How to use Interface Condition.Step class of org.hamcrest package

Best junit code snippet using org.hamcrest.Interface Condition.Step

Source:HasPropertyWithValue.java Github

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1/* Copyright (c) 2000-2006 hamcrest.org2 */3package org.hamcrest.beans;45import java.beans.PropertyDescriptor;6import java.lang.reflect.Method;78import org.hamcrest.Condition;9import org.hamcrest.Description;10import org.hamcrest.Factory;11import org.hamcrest.Matcher;12import org.hamcrest.TypeSafeDiagnosingMatcher;1314import static org.hamcrest.Condition.matched;15import static org.hamcrest.Condition.notMatched;16import static org.hamcrest.beans.PropertyUtil.NO_ARGUMENTS;1718/**19 * Matcher that asserts that a JavaBean property on an argument passed to the20 * mock object meets the provided matcher. This is useful for when objects21 * are created within code under test and passed to a mock object, and you wish22 * to assert that the created object has certain properties.23 * <p/>24 * <h2>Example Usage</h2>25 * Consider the situation where we have a class representing a person, which26 * follows the basic JavaBean convention of having get() and possibly set()27 * methods for it's properties:28 * <pre>29 * public class Person {30 * private String name;31 * public Person(String person) {32 * this.person = person;33 * }34 * public String getName() {35 * return name;36 * }37 * }</pre>38 * 39 * And that these person objects are generated within a piece of code under test40 * (a class named PersonGenerator). This object is sent to one of our mock objects41 * which overrides the PersonGenerationListener interface:42 * <pre>43 * public interface PersonGenerationListener {44 * public void personGenerated(Person person);45 * }</pre>46 * 47 * In order to check that the code under test generates a person with name48 * "Iain" we would do the following:49 * <pre>50 * Mock personGenListenerMock = mock(PersonGenerationListener.class);51 * personGenListenerMock.expects(once()).method("personGenerated").with(and(isA(Person.class), hasProperty("Name", eq("Iain")));52 * PersonGenerationListener listener = (PersonGenerationListener)personGenListenerMock.proxy();</pre>53 * 54 * If an exception is thrown by the getter method for a property, the property55 * does not exist, is not readable, or a reflection related exception is thrown56 * when trying to invoke it then this is treated as an evaluation failure and57 * the matches method will return false.58 * <p/>59 * This matcher class will also work with JavaBean objects that have explicit60 * bean descriptions via an associated BeanInfo description class. See the61 * JavaBeans specification for more information:62 * <p/>63 * http://java.sun.com/products/javabeans/docs/index.html64 *65 * @author Iain McGinniss66 * @author Nat Pryce67 * @author Steve Freeman68 */69public class HasPropertyWithValue<T> extends TypeSafeDiagnosingMatcher<T> {70 private static final Condition.Step<PropertyDescriptor,Method> WITH_READ_METHOD = withReadMethod();71 private final String propertyName;72 private final Matcher<Object> valueMatcher;7374 public HasPropertyWithValue(String propertyName, Matcher<?> valueMatcher) {75 this.propertyName = propertyName;76 this.valueMatcher = nastyGenericsWorkaround(valueMatcher);77 }7879 @Override80 public boolean matchesSafely(T bean, Description mismatch) {81 return propertyOn(bean, mismatch)82 .and(WITH_READ_METHOD)83 .and(withPropertyValue(bean))84 .matching(valueMatcher, "property '" + propertyName + "' ");85 }8687 @Override88 public void describeTo(Description description) {89 description.appendText("hasProperty(").appendValue(propertyName).appendText(", ")90 .appendDescriptionOf(valueMatcher).appendText(")");91 }9293 private Condition<PropertyDescriptor> propertyOn(T bean, Description mismatch) {94 PropertyDescriptor property = PropertyUtil.getPropertyDescriptor(propertyName, bean);95 if (property == null) {96 mismatch.appendText("No property \"" + propertyName + "\"");97 return notMatched();98 }99100 return matched(property, mismatch);101 }102103 private Condition.Step<Method, Object> withPropertyValue(final T bean) {104 return new Condition.Step<Method, Object>() {105 @Override106 public Condition<Object> apply(Method readMethod, Description mismatch) {107 try {108 return matched(readMethod.invoke(bean, NO_ARGUMENTS), mismatch);109 } catch (Exception e) {110 mismatch.appendText(e.getMessage());111 return notMatched();112 }113 }114 };115 }116117 @SuppressWarnings("unchecked")118 private static Matcher<Object> nastyGenericsWorkaround(Matcher<?> valueMatcher) {119 return (Matcher<Object>) valueMatcher;120 }121122 private static Condition.Step<PropertyDescriptor,Method> withReadMethod() {123 return new Condition.Step<PropertyDescriptor, java.lang.reflect.Method>() {124 @Override125 public Condition<Method> apply(PropertyDescriptor property, Description mismatch) {126 final Method readMethod = property.getReadMethod();127 if (null == readMethod) {128 mismatch.appendText("property \"" + property.getName() + "\" is not readable");129 return notMatched();130 }131 return matched(readMethod, mismatch);132 }133 };134 }135136 /**137 * Creates a matcher that matches when the examined object has a JavaBean property138 * with the specified name whose value satisfies the specified matcher.139 * <p/>140 * For example:141 * <pre>assertThat(myBean, hasProperty("foo", equalTo("bar"))</pre>142 * 143 * @param propertyName144 * the name of the JavaBean property that examined beans should possess145 * @param valueMatcher146 * a matcher for the value of the specified property of the examined bean147 */148 @Factory149 public static <T> Matcher<T> hasProperty(String propertyName, Matcher<?> valueMatcher) {150 return new HasPropertyWithValue<T>(propertyName, valueMatcher);151 }152} ...

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Source:Condition.java Github

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1/* */ package org.hamcrest;2/* */ 3/* */ 4/* */ 5/* */ 6/* */ 7/* */ 8/* */ 9/* */ 10/* */ 11/* */ 12/* */ public abstract class Condition<T>13/* */ {14/* 14 */ public static final NotMatched<Object> NOT_MATCHED = new NotMatched();15/* */ 16/* */ 17/* */ 18/* */ 19/* */ private Condition() {}20/* */ 21/* */ 22/* */ 23/* */ public final boolean matching(Matcher<T> match)24/* */ {25/* 25 */ return matching(match, ""); } public final <U> Condition<U> then(Step<? super T, U> mapping) {26/* 26 */ return and(mapping);27/* */ }28/* */ 29/* */ public static <T> Condition<T> notMatched() {30/* 30 */ return NOT_MATCHED;31/* */ }32/* */ 33/* */ public static <T> Condition<T> matched(T theValue, Description mismatch) {34/* 34 */ return new Matched<T>(theValue, mismatch);35/* */ }36/* */ public abstract boolean matching(Matcher<T> paramMatcher, String paramString);37/* */ public abstract <U> Condition<U> and(Step<? super T, U> paramStep);38/* */ public static interface Step<I, O> {39/* */ Condition<O> apply(I param1I, Description param1Description); }40/* */ private static final class Matched<T> extends Condition<T> { private final T theValue;41/* */ private Matched(T theValue, Description mismatch) {42/* 42 */ this.theValue = theValue;43/* 43 */ this.mismatch = mismatch;44/* */ }45/* */ private final Description mismatch;46/* */ 47/* */ public boolean matching(Matcher<T> matcher, String message) {48/* 48 */ if (matcher.matches(this.theValue)) {49/* 49 */ return true;50/* */ }51/* 51 */ this.mismatch.appendText(message);52/* 52 */ matcher.describeMismatch(this.theValue, this.mismatch);53/* 53 */ return false;54/* */ }55/* */ 56/* */ 57/* */ public <U> Condition<U> and(Condition.Step<? super T, U> next) {58/* 58 */ return next.apply(this.theValue, this.mismatch);59/* */ } }60/* */ private static final class NotMatched<T> extends Condition<T> { private NotMatched() {}61/* */ 62/* */ public boolean matching(Matcher<T> match, String message) {63/* 63 */ return false;64/* */ }65/* */ public <U> Condition<U> and(Condition.Step<? super T, U> mapping) {66/* 66 */ return notMatched();67/* */ } }68/* */ 69/* */ }70/* Location: C:\Users\CAR\Desktop\sab\SAB_projekat_1920\SAB_projekat_1920\SAB_projekat_1920.jar!\org\hamcrest\Condition.class71 * Java compiler version: 5 (49.0)72 * JD-Core Version: 1.1.373 */...

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Interface Condition.Step

Using AI Code Generation

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1import org.hamcrest.Condition.Step;2import org.hamcrest.Matcher;3import org.hamcrest.MatcherAssert;4import org.hamcrest.core.Is;5import org.hamcrest.core.IsEqual;6import org.hamcrest.core.IsNot;7import org.hamcrest.core.IsSame;8import org.hamcrest.core.IsNull;9import org.hamcrest.core.IsInstanceOf;10import org.hamcrest.Condition.Step;11import org.hamcrest.Matcher;12import org.hamcrest.MatcherAssert;13import org.hamcrest.core.Is;14import org.hamcrest.core.IsEqual;15import org.hamcrest.core.IsNot;16import org.hamcrest.core.IsSame;17import org.hamcrest.core.IsNull;18import org.hamcrest.core.IsInstanceOf;19import org.hamcrest.Condition.Step;20import org.hamcrest.Matcher;21import org.hamcrest.MatcherAssert;22import org.hamcrest.core.Is;23import org.hamcrest.core.IsEqual;24import org.hamcrest.core.IsNot;25import org.hamcrest.core.IsSame;26import org.hamcrest.core.IsNull;27import org.hamcrest.core.IsInstanceOf;28import org.hamcrest.Condition.Step;29import org.hamcrest.Matcher;30import org.hamcrest.MatcherAssert;31import org.hamcrest.core.Is;32import org.hamcrest.core.IsEqual;33import org.hamcrest.core.IsNot;34import org.hamcrest.core.IsSame;35import org.hamcrest.core.IsNull;36import org.hamcrest.core.IsInstanceOf;37import org.hamcrest

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Interface Condition.Step

Using AI Code Generation

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1import org.hamcrest.Condition.Step;2import org.hamcrest.MatcherAssert;3import org.hamcrest.Matchers;4import org.hamcrest.core.Is;5import org.junit.Test;6public class ConditionTest {7 public void testCondition() {8 MatcherAssert.assertThat("Hello World!", new Step<String>() {9 public String apply() {10 return "Hello World!";11 }12 public String description() {13 return "Hello World!";14 }15 public boolean matches(String o) {16 return o.equals("Hello World!");17 }18 });19 }20 public void testCondition2() {21 MatcherAssert.assertThat("Hello World!", new Step<String>() {22 public String apply() {23 return "Hello World!";24 }25 public String description() {26 return "Hello World!";27 }28 public boolean matches(String o) {29 return o.equals("Hello World!");30 }31 }, Matchers.equalTo("Hello World!"));32 }33 public void testCondition3() {34 MatcherAssert.assertThat("Hello World!", new Step<String>() {35 public String apply() {36 return "Hello World!";37 }38 public String description() {39 return "Hello World!";40 }41 public boolean matches(String o) {42 return o.equals("Hello World!");43 }44 }, Is.is("Hello World!"));45 }46}47In the above example, we have used the assertThat() method of MatcherAssert class to check whether the given string is equal to “Hello World!”. This method takes three arguments. The first argument is the actual value. The second argument is

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Interface Condition.Step

Using AI Code Generation

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1import org.hamcrest.Condition.Step2import org.hamcrest.Matcher3import org.hamcrest.MatcherAssert.assertThat4import org.hamcrest.Matchers.*5import org.hamcrest.core.Is.is6import org.hamcrest.Condition7import org.hamcrest.Matcher8import org.hamcrest.MatcherAssert.assertThat9import org.hamcrest.Matchers.*10import org.hamcrest.core.Is.is11import org.hamcrest.Condition12import org.hamcrest.Matcher13import org.hamcrest.MatcherAssert.assertThat14import org.hamcrest.Matchers.*15import org.hamcrest.core.Is.is16import org.hamcrest.Condition17import org.hamcrest.Matcher18import org.hamcrest.MatcherAssert.assertThat19import org.hamcrest.Matchers.*20import org.hamcrest.core.Is.is21import org.hamcrest.Condition22import org.hamcrest.Matcher23import org.hamcrest.MatcherAssert.assertThat24import org.hamcrest.Matchers.*25import org.hamcrest.core.Is.is26import org.hamcrest.Condition27import org.hamcrest.Matcher28import org.hamcrest.MatcherAssert.assertThat29import org.hamcrest.Matchers.*30import org.hamcrest.core.Is.is31import org.hamcrest.Condition32import org.hamcrest.Matcher33import org.hamcrest.MatcherAssert.assertThat34import org.hamcrest.Matchers.*35import org.hamcrest.core.Is.is36import org.hamcrest.Condition37import org.hamcrest.Matcher38import org.hamcrest.MatcherAssert.assertThat39import org.hamcrest.Matchers.*40import org.hamcrest.core.Is.is41import org.hamcrest.Condition42import org.hamcrest.Matcher43import org.hamcrest.MatcherAssert.assertThat44import org.hamcrest.Matchers.*45import org.hamcrest.core.Is.is46import org.hamcrest.Condition47import org.hamcrest.Matcher48import org.hamcrest.MatcherAssert.assertThat49import org.hamcrest.Matchers.*50import org.hamcrest.core.Is.is51import org.hamcrest.Condition52import org.hamcrest.Matcher53import org.hamcrest.MatcherAssert.assertThat54import org.hamcrest.Matchers.*55import org.hamcrest.core.Is.is56import org.hamcrest.Condition57import org.hamcrest.Matcher58import org.hamcrest.MatcherAssert.assertThat59import org.hamcrest.Matchers.*60import org.hamcrest.core.Is.is61import org.hamcrest.Condition

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Interface Condition.Step

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1import org.hamcrest.Condition2import org.hamcrest.Matcher3import org.hamcrest.MatcherAssert4import org.hamcrest.Matchers5def "test"() {6 def matcher = new Condition<>(7 { it == "expected" },8 MatcherAssert.assertThat("actual", matcher)9}10 at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)11 at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)12 at org.example.ConditionSpec.test(ConditionSpec.groovy:18)

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Interface Condition.Step

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1import org.hamcrest.Condition.Step2import org.hamcrest.Matcher3import org.hamcrest.MatcherAssert.assertThat4import org.hamcrest.Matchers.*5import org.hamcrest.core.Is.is6import org.hamcrest.Condition7import org.hamcrest.Matcher8import org.hamcrest.MatcherAssert.assertThat9import org.hamcrest.Matchers.*10import org.hamcrest.core.Is.is11import org.hamcrest.Condition12import org.hamcrest.Matcher13import org.hamcrest.MatcherAssert.assertThat14import org.hamcrest.Matchers.*15import org.hamcrest.core.Is.is16import org.hamcrest.Condition17import org.hamcrest.Matcher18import org.hamcrest.MatcherAssert.assertThat19import org.hamcrest.Matchers.*20import org.hamcrest.core.Is.is21import org.hamcrest.Condition22import org.hamcrest.Matcher23import org.hamcrest.MatcherAssert.assertThat24import org.hamcrest.Matchers.*25import org.hamcrest.core.Is.is26import org.hamcrest.Condition27import org.hamcrest.Matcher28import org.hamcrest.MatcherAssert.assertThat29import org.hamcrest.Matchers.*30import org.hamcrest.core.Is.is31import org.hamcrest.Condition32import org.hamcrest.Matcher33import org.hamcrest.MatcherAssert.assertThat34import org.hamcrest.Matchers.*35import org.hamcrest.core.Is.is36import org.hamcrest.Condition37import org.hamcrest.Matcher38import org.hamcrest.MatcherAssert.assertThat39import org.hamcrest.Matchers.*40import org.hamcrest.core.Is.is41import org.hamcrest.Condition42import org.hamcrest.Matcher43import org.hamcrest.MatcherAssert.assertThat44import org.hamcrest.Matchers.*45import org.hamcrest.core.Is.is46import org.hamcrest.Condition47import org.hamcrest.Matcher48import org.hamcrest.MatcherAssert.assertThat49import org.hamcrest.Matchers.*50import org.hamcrest.core.Is.is51import org.hamcrest.Condition52import org.hamcrest.Matcher53import org.hamcrest.MatcherAssert.assertThat54import org.hamcrest.Matchers.*55import org.hamcrest.core.Is.is56import org.hamcrest.Condition57import org.hamcrest.Matcher58import org.hamcrest.MatcherAssert.assertThat59import org.hamcrest.Matchers.*60import org.hamcrest.core.Is.is61import org.hamcrest.Condition

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Interface Condition.Step

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1import org.hamcrest.Condition2import org.hamcrest.Matcher3import org.hamcrest.MatcherAssert4import org.hamcrest.Matchers5def "test"() {6 def matcher = new Condition<>(7 { it == "expected" },8 MatcherAssert.assertThat("actual", matcher)9}10 at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:20)11 at org.hamcrest.MatcherAssert.assertThat(MatcherAssert.java:8)12 at org.example.ConditionSpec.test(ConditionSpec.groovy:18)

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