Fix/naming within junit test (#3126)

* synchronize test-methode's name and result String

* synchronize variable name and referred method's number of arguments

Author: antagoony

cucumber-java/src/test/java/io/cucumber/java/JavaDefaultParameterTransformerDefinitionTest.java

@@ -79,7 +79,7 @@ void must_have_two_arguments() throws Throwable {
     }
 
     public Object one_argument(String fromValue) {
-        return "one_arguments";
+        return "one_argument";
     }
 
     public Object three_arguments(String fromValue, Type toValueType, Object extra) {
@@ -88,10 +88,10 @@ public Object three_arguments(String fromValue, Type toValueType, Object extra)
 
     @Test
     void must_have_string_or_object_as_from_value() throws Throwable {
-        Method threeArg = JavaDefaultParameterTransformerDefinitionTest.class.getMethod("map_as_from_value", Map.class,
+        Method twoArg = JavaDefaultParameterTransformerDefinitionTest.class.getMethod("map_as_from_value", Map.class,
             Type.class);
         assertThrows(InvalidMethodSignatureException.class,
-            () -> new JavaDefaultParameterTransformerDefinition(threeArg, lookup));
+            () -> new JavaDefaultParameterTransformerDefinition(twoArg, lookup));
     }
 
     public Object map_as_from_value(Map<String, String> fromValue, Type toValueType) {
@@ -100,10 +100,10 @@ public Object map_as_from_value(Map<String, String> fromValue, Type toValueType)
 
     @Test
     void must_have_type_as_to_value_type() throws Throwable {
-        Method threeArg = JavaDefaultParameterTransformerDefinitionTest.class.getMethod("object_as_to_value_type",
+        Method twoArg = JavaDefaultParameterTransformerDefinitionTest.class.getMethod("object_as_to_value_type",
             String.class, Object.class);
         assertThrows(InvalidMethodSignatureException.class,
-            () -> new JavaDefaultParameterTransformerDefinition(threeArg, lookup));
+            () -> new JavaDefaultParameterTransformerDefinition(twoArg, lookup));
     }
 
     public Object object_as_to_value_type(String fromValue, Object toValueType) {