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How to use StepFunction class of com.tngtech.jgiven package
Best JGiven code snippet using com.tngtech.jgiven.StepFunction
Source:ServeCoffeeTest.java 
...4import org.junit.Test;5import org.junit.runner.RunWith;6import com.tngtech.java.junit.dataprovider.DataProvider;7import com.tngtech.java.junit.dataprovider.DataProviderRunner;8import com.tngtech.jgiven.StepFunction;9import com.tngtech.jgiven.annotation.Description;10import com.tngtech.jgiven.examples.coffeemachine.steps.GivenCoffee;11import com.tngtech.jgiven.examples.coffeemachine.steps.ThenCoffee;12import com.tngtech.jgiven.examples.coffeemachine.steps.WhenCoffee;13import com.tngtech.jgiven.examples.tags.Order;14import com.tngtech.jgiven.examples.tags.TagsWithCustomStyle;15import com.tngtech.jgiven.junit.ScenarioTest;16import com.tngtech.jgiven.tags.FeatureCaseDiffs;17import com.tngtech.jgiven.tags.FeatureDataTables;18import com.tngtech.jgiven.tags.Issue;19/**20 * Original example due to Cucumber Wiki.21 */22@RunWith( DataProviderRunner.class )23@Description( "In order to refresh myself</br>" +24 "as a customer</br>" +25 "I want coffee to be served" )26public class ServeCoffeeTest extends ScenarioTest<GivenCoffee, WhenCoffee, ThenCoffee> {27 @Test28 @Order( "1" )29 public void an_empty_coffee_machine_cannot_serve_any_coffee() throws Exception {30 given().an_empty_coffee_machine();31 when().I_insert_$_one_euro_coins( 5 )32 .and().I_press_the_coffee_button();33 then().an_error_should_be_shown()34 .and().no_coffee_should_be_served();35 }36 @Test37 @Order( "2" )38 public void no_coffee_left_error_is_shown_when_there_is_no_coffee_left() {39 given().an_empty_coffee_machine();40 when().I_insert_$_one_euro_coins( 5 )41 .and().I_press_the_coffee_button();42 then().the_message_$_is_shown( "Error: No coffees left" );43 }44 @Test45 @Order( "3" )46 public void not_enough_money_message_is_shown_when_insufficient_money_was_given() throws Exception {47 given().a_coffee_machine()48 .and().there_are_$_coffees_left_in_the_machine( 2 );49 when().I_insert_$_one_euro_coins( 1 )50 .and().I_press_the_coffee_button();51 then().the_message_$_is_shown( "Error: Insufficient money" );52 }53 @Test54 @FeatureDataTables55 @DataProvider( {56 "0, 0, Error: No coffees left",57 "0, 1, Error: No coffees left",58 "1, 0, Error: Insufficient money",59 "0, 5, Error: No coffees left",60 "1, 5, Enjoy your coffee!",61 } )62 public void correct_messages_are_shown( int coffees_left, int number_of_coins, String message ) throws Exception {63 given().a_coffee_machine()64 .and().there_are_$_coffees_left_in_the_machine( coffees_left );65 when().I_insert_$_one_euro_coins( number_of_coins )66 .and().I_press_the_coffee_button();67 then().the_message_$_is_shown( message );68 }69 @Test70 @FeatureDataTables71 @Issue( "#15" )72 @DataProvider( { "1", "3", "10" } )73 public void serving_a_coffee_reduces_the_number_of_available_coffees_by_one( int initial_coffees ) {74 given().a_coffee_machine()75 .and().there_are_$_coffees_left_in_the_machine( initial_coffees );76 when().I_insert_$_one_euro_coins( 2 )77 .and().I_press_the_coffee_button();78 then().a_coffee_should_be_served()79 .and().there_are_$_coffees_left_in_the_machine( initial_coffees - 1 );80 }81 @Test82 public void a_turned_off_coffee_machine_cannot_serve_coffee() throws Exception {83 given().a_coffee_machine()84 .and().the_machine_is_turned_off();85 when().I_press_the_coffee_button();86 then().no_coffee_should_be_served();87 }88 @TagsWithCustomStyle89 @Test90 @DataProvider( {91 "true, 1, 1, false",92 "true, 1, 2, true",93 "true, 0, 2, false",94 "false, 1, 2, false",95 } )96 public void buy_a_coffee( boolean onOrOff, int coffees, int dollars, boolean shouldOrShouldNot ) {97 given().a_coffee_machine().and().there_are_$_coffees_left_in_the_machine( coffees ).and().the_machine_is_$onOrOff( onOrOff ).and()98 .the_coffee_costs_$_euros( 2 );99 when().I_insert_$_one_euro_coins( dollars ).and().I_press_the_coffee_button();100 then().I_$shouldOrShouldNot_be_served_a_coffee( shouldOrShouldNot );101 }102 @Test103 @FeatureCaseDiffs104 @DataProvider( { "true", "false" } )105 public void turned_off_machines_should_not_serve_coffee( boolean onOrOff ) {106 given().a_coffee_machine()107 .and().there_are_$_coffees_left_in_the_machine( 2 )108 .and().the_machine_is_$onOrOff( onOrOff );109 when().I_insert_$_one_euro_coins( 2 ).and().I_press_the_coffee_button();110 if( onOrOff ) {111 then().I_should_be_served_a_coffee();112 } else {113 then().I_should_not_be_served_a_coffee().and().no_error_is_shown();114 }115 }116 @Test117 @FailingOnPurpose118 public void a_failing_scenario_for_demonstration_purposes() {119 given().a_coffee_machine()120 .and().there_are_no_more_coffees_left();121 when().I_press_the_coffee_button();122 then().I_should_be_served_a_coffee()123 .and().steps_following_a_failed_step_should_be_skipped();124 }125 @Test126 @FailingOnPurpose127 @DataProvider( {128 "true",129 "false"130 } )131 public void a_scenario_with_a_failing_test_case_for_demonstration_purposes( boolean withCoffees ) {132 given().a_coffee_machine();133 if( withCoffees ) {134 given().and().there_are_$_coffees_left_in_the_machine( 2 );135 }136 when().I_insert_$_one_euro_coins( 2 ).and().I_press_the_coffee_button();137 then().I_should_be_served_a_coffee();138 }139 @Test140 public void intro_words_are_not_required() {141 given().a_coffee_machine()142 .the_coffee_costs_$_euros( 5 )143 .there_are_$_coffees_left_in_the_machine( 3 );144 when().I_press_the_coffee_button();145 then().an_error_should_be_shown()146 .no_coffee_should_be_served();147 }148 // tag::dataprovider[]149 @Test150 @DataProvider( {151 "1, 1",152 "0, 2",153 "1, 0"154 } )155 public void coffee_is_not_served( int coffees, int euros ) {156 given().a_coffee_machine()157 .and().the_coffee_costs_$_euros( 2 )158 .and().there_are_$_coffees_left_in_the_machine( coffees );159 when().I_insert_$_one_euro_coins( euros )160 .and().I_press_the_coffee_button();161 then().I_should_not_be_served_a_coffee();162 }163 // end::dataprovider[]164 @FailingOnPurpose165 @Test( timeout = 1000 )166 public void shouldFailWithUnexpectedRuntimeException() throws Exception {167 then().$( "should throw a runtime exception", //$NON-NLS-1$168 new StepFunction<ThenCoffee>() {169 @Override170 public void apply( final ThenCoffee stage )171 throws Exception {172 Thread.sleep( 2000 );173 }174 } );175 }176 // tag::casedescription[]177 @Test178 @DataProvider( {179 "On the first run, 1, quite ok",180 "And on the second run, 2, well-done"181 } )182 @CaseAs( "$1" )...
Source:StageBase.java
1package com.tngtech.jgiven.base;2import com.tngtech.jgiven.StepFunction;3import com.tngtech.jgiven.annotation.Hidden;4/**5 * Useful base class for step definitions as it provides a {@link #self()} method6 * to create fluent interfaces.7 * <p>8 * Direct subclasses should provide introduction words (see {@link com.tngtech.jgiven.annotation.IntroWord}).9 * <p>10 * Typically one derives from one of the language-specific step definition classes, which11 * already provide a handful of useful introduction words.12 *13 * @param <SELF> the type of the subclass14 * @see com.tngtech.jgiven.Stage15 * @see com.tngtech.jgiven.lang.de.Stufe16 */17public class StageBase<SELF extends StageBase<?>> {18 @Hidden19 @SuppressWarnings( "unchecked" )20 public SELF self() {21 return (SELF) this;22 }23 /**24 * A step method for creating ad-hoc steps using lambdas.25 *26 * <h2>Example Usage</h2>27 * <pre>{@code 28 * given().$( "Two negative arguments", stage -> {29 * stage.given().argument( -5 )30 * .and().argument( -6 );31 * });32 * }</pre>33 *34 * @param description the description of the step35 * @param function the implementation of the step in form of a function where the parameter is the stage the step is executed in36 * @since 0.7.137 */38 public SELF $( String description, @Hidden StepFunction<? super SELF> function ) throws Exception {39 function.apply( self() );40 return self();41 }42 /**43 * A simple helper to provide a description44 *45 * <h2>Example Usage</h2>46 * <pre>{@code47 * given().$( "a description to improve the report, but is not related to any code that needs to be executed");48 * });49 * }</pre>50 *51 * @param description the description of the step52 * @since 0.15.4...
Source:StepFunction.java
1package com.tngtech.jgiven;2/**3 * A functional interface for defining ad-hoc steps.4 *5 * @see Stage#$(String, StepFunction)6 * @param <STAGE> the stage in which this step is executed7 * @since 0.7.1 8 */9public interface StepFunction<STAGE> {10 public void apply( STAGE stage ) throws Exception;11}...
StepFunction
Using AI Code Generation
1import com.tngtech.jgiven.Stage;2import com.tngtech.jgiven.annotation.ExpectedScenarioState;3import com.tngtech.jgiven.annotation.ScenarioState;4import com.tngtech.jgiven.annotation.ScenarioStage;5import com.tngtech.jgiven.annotation.Table;6import com.tngtech.jgiven.annotation.TableHeader;7import com.tngtech.jgiven.annotation.TableRow;8import com.tngtech.jgiven.junit.ScenarioTest;9import com.tngtech.jgiven.tags.FeatureBasic;10import com.tngtech.jgiven.tags.FeatureDataTables;11import com.tngtech.jgiven.tags.Issue;12import com.tngtech.jgiven.tags.IssueLink;13import com.tngtech.jgiven.tags.IssueLinks;14import com.tngtech.jgiven.tags.IssueType;15import com.tngtech.jgiven.tags.IssueTypes;16import com.tngtech.jgiven.tags.IssueUrl;17import com.tngtech.jgiven.tags.IssueUrls;18import com.tngtech.jgiven.tags.IssueValue;19import com.tngtech.jgiven.tags.IssueValues;20import com.tngtech.jgiven.tags.IssueVersions;21import com.tngtech.jgiven.tags.IssueVersion;22import com.tngtech.jgiven.tags.IssueVersionType;23import com.tngtech.jgiven.tags.IssueVersionTypes;24import com.tngtech.jgiven.ta
StepFunction
Using AI Code Generation
1import com.tngtech.jgiven.annotation.*;2import com.tngtech.jgiven.junit.*;3import com.tngtech.jgiven.junit.ScenarioTest;4import com.tngtech.jgiven.report.model.*;5import com.tngtech.jgiven.report.model.Word;6import org.junit.*;7import org.junit.runner.*;8import org.junit.runners.*;9import java.util.*;10import com.tngtech.jgiven.base.*;11import com.tngtech.jgiven.annotation.*;12import com.tngtech.jgiven.annotati
StepFunction
Using AI Code Generation
1public class StepFunction{2 public void test1(){3 StepFunction stepFunction = new StepFunction();4 stepFunction.given().a_step_function().when().the_function_is_evaluated().then().the_result_is();5 }6 public StepFunction given(){7 return this;8 }9 public StepFunction a_step_function(){10 return this;11 }12 public StepFunction when(){13 return this;14 }15 public StepFunction the_function_is_evaluated(){16 return this;17 }18 public StepFunction then(){19 return this;20 }21 public StepFunction the_result_is(){22 return this;23 }24}
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