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How to use getComparator method of org.junit.runners.Enum MethodSorters class

Best junit code snippet using org.junit.runners.Enum MethodSorters.getComparator

Source:MethodSorters.java

...3  public static final org.junit.runners.MethodSorters JVM;4  public static final org.junit.runners.MethodSorters DEFAULT;5  public static org.junit.runners.MethodSorters[] values();6  public static org.junit.runners.MethodSorters valueOf(java.lang.String);7  public java.util.Comparator<java.lang.reflect.Method> getComparator();8  static {};9}...

getComparator

Using AI Code Generation

1import org.junit.Test;2import org.junit.runner.RunWith;3import org.junit.runners.Parameterized;4import org.junit.runners.Parameterized.Parameters;5import org.junit.runners.Parameterized.UseParametersRunnerFactory;6import java.util.Arrays;7import java.util.Collection;8import static org.junit.Assert.assertEquals;9@RunWith(Parameterized.class)10@UseParametersRunnerFactory(EnumParameterizedRunnerFactory.class)11public class EnumParameterizedTest {12    private final String input;13    private final String expected;14    public EnumParameterizedTest(String input, String expected) {15        this.input = input;16        this.expected = expected;17    }18    public static Collection<Object[]> data() {19        return Arrays.asList(new Object[][]{20                {"a", "a"},21                {"b", "b"},22                {"c", "c"}23        });24    }25    public void test() {26        assertEquals(expected, input);27    }28}29package com.javacodegeeks.junit.runners;30import org.junit.runners.Parameterized;31import org.junit.runners.model.InitializationError;32import org.junit.runners.model.RunnerBuilder;33public class EnumParameterizedRunnerFactory implements Parameterized.RunnerFactory {34    public org.junit.runner.Runner createRunnerForTestWithParameters(35            throws InitializationError {36        return new EnumParameterizedRunner(testClass, builder, parameters);37    }38}39package com.javacodegeeks.junit.runners;40import org.junit.runner.Description;41import org.junit.runner.notification.RunNotifier;42import org.junit.runners.Parameterized;43import org.junit.runners.model.FrameworkMethod;44import org.junit.runners.model.InitializationError;45import org.junit.runners.model.Statement;46import java.util.Arrays;47public class EnumParameterizedRunner extends Parameterized {48    private final Object[] fParameters;49    private final String fName;50    public EnumParameterizedRunner(Class<?> klass, RunnerBuilder builder, Object[] parameters) throws InitializationError {51        super(klass, builder);52        fParameters = parameters;53        fName = Arrays.toString(parameters);54    }55    protected Statement methodInvoker(FrameworkMethod method, Object test) {56        return new InvokeMethod(method, test, fParameters);57    }58    protected String getName() {59        return fName;60    }61    protected String testName(FrameworkMethod method) {62        return method.getName() + getName();63    }

getComparator

Using AI Code Generation

1import org.junit.Test;2import org.junit.runner.RunWith;3import org.junit.runners.Parameterized;4import org.junit.runners.Parameterized.Parameters;5import java.util.Arrays;6import java.util.Collection;7import java.util.Comparator;8import static org.junit.Assert.assertEquals;9@RunWith(Parameterized.class)10public class TestParameterized {11    private String input;12    private int expected;13    public TestParameterized(String input, int expected) {14        this.input = input;15        this.expected = expected;16    }17    public static Collection<Object[]> data() {18        return Arrays.asList(new Object[][]{19                {"Hello", 5},20                {"Hello World", 11},21                {"Hello World!", 12}22        });23    }24    public void testLength() {25        assertEquals(expected, input.length());26    }27}

getComparator

Using AI Code Generation

1package com.baeldung.comparator;2import java.util.Arrays;3import java.util.Comparator;4import java.util.List;5import org.junit.Assert;6import org.junit.Test;7import org.junit.runners.MethodSorters;8public class EnumComparatorUnitTest {9    public void givenEnum_whenUsingDefaultComparator_thenCorrect() {10        List<Enum> enumList = Arrays.asList(Enum.B, Enum.A, Enum.C);11        enumList.sort(Comparator.naturalOrder());12        Assert.assertEquals(Arrays.asList(Enum.A, Enum.B, Enum.C), enumList);13    }14    public void givenEnum_whenUsingGetComparator_thenCorrect() {15        List<Enum> enumList = Arrays.asList(Enum.B, Enum.A, Enum.C);16        enumList.sort(MethodSorters.getComparator());17        Assert.assertEquals(Arrays.asList(Enum.A, Enum.B, Enum.C), enumList);18    }19}

getComparator

Using AI Code Generation

1import org.junit.runners.MethodSorters;2public class EnumTest {3   @org.junit.FixMethodOrder(MethodSorters.NAME_ASCENDING)4   public void test() {5      for (Day day : Day.values()) {6         System.out.println(day);7      }8   }9   enum Day {10      MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY;11   }12}

getComparator

Using AI Code Generation

1public class EnumSorterAscendingOrder {2	public void test1() {3		EnumSet<Day> days = EnumSet.allOf(Day.class);4		Comparator<Day> comparator = MethodSorters.getComparator(days);5		days.stream().sorted(comparator).forEach(System.out::println);6	}7}8public class EnumSorterDescendingOrder {9	public void test1() {10		EnumSet<Day> days = EnumSet.allOf(Day.class);11		Comparator<Day> comparator = MethodSorters.getComparator(days);12		days.stream().sorted(comparator.reversed()).forEach(System.out::println);13	}14}15public class EnumSorterUsingComparator {16	public void test1() {17		EnumSet<Day> days = EnumSet.allOf(Day.class);18		days.stream().sorted(Comparator.comparing(Enum::name)).forEach(System.out::println);19	}20}21public class EnumSorterUsingComparator {22	public void test1() {23		EnumSet<Day> days = EnumSet.allOf(Day.class);24		days.stream().sorted(Comparator.comparing(Enum::name).reversed()).forEach(System.out::println);25	}26}27public class EnumSorterUsingStream {28	public void test1() {29		EnumSet<Day> days = EnumSet.allOf(Day.class);

getComparator

Using AI Code Generation

1public void test() {2    Class<?> clazz = EnumMethodSorterTest.class;3    MethodSorters methodSorters = MethodSorters.getComparator();4    Method[] methods = clazz.getDeclaredMethods();5    Method[] sortedMethods = methodSorters.sort(methods);6    for (Method method : sortedMethods) {7        System.out.println(method.getName());8    }9}10package org.jnit.runners;11import org.junit.Test;12import org.junit.runner.RunWith;13import org.junit.runners.MethodSorters;14import org.junit.runners.Parameterized;15import org.junit.runners.Parameterized.Parameters;16@RunWith(Parameterized.class)17@Parameterized.UseParametersRunnerFactory(EnumMethodSorterParameterizedRunnerFactory.class)18@Parameterized.SortWith(EnumMethodSorter.class)19public class EnumMethodSorterTest {20    public enum EnumMethodSorter implements MethodSorters {21        TEST1, TEST2, TEST3, TEST4;22    }23    public void test() {24    }25    public void test1() {26    }27    public void test2() {28    }29    public void test3() {30    }31    public void test4() {32    }33    public void test5() {34    }35    public void test6() {36    }37    public void test7() {38    }39    public void test8() {40    }41    public void test9() {42    }43    public void test10() {44    }45    public void test11() {46    }47    public void test12() {48    }49    public void test13() {50    }51    public void test14() {52    }53    public void test15() {54    }55    public void test16() {56    }57    public void test17() {58    }59    public void test18() {60    }

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Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
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Assertions in JUnit - Assertions are used to validate or test that the result of an action/functionality is the same as expected. Learn in detail what assertions are and how to use them while performing JUnit testing.
Parameterization in JUnit - Parameterized Test enables you to run the same automated test scripts with different variables. By collecting data on each method's test parameters, you can minimize time spent on writing tests. Learn how to use parameterization in JUnit.
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Advanced Use Cases for JUnit testing - Take a deep dive into the advanced use cases, such as how to run JUnit tests in Jupiter, how to use JUnit 5 Mockito for Unit testing, and more for JUnit testing.