api.InstanceOfAssertFactories.LIST;
 import static org.assertj.core.api.InstanceOfAssertFactories.MAP;
@@ -261,7 +262,7 @@ public void shouldThrowAnExceptionIfSystemPropertyProfileDoesNotExist() {
   public void callingToStringWhenTheBinaryDoesNotExistShouldNotCauseAnException() {
     FirefoxOptions options =
       new FirefoxOptions().setBinary("there's nothing better in life than cake or peas.");
-    options.toString();
+    assertThatNoException().isThrownBy(options::toString);
     // The binary does not exist on this machine, but could do elsewhere. Be chill.
   }