replace underlines with spaces in parameter names (fixes #147)

CHANGELOG.md

@@ -8,6 +8,7 @@
 ## New Features
 
 * Scenarios without steps can now be excluded from the report by using the new `--exclude-empty-scenarios` report generator option [#151](https://github.com/TNG/JGiven/issues/151)
+* Underlines in parameter names are now replaced with spaces [#147](https://github.com/TNG/JGiven/issues/147)
 
 # v0.9.3
 

jgiven-core/src/main/java/com/tngtech/jgiven/impl/ScenarioModelBuilder.java

@@ -225,7 +225,15 @@ public void setArguments( List<String> arguments ) {
     }
 
     public void setParameterNames( List<String> parameterNames ) {
-        scenarioModel.setExplicitParameters( parameterNames );
+        scenarioModel.setExplicitParameters( removeUnderlines( parameterNames ) );
+    }
+
+    private static List<String> removeUnderlines( List<String> parameterNames ) {
+        List<String> result = Lists.newArrayListWithCapacity( parameterNames.size() );
+        for( String paramName : parameterNames ) {
+            result.add( WordUtil.fromSnakeCase( paramName ) );
+        }
+        return result;
     }
 
     private String getDescription( Method paramMethod ) {
@@ -273,7 +281,7 @@ private List<String> getStackTrace( Throwable exception, boolean filterStackTrac
     }
 
     private static String nameWithoutUnderlines( Method paramMethod ) {
-        return paramMethod.getName().replace( '_', ' ' );
+        return WordUtil.fromSnakeCase( paramMethod.getName() );
     }
 
     @Override

jgiven-core/src/main/java/com/tngtech/jgiven/impl/util/WordUtil.java

@@ -65,4 +65,7 @@ public static String splitCamelCaseToReadableText( String camelCase ) {
             );
     }
 
+    public static String fromSnakeCase( String name ) {
+        return name.replace( '_', ' ' );
+    }
 }

jgiven-core/src/main/java/com/tngtech/jgiven/report/model/StepFormatter.java

@@ -20,6 +20,7 @@
 import com.tngtech.jgiven.impl.util.AnnotationUtil;
 import com.tngtech.jgiven.impl.util.ApiUtil;
 import com.tngtech.jgiven.impl.util.ReflectionUtil;
+import com.tngtech.jgiven.impl.util.WordUtil;
 
 public class StepFormatter {
     public static final String DEFAULT_NUMBERED_HEADER = "#";
@@ -416,7 +417,7 @@ private void addArgument( List<Word> formattedWords, int argCount, CharSequence
                 "Parameters annotated with @Table must be the last ones. They cannot be used for $ substitution" );
         }
         String formattedValue = formatUsingFormatterOrNull( formatter, value );
-        String argumentName = arguments.get( index ).name;
+        String argumentName = WordUtil.fromSnakeCase( arguments.get( index ).name );
 
         formattedWords.add( Word.argWord( argumentName, defaultFormattedValue, formattedValue ) );
     }

jgiven-examples/src/test/java/com/tngtech/jgiven/examples/coffeemachine/ServeCoffeeTest.java

@@ -5,6 +5,7 @@
 
 import com.tngtech.java.junit.dataprovider.DataProvider;
 import com.tngtech.java.junit.dataprovider.DataProviderRunner;
+import com.tngtech.jgiven.StepFunction;
 import com.tngtech.jgiven.annotation.Description;
 import com.tngtech.jgiven.examples.coffeemachine.steps.GivenCoffee;
 import com.tngtech.jgiven.examples.coffeemachine.steps.ThenCoffee;
@@ -67,10 +68,10 @@ public void not_enough_money_message_is_shown_when_insufficient_money_was_given(
         "0, 5, Error: No coffees left",
         "1, 5, Enjoy your coffee!",
     } )
-    public void correct_messages_are_shown( int coffeesLeft, int numberOfCoins, String message ) throws Exception {
+    public void correct_messages_are_shown( int coffees_left, int number_of_coins, String message ) throws Exception {
         given().a_coffee_machine()
-            .and().there_are_$_coffees_left_in_the_machine( coffeesLeft );
-        when().I_insert_$_one_euro_coins( numberOfCoins )
+            .and().there_are_$_coffees_left_in_the_machine( coffees_left );
+        when().I_insert_$_one_euro_coins( number_of_coins )
             .and().I_press_the_coffee_button();
         then().the_message_$_is_shown( message );
     }
@@ -79,13 +80,13 @@ public void correct_messages_are_shown( int coffeesLeft, int numberOfCoins, Stri
     @FeatureDataTables
     @Issue( "#15" )
     @DataProvider( { "1", "3", "10" } )
-    public void serving_a_coffee_reduces_the_number_of_available_coffees_by_one( int initialCoffees ) {
+    public void serving_a_coffee_reduces_the_number_of_available_coffees_by_one( int initial_coffees ) {
         given().a_coffee_machine()
-            .and().there_are_$_coffees_left_in_the_machine( initialCoffees );
+            .and().there_are_$_coffees_left_in_the_machine( initial_coffees );
         when().I_insert_$_one_euro_coins( 2 )
             .and().I_press_the_coffee_button();
         then().a_coffee_should_be_served()
-            .and().there_are_$_coffees_left_in_the_machine( initialCoffees - 1 );
+            .and().there_are_$_coffees_left_in_the_machine( initial_coffees - 1 );
     }
 
     @Test
@@ -161,4 +162,16 @@ public void intro_words_are_not_required() {
         then().an_error_should_be_shown()
             .no_coffee_should_be_served();
     }
+
+    @Test( timeout = 1000 )
+    public void shouldFailWithUnexpectedRuntimeException() throws Exception {
+        then().$( "should throw a runtime exception", //$NON-NLS-1$
+            new StepFunction<ThenCoffee>() {
+                @Override
+                public void apply( final ThenCoffee stage )
+                        throws Exception {
+                    Thread.sleep( 2000 );
+                }
+            } );
+    }
 }

jgiven-examples/src/test/java/com/tngtech/jgiven/examples/coffeemachine/steps/ThenCoffee.java

@@ -49,8 +49,8 @@ public ThenCoffee an_error_should_be_shown() {
         return self();
     }
 
-    public ThenCoffee there_are_$_coffees_left_in_the_machine( int coffeesLeft ) {
-        assertThat( coffeeMachine.coffees ).isEqualTo( coffeesLeft );
+    public ThenCoffee there_are_$_coffees_left_in_the_machine( int coffees_left ) {
+        assertThat( coffeeMachine.coffees ).isEqualTo( coffees_left );
         return self();
     }
 

jgiven-junit/src/test/java/com/tngtech/jgiven/junit/DataProviderTest.java

@@ -44,6 +44,15 @@ public void DataProviderRunner_can_be_used( int intArg, boolean booleanArg, int
         assertThat( arguments ).containsExactly( "" + intArg, "" + booleanArg, "" + caseNr );
     }
 
+    @Test
+    @DataProvider( { "0", "1" } )
+    public void underlines_in_parameters_are_replaced_with_spaces( int int_arg ) {
+        given().some_integer_value( int_arg );
+
+        List<String> explicitParameters = getScenario().getScenarioModel().getExplicitParameters();
+        assertThat( explicitParameters ).containsExactly( "int arg" );
+    }
+
     @DataProvider
     public static Object[][] trickyData() {
         return new Object[][] {

jgiven-tests/src/test/java/com/tngtech/jgiven/impl/ScenarioExecutorTest.java

@@ -49,7 +49,7 @@ public void some_stage_with_method_called_during_construction() {}
 
         public void the_scenario_is_executed() {}
 
-        public void no_exeception_is_thrown() {
+        public void no_exception_is_thrown() {
             assertThat( true ).as( "no exception is thrown" ).isTrue();
         }
 
@@ -85,6 +85,6 @@ public static Object[][] primitiveArrays() {
     public void step_methods_can_have_primitive_arrays_as_parameters( String type, Object array ) {
         given().a_step_method_with_a_primitive_$_array_$_as_parameter( type, array );
         when().the_scenario_is_executed();
-        then().no_exeception_is_thrown();
+        then().no_exception_is_thrown();
     }
 }