From 332061d8bd75edbe81f734eb9c79b91d24375bdc Mon Sep 17 00:00:00 2001 From: Alejandro Gervasio Date: Thu, 13 Sep 2018 02:11:30 -0300 Subject: [PATCH] BAEL-971 - An Introduction to Apache Commons Lang (#5165) * Initial Commit * Update SystemsUtilsUnitTest.java * Update SystemsUtilsUnitTest.java * Update ConstructorUtilsUnitTest.java * Update FieldUtilsUnitTest.java * Update ConstructorUtilsUnitTest.java * Update MethodUtilsUnitTest.java * Update BasicThreadFactoryUnitTest.java * Update ConstructorUtilsUnitTest.java --- .../lang3/application/Application.java | 8 ++ .../baeldung/commons/lang3/beans/User.java | 25 ++++++ .../commons/lang3/beans/UserInitializer.java | 11 +++ .../lang3/test/ArrayUtilsUnitTest.java | 84 +++++++++++++++++++ .../test/BasicThreadFactoryUnitTest.java | 18 ++++ .../lang3/test/ConstructorUtilsUnitTest.java | 28 +++++++ .../lang3/test/FieldUtilsUnitTest.java | 60 +++++++++++++ .../commons/lang3/test/FractionUnitTest.java | 34 ++++++++ .../lang3/test/HashCodeBuilderUnitTest.java | 17 ++++ .../lang3/test/ImmutablePairUnitTest.java | 36 ++++++++ .../lang3/test/ImmutableTripleUnitTest.java | 31 +++++++ .../lang3/test/LazyInitializerUnitTest.java | 16 ++++ .../lang3/test/MethodUtilsUnitTest.java | 15 ++++ .../lang3/test/MutableObjectUnitTest.java | 32 +++++++ .../lang3/test/MutablePairUnitTest.java | 32 +++++++ .../lang3/test/NumberUtilsUnitTest.java | 46 ++++++++++ .../lang3/test/StringUtilsUnitTest.java | 73 ++++++++++++++++ .../lang3/test/SystemsUtilsUnitTest.java | 25 ++++++ .../commons/lang3/test/TripleUnitTest.java | 31 +++++++ 19 files changed, 622 insertions(+) create mode 100644 libraries/src/main/java/com/baeldung/commons/lang3/application/Application.java create mode 100644 libraries/src/main/java/com/baeldung/commons/lang3/beans/User.java create mode 100644 libraries/src/main/java/com/baeldung/commons/lang3/beans/UserInitializer.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/ArrayUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/BasicThreadFactoryUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/ConstructorUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/FieldUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/FractionUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/HashCodeBuilderUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutablePairUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutableTripleUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/LazyInitializerUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/MethodUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/MutableObjectUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/MutablePairUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/NumberUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/StringUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/SystemsUtilsUnitTest.java create mode 100644 libraries/src/test/java/com/baeldung/commons/lang3/test/TripleUnitTest.java diff --git a/libraries/src/main/java/com/baeldung/commons/lang3/application/Application.java b/libraries/src/main/java/com/baeldung/commons/lang3/application/Application.java new file mode 100644 index 0000000000..7d4316e3ec --- /dev/null +++ b/libraries/src/main/java/com/baeldung/commons/lang3/application/Application.java @@ -0,0 +1,8 @@ +package com.baeldung.commons.lang3.application; + +public class Application { + + public static void main(String[] args) { + + } +} diff --git a/libraries/src/main/java/com/baeldung/commons/lang3/beans/User.java b/libraries/src/main/java/com/baeldung/commons/lang3/beans/User.java new file mode 100644 index 0000000000..68aab46c33 --- /dev/null +++ b/libraries/src/main/java/com/baeldung/commons/lang3/beans/User.java @@ -0,0 +1,25 @@ +package com.baeldung.commons.lang3.beans; + +public class User { + + private final String name; + private final String email; + + public User(String name, String email) { + this.name = name; + this.email = email; + } + + public String getName() { + return name; + } + + public String getEmail() { + return email; + } + + @Override + public String toString() { + return "User{" + "name=" + name + ", email=" + email + '}'; + } +} diff --git a/libraries/src/main/java/com/baeldung/commons/lang3/beans/UserInitializer.java b/libraries/src/main/java/com/baeldung/commons/lang3/beans/UserInitializer.java new file mode 100644 index 0000000000..ae5d80244c --- /dev/null +++ b/libraries/src/main/java/com/baeldung/commons/lang3/beans/UserInitializer.java @@ -0,0 +1,11 @@ +package com.baeldung.commons.lang3.beans; + +import org.apache.commons.lang3.concurrent.LazyInitializer; + +public class UserInitializer extends LazyInitializer { + + @Override + protected User initialize() { + return new User("John", "john@domain.com"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/ArrayUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/ArrayUtilsUnitTest.java new file mode 100644 index 0000000000..5eba736b4a --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/ArrayUtilsUnitTest.java @@ -0,0 +1,84 @@ +package com.baeldung.commons.lang3.test; + +import java.util.HashMap; +import java.util.Map; +import org.apache.commons.lang3.ArrayUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class ArrayUtilsUnitTest { + + @Test + public void givenArrayUtilsClass_whenCalledtoString_thenCorrect() { + String[] array = {"a", "b", "c"}; + assertThat(ArrayUtils.toString(array)).isEqualTo("{a,b,c}"); + } + + @Test + public void givenArrayUtilsClass_whenCalledtoStringIfArrayisNull_thenCorrect() { + String[] array = null; + assertThat(ArrayUtils.toString(array, "Array is null")).isEqualTo("Array is null"); + } + + @Test + public void givenArrayUtilsClass_whenCalledhashCode_thenCorrect() { + String[] array = {"a", "b", "c"}; + assertThat(ArrayUtils.hashCode(array)).isEqualTo(997619); + } + + @Test + public void givenArrayUtilsClass_whenCalledtoMap_thenCorrect() { + String[][] array = {{"1", "one", }, {"2", "two", }, {"3", "three"}}; + Map map = new HashMap(); + map.put("1", "one"); + map.put("2", "two"); + map.put("3", "three"); + assertThat(ArrayUtils.toMap(array)).isEqualTo(map); + } + + @Test + public void givenArrayUtilsClass_whenCallednullToEmptyStringArray_thenCorrect() { + String[] array = null; + assertThat(ArrayUtils.nullToEmpty(array)).isEmpty(); + } + + @Test + public void givenArrayUtilsClass_whenCallednullToEmptyObjectArray_thenCorrect() { + Object[] array = null; + assertThat(ArrayUtils.nullToEmpty(array)).isEmpty(); + } + + @Test + public void givenArrayUtilsClass_whenCalledsubarray_thenCorrect() { + int[] array = {1, 2, 3}; + int[] expected = {1}; + assertThat(ArrayUtils.subarray(array, 0, 1)).isEqualTo(expected); + } + + @Test + public void givenArrayUtilsClass_whenCalledisSameLength_thenCorrect() { + int[] array1 = {1, 2, 3}; + int[] array2 = {1, 2, 3}; + assertThat(ArrayUtils.isSameLength(array1, array2)).isTrue(); + } + + @Test + public void givenArrayUtilsClass_whenCalledreverse_thenCorrect() { + int[] array1 = {1, 2, 3}; + int[] array2 = {3, 2, 1}; + ArrayUtils.reverse(array1); + assertThat(array1).isEqualTo(array2); + } + + @Test + public void givenArrayUtilsClass_whenCalledIndexOf_thenCorrect() { + int[] array = {1, 2, 3}; + assertThat(ArrayUtils.indexOf(array, 1, 0)).isEqualTo(0); + } + + @Test + public void givenArrayUtilsClass_whenCalledcontains_thenCorrect() { + int[] array = {1, 2, 3}; + assertThat(ArrayUtils.contains(array, 1)).isTrue(); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/BasicThreadFactoryUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/BasicThreadFactoryUnitTest.java new file mode 100644 index 0000000000..f32980269a --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/BasicThreadFactoryUnitTest.java @@ -0,0 +1,18 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.concurrent.BasicThreadFactory; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class BasicThreadFactoryUnitTest { + + @Test + public void givenBasicThreadFactoryInstance_whenCalledBuilder_thenCorrect() { + BasicThreadFactory factory = new BasicThreadFactory.Builder() + .namingPattern("workerthread-%d") + .daemon(true) + .priority(Thread.MAX_PRIORITY) + .build(); + assertThat(factory).isInstanceOf(BasicThreadFactory.class); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/ConstructorUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/ConstructorUtilsUnitTest.java new file mode 100644 index 0000000000..f55f239d75 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/ConstructorUtilsUnitTest.java @@ -0,0 +1,28 @@ +package com.baeldung.commons.lang3.test; + +import com.baeldung.commons.lang3.beans.User; +import java.lang.reflect.Constructor; +import java.lang.reflect.InvocationTargetException; +import org.apache.commons.lang3.reflect.ConstructorUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class ConstructorUtilsUnitTest { + + @Test + public void givenConstructorUtilsClass_whenCalledgetAccessibleConstructor_thenCorrect() { + assertThat(ConstructorUtils.getAccessibleConstructor(User.class, String.class, String.class)).isInstanceOf(Constructor.class); + } + + @Test + public void givenConstructorUtilsClass_whenCalledinvokeConstructor_thenCorrect() throws Exception { + assertThat(ConstructorUtils.invokeConstructor(User.class, "name", "email")).isInstanceOf(User.class); + } + + @Test + public void givenConstructorUtilsClass_whenCalledinvokeExactConstructor_thenCorrect() throws Exception { + String[] args = {"name", "email"}; + Class[] parameterTypes= {String.class, String.class}; + assertThat(ConstructorUtils.invokeExactConstructor(User.class, args, parameterTypes)).isInstanceOf(User.class); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/FieldUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/FieldUtilsUnitTest.java new file mode 100644 index 0000000000..8abb373e30 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/FieldUtilsUnitTest.java @@ -0,0 +1,60 @@ +package com.baeldung.commons.lang3.test; + +import com.baeldung.commons.lang3.beans.User; +import org.apache.commons.lang3.reflect.FieldUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.BeforeClass; +import org.junit.Test; + +public class FieldUtilsUnitTest { + + private static User user; + + @BeforeClass + public static void setUpUserInstance() { + user = new User("Julie", "julie@domain.com"); + } + + @Test + public void givenFieldUtilsClass_whenCalledgetField_thenCorrect() { + assertThat(FieldUtils.getField(User.class, "name", true).getName()).isEqualTo("name"); + } + + @Test + public void givenFieldUtilsClass_whenCalledgetFieldForceAccess_thenCorrect() { + assertThat(FieldUtils.getField(User.class, "name", true).getName()).isEqualTo("name"); + } + + @Test + public void givenFieldUtilsClass_whenCalledgetDeclaredFieldForceAccess_thenCorrect() { + assertThat(FieldUtils.getDeclaredField(User.class, "name", true).getName()).isEqualTo("name"); + } + + @Test + public void givenFieldUtilsClass_whenCalledgetAllField_thenCorrect() { + assertThat(FieldUtils.getAllFields(User.class).length).isEqualTo(2); + } + + @Test + public void givenFieldUtilsClass_whenCalledreadField_thenCorrect() throws IllegalAccessException { + assertThat(FieldUtils.readField(user, "name", true)).isEqualTo("Julie"); + } + + @Test + public void givenFieldUtilsClass_whenCalledreadDeclaredField_thenCorrect() throws IllegalAccessException { + assertThat(FieldUtils.readDeclaredField(user, "name", true)).isEqualTo("Julie"); + } + + @Test + public void givenFieldUtilsClass_whenCalledwriteField_thenCorrect() throws IllegalAccessException { + FieldUtils.writeField(user, "name", "Julie", true); + assertThat(FieldUtils.readField(user, "name", true)).isEqualTo("Julie"); + + } + + @Test + public void givenFieldUtilsClass_whenCalledwriteDeclaredField_thenCorrect() throws IllegalAccessException { + FieldUtils.writeDeclaredField(user, "name", "Julie", true); + assertThat(FieldUtils.readField(user, "name", true)).isEqualTo("Julie"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/FractionUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/FractionUnitTest.java new file mode 100644 index 0000000000..1a5094a16d --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/FractionUnitTest.java @@ -0,0 +1,34 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.math.Fraction; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class FractionUnitTest { + + @Test + public void givenFractionClass_whenCalledgetFraction_thenCorrect() { + assertThat(Fraction.getFraction(5, 6)).isInstanceOf(Fraction.class); + } + + @Test + public void givenTwoFractionInstances_whenCalledadd_thenCorrect() { + Fraction fraction1 = Fraction.getFraction(1, 4); + Fraction fraction2 = Fraction.getFraction(3, 4); + assertThat(fraction1.add(fraction2).toString()).isEqualTo("1/1"); + } + + @Test + public void givenTwoFractionInstances_whenCalledsubstract_thenCorrect() { + Fraction fraction1 = Fraction.getFraction(3, 4); + Fraction fraction2 = Fraction.getFraction(1, 4); + assertThat(fraction1.subtract(fraction2).toString()).isEqualTo("1/2"); + } + + @Test + public void givenTwoFractionInstances_whenCalledmultiply_thenCorrect() { + Fraction fraction1 = Fraction.getFraction(3, 4); + Fraction fraction2 = Fraction.getFraction(1, 4); + assertThat(fraction1.multiplyBy(fraction2).toString()).isEqualTo("3/16"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/HashCodeBuilderUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/HashCodeBuilderUnitTest.java new file mode 100644 index 0000000000..bbd24c8207 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/HashCodeBuilderUnitTest.java @@ -0,0 +1,17 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.builder.HashCodeBuilder; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class HashCodeBuilderUnitTest { + + @Test + public void givenHashCodeBuilderInstance_whenCalledtoHashCode_thenCorrect() { + int hashcode = new HashCodeBuilder(17, 37) + .append("John") + .append("john@domain.com") + .toHashCode(); + assertThat(hashcode).isEqualTo(1269178828); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutablePairUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutablePairUnitTest.java new file mode 100644 index 0000000000..28ed8d2514 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutablePairUnitTest.java @@ -0,0 +1,36 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.tuple.ImmutablePair; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.BeforeClass; +import org.junit.Test; + +public class ImmutablePairUnitTest { + + private static ImmutablePair immutablePair; + + @BeforeClass + public static void setUpImmutablePairInstance() { + immutablePair = new ImmutablePair<>("leftElement", "rightElement"); + } + + @Test + public void givenImmutablePairInstance_whenCalledgetLeft_thenCorrect() { + assertThat(immutablePair.getLeft()).isEqualTo("leftElement"); + } + + @Test + public void givenImmutablePairInstance_whenCalledgetRight_thenCorrect() { + assertThat(immutablePair.getRight()).isEqualTo("rightElement"); + } + + @Test + public void givenImmutablePairInstance_whenCalledof_thenCorrect() { + assertThat(ImmutablePair.of("leftElement", "rightElement")).isInstanceOf(ImmutablePair.class); + } + + @Test(expected = UnsupportedOperationException.class) + public void givenImmutablePairInstance_whenCalledSetValue_thenThrowUnsupportedOperationException() { + immutablePair.setValue("newValue"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutableTripleUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutableTripleUnitTest.java new file mode 100644 index 0000000000..a9dd3fa7c0 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/ImmutableTripleUnitTest.java @@ -0,0 +1,31 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.tuple.ImmutableTriple; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.BeforeClass; +import org.junit.Test; + +public class ImmutableTripleUnitTest { + + private static ImmutableTriple immutableTriple; + + @BeforeClass + public static void setUpImmutableTripleInstance() { + immutableTriple = new ImmutableTriple<>("leftElement", "middleElement", "rightElement"); + } + + @Test + public void givenImmutableTripleInstance_whenCalledgetLeft_thenCorrect() { + assertThat(immutableTriple.getLeft()).isEqualTo("leftElement"); + } + + @Test + public void givenImmutableTripleInstance_whenCalledgetMiddle_thenCorrect() { + assertThat(immutableTriple.getMiddle()).isEqualTo("middleElement"); + } + + @Test + public void givenImmutableInstance_whenCalledgetRight_thenCorrect() { + assertThat(immutableTriple.getRight()).isEqualTo("rightElement"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/LazyInitializerUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/LazyInitializerUnitTest.java new file mode 100644 index 0000000000..a08399f8de --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/LazyInitializerUnitTest.java @@ -0,0 +1,16 @@ +package com.baeldung.commons.lang3.test; + +import com.baeldung.commons.lang3.beans.User; +import com.baeldung.commons.lang3.beans.UserInitializer; +import org.apache.commons.lang3.concurrent.ConcurrentException; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class LazyInitializerUnitTest { + + @Test + public void givenLazyInitializerInstance_whenCalledget_thenCorrect() throws ConcurrentException { + UserInitializer userInitializer = new UserInitializer(); + assertThat(userInitializer.get()).isInstanceOf(User.class); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/MethodUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/MethodUtilsUnitTest.java new file mode 100644 index 0000000000..5e1d15f2f8 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/MethodUtilsUnitTest.java @@ -0,0 +1,15 @@ +package com.baeldung.commons.lang3.test; + +import com.baeldung.commons.lang3.beans.User; +import java.lang.reflect.Method; +import org.apache.commons.lang3.reflect.MethodUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class MethodUtilsUnitTest { + + @Test + public void givenMethodUtilsClass_whenCalledgetAccessibleMethod_thenCorrect() { + assertThat(MethodUtils.getAccessibleMethod(User.class, "getName")).isInstanceOf(Method.class); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/MutableObjectUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/MutableObjectUnitTest.java new file mode 100644 index 0000000000..02041f51e8 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/MutableObjectUnitTest.java @@ -0,0 +1,32 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.mutable.MutableObject; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.BeforeClass; +import org.junit.Test; + +public class MutableObjectUnitTest { + + private static MutableObject mutableObject; + + @BeforeClass + public static void setUpMutableObject() { + mutableObject = new MutableObject("Initial value"); + } + + @Test + public void givenMutableObject_whenCalledgetValue_thenCorrect() { + assertThat(mutableObject.getValue()).isInstanceOf(String.class); + } + + @Test + public void givenMutableObject_whenCalledsetValue_thenCorrect() { + mutableObject.setValue("Another value"); + assertThat(mutableObject.getValue()).isEqualTo("Another value"); + } + + @Test + public void givenMutableObject_whenCalledtoString_thenCorrect() { + assertThat(mutableObject.toString()).isEqualTo("Another value"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/MutablePairUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/MutablePairUnitTest.java new file mode 100644 index 0000000000..174ec70c4d --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/MutablePairUnitTest.java @@ -0,0 +1,32 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.tuple.MutablePair; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.BeforeClass; +import org.junit.Test; + +public class MutablePairUnitTest { + + private static MutablePair mutablePair; + + @BeforeClass + public static void setUpMutablePairInstance() { + mutablePair = new MutablePair<>("leftElement", "rightElement"); + } + + @Test + public void givenMutablePairInstance_whenCalledgetLeft_thenCorrect() { + assertThat(mutablePair.getLeft()).isEqualTo("leftElement"); + } + + @Test + public void givenMutablePairInstance_whenCalledgetRight_thenCorrect() { + assertThat(mutablePair.getRight()).isEqualTo("rightElement"); + } + + @Test + public void givenMutablePairInstance_whenCalledsetLeft_thenCorrect() { + mutablePair.setLeft("newLeftElement"); + assertThat(mutablePair.getLeft()).isEqualTo("newLeftElement"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/NumberUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/NumberUtilsUnitTest.java new file mode 100644 index 0000000000..bdf254a102 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/NumberUtilsUnitTest.java @@ -0,0 +1,46 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.math.NumberUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class NumberUtilsUnitTest { + + @Test + public void givenNumberUtilsClass_whenCalledcompareWithIntegers_thenCorrect() { + assertThat(NumberUtils.compare(1, 1)).isEqualTo(0); + } + + @Test + public void givenNumberUtilsClass_whenCalledcompareWithLongs_thenCorrect() { + assertThat(NumberUtils.compare(1L, 1L)).isEqualTo(0); + } + + @Test + public void givenNumberUtilsClass_whenCalledcreateNumber_thenCorrect() { + assertThat(NumberUtils.createNumber("123456")).isEqualTo(123456); + } + + @Test + public void givenNumberUtilsClass_whenCalledisDigits_thenCorrect() { + assertThat(NumberUtils.isDigits("123456")).isTrue(); + } + + @Test + public void givenNumberUtilsClass_whenCallemaxwithIntegerArray_thenCorrect() { + int[] array = {1, 2, 3, 4, 5, 6}; + assertThat(NumberUtils.max(array)).isEqualTo(6); + } + + @Test + public void givenNumberUtilsClass_whenCalleminwithIntegerArray_thenCorrect() { + int[] array = {1, 2, 3, 4, 5, 6}; + assertThat(NumberUtils.min(array)).isEqualTo(1); + } + + @Test + public void givenNumberUtilsClass_whenCalleminwithByteArray_thenCorrect() { + byte[] array = {1, 2, 3, 4, 5, 6}; + assertThat(NumberUtils.min(array)).isEqualTo((byte) 1); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/StringUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/StringUtilsUnitTest.java new file mode 100644 index 0000000000..ab39ba7bd9 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/StringUtilsUnitTest.java @@ -0,0 +1,73 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.StringUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class StringUtilsUnitTest { + + @Test + public void givenStringUtilsClass_whenCalledisBlank_thenCorrect() { + assertThat(StringUtils.isBlank(" ")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledisEmpty_thenCorrect() { + assertThat(StringUtils.isEmpty("")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledisAllLowerCase_thenCorrect() { + assertThat(StringUtils.isAllLowerCase("abd")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledisAllUpperCase_thenCorrect() { + assertThat(StringUtils.isAllUpperCase("ABC")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledisMixedCase_thenCorrect() { + assertThat(StringUtils.isMixedCase("abC")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledisAlpha_thenCorrect() { + assertThat(StringUtils.isAlpha("abc")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledisAlphanumeric_thenCorrect() { + assertThat(StringUtils.isAlphanumeric("abc123")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledcontains_thenCorrect() { + assertThat(StringUtils.contains("abc", "ab")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledcontainsAny_thenCorrect() { + assertThat(StringUtils.containsAny("abc", 'a', 'b', 'c')).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledcontainsIgnoreCase_thenCorrect() { + assertThat(StringUtils.containsIgnoreCase("abc", "ABC")).isTrue(); + } + + @Test + public void givenStringUtilsClass_whenCalledswapCase_thenCorrect() { + assertThat(StringUtils.swapCase("abc")).isEqualTo("ABC"); + } + + @Test + public void givenStringUtilsClass_whenCalledreverse_thenCorrect() { + assertThat(StringUtils.reverse("abc")).isEqualTo("cba"); + } + + @Test + public void givenStringUtilsClass_whenCalleddifference_thenCorrect() { + assertThat(StringUtils.difference("abc", "abd")).isEqualTo("d"); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/SystemsUtilsUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/SystemsUtilsUnitTest.java new file mode 100644 index 0000000000..0efe97f912 --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/SystemsUtilsUnitTest.java @@ -0,0 +1,25 @@ +package com.baeldung.commons.lang3.test; + +import java.io.File; +import org.apache.commons.lang3.JavaVersion; +import org.apache.commons.lang3.SystemUtils; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.Test; + +public class SystemsUtilsUnitTest { + + @Test + public void givenSystemUtilsClass_whenCalledgetJavaHome_thenCorrect() { + assertThat(SystemUtils.getJavaHome()).isEqualTo(new File("/usr/lib/jvm/java-8-oracle/jre")); + } + + @Test + public void givenSystemUtilsClass_whenCalledgetUserHome_thenCorrect() { + assertThat(SystemUtils.getUserHome()).isEqualTo(new File("/home/travis")); + } + + @Test + public void givenSystemUtilsClass_whenCalledisJavaVersionAtLeast_thenCorrect() { + assertThat(SystemUtils.isJavaVersionAtLeast(JavaVersion.JAVA_RECENT)).isTrue(); + } +} diff --git a/libraries/src/test/java/com/baeldung/commons/lang3/test/TripleUnitTest.java b/libraries/src/test/java/com/baeldung/commons/lang3/test/TripleUnitTest.java new file mode 100644 index 0000000000..7d506bbbab --- /dev/null +++ b/libraries/src/test/java/com/baeldung/commons/lang3/test/TripleUnitTest.java @@ -0,0 +1,31 @@ +package com.baeldung.commons.lang3.test; + +import org.apache.commons.lang3.tuple.Triple; +import static org.assertj.core.api.Assertions.assertThat; +import org.junit.BeforeClass; +import org.junit.Test; + +public class TripleUnitTest { + + private static Triple triple; + + @BeforeClass + public static void setUpTripleInstance() { + triple = Triple.of("leftElement", "middleElement", "rightElement"); + } + + @Test + public void givenTripleInstance_whenCalledgetLeft_thenCorrect() { + assertThat(triple.getLeft()).isEqualTo("leftElement"); + } + + @Test + public void givenTripleInstance_whenCalledgetMiddle_thenCorrect() { + assertThat(triple.getMiddle()).isEqualTo("middleElement"); + } + + @Test + public void givenTripleInstance_whenCalledgetRight_thenCorrect() { + assertThat(triple.getRight()).isEqualTo("rightElement"); + } +}