Join the 1-day Testing & QA Summit featuring 15+ Expert Speakers.Register for FREE! 
How to use describeTo method of org.hamcrest.FeatureMatcher class
Best junit code snippet using org.hamcrest.FeatureMatcher.describeTo
Source:ParserMatchers.java 
...77 protected boolean matchesSafely(final ConfiguredStatement<T> item) {78 return statement.matches(PreparedStatement.of(item.getStatementText(), item.getStatement()));79 }80 @Override81 public void describeTo(final Description description) {82 statement.describeTo(description);83 }84 };85 }86 public static <T extends Statement> Matcher<ConfiguredStatement<T>> configured(87 final Map<String, Object> properties,88 final KsqlConfig config89 ) {90 return new TypeSafeMatcher<ConfiguredStatement<T>>() {91 @Override92 protected boolean matchesSafely(final ConfiguredStatement<T> item) {93 return Objects.equals(properties, item.getSessionConfig().getOverrides())94 && Objects.equals(config, item.getSessionConfig().getConfig(false));95 }96 @Override97 public void describeTo(final Description description) {98 description.appendText(properties.toString() + ", " + config);99 }100 };101 }102 public static <T extends Statement> Matcher<ConfiguredStatement<T>> configured(103 final Matcher<PreparedStatement<T>> statement,104 final Map<String, Object> properties,105 final KsqlConfig config106 ) {107 return new TypeSafeMatcher<ConfiguredStatement<T>>() {108 @Override109 protected boolean matchesSafely(final ConfiguredStatement<T> item) {110 return statement.matches(PreparedStatement.of(item.getStatementText(), item.getStatement()))111 && Objects.equals(properties, item.getSessionConfig().getOverrides())112 && Objects.equals(config, item.getSessionConfig().getConfig(false));113 }114 @Override115 public void describeTo(final Description description) {116 statement.describeTo(description);117 description.appendText(properties.toString() + ", " + config);118 }119 };120 }121 @SuppressWarnings("WeakerAccess")122 public static final class StatementTextMatcher<T extends Statement>123 extends FeatureMatcher<PreparedStatement<T>, String> {124 public StatementTextMatcher(final Matcher<? super String> textMatcher) {125 super(textMatcher, "a prepared statement with text", "statement text");126 }127 @Override128 protected String featureValueOf(final PreparedStatement<T> actual) {129 return actual.getStatementText();130 }...
Source:StateMatchers.java
...16 }17 private static Matcher<JState> operandMatching(final Matcher<Object> expectedMatcher) {18 return new TypeSafeDiagnosingMatcher<JState>(JState.class) {19 @Override20 public void describeTo(final Description description) {21 description.appendText(22 "state with top of operand stack matching ")23 .appendDescriptionOf(expectedMatcher);24 }25 @Override26 protected boolean matchesSafely(final JState item,27 final Description mismatchDescription) {28 final Object operand = item.peekOperand();29 mismatchDescription.appendText("state with top of operand stack ");30 expectedMatcher.describeMismatch(operand, mismatchDescription);31 return expectedMatcher.matches(operand);32 }33 };34 }35 public static Matcher<? super JState> instructionEqual(final Instruction expectedInstruction) {36 return new TypeSafeDiagnosingMatcher<JState>(JState.class) {37 @Override38 public void describeTo(final Description description) {39 description.appendText("state with next instruction equal to ")40 .appendValue(expectedInstruction);41 }42 @Override43 protected boolean matchesSafely(final JState item,44 final Description mismatchDescription) {45 final Instruction instruction = item.instruction();46 mismatchDescription.appendText("state with next instruction ")47 .appendValue(instruction);48 return equalTo(expectedInstruction).matches(instruction);49 }50 };51 }52 public static Matcher<? super JState> terminalInstruction() {53 return new TypeSafeDiagnosingMatcher<JState>(JState.class) {54 @Override55 public void describeTo(final Description description) {56 description.appendText("instruction with no successor");57 }58 @Override59 protected boolean matchesSafely(final JState item,60 final Description mismatchDescription) {61 final Instruction instruction = item.instruction();62 mismatchDescription.appendText("instruction with successor ")63 .appendValue(instruction);64 return !instruction.hasNext();65 }66 };67 }68 public static Matcher<? super JState> stackSize(final int expectedSize) {69 return new TypeSafeDiagnosingMatcher<JState>(JState.class) {70 @Override71 public void describeTo(final Description description) {72 description.appendText("state with ").appendValue(expectedSize)73 .appendText(" stack frames");74 }75 @Override76 protected boolean matchesSafely(final JState item,77 final Description mismatchDescription) {78 final int actualSize = item.stack().size();79 mismatchDescription.appendText("state with ")80 .appendValue(actualSize).appendText(" stack frames");81 return equalTo(expectedSize).matches(actualSize);82 }83 };84 }85 public static Matcher<? super JState> normalTerminiationWithResult(final Object result) {...
Source:ProjectMatchers.java
...80 protected boolean matchesSafely(Provider<? extends T> item) {81 return !item.isPresent();82 }83 @Override84 public void describeTo(Description description) {85 }86 };87 }88 public static <T> Matcher<Provider<? extends T>> presentProvider() {89 return new TypeSafeMatcher<Provider<? extends T>>() {90 @Override91 protected boolean matchesSafely(Provider<? extends T> item) {92 return item.isPresent();93 }94 @Override95 public void describeTo(Description description) {96 }97 };98 }99 public static Matcher<PluginAware> hasPlugin(String pluginId) {100 return new TypeSafeMatcher<PluginAware>() {101 @Override102 protected boolean matchesSafely(PluginAware item) {103 return item.getPluginManager().hasPlugin(pluginId);104 }105 @Override106 public void describeTo(Description description) {107 }108 };109 }110 public static Matcher<Object> coordinate(String coordinate) {111 return new FeatureMatcher<Object, String>(equalTo(coordinate), "", "") {112 @Override113 protected String featureValueOf(Object actual) {114 Dependency dependency = null;115 if (actual instanceof Provider) {116 actual = ((Provider<?>) actual).get();117 }118 if (actual instanceof Dependency) {119 final StringBuilder builder = new StringBuilder();120 builder.append(((Dependency) actual).getGroup());...
Source:HttpServletRequestMatcherBuilder.java
...20 }21 return false;22 }23 @Override24 public void describeTo(Description description) {25 description.appendText("Contains header name ").appendDescriptionOf(valueMatcher);26 }27 });28 }29 public T withHeader (final String name, Matcher<? super String> valueMatcher) {30 String description = String.format("Header '%s'", name);31 return with(new FeatureMatcher<HttpServletRequest, String>(valueMatcher, description, description) {32 @Override33 protected String featureValueOf(HttpServletRequest request) {34 return request.getHeader(name);35 }36 });37 }38 public T withUri (Matcher<? super String> valueMatcher) {39 String description = "Request URI";40 return with(new FeatureMatcher<HttpServletRequest, String>(valueMatcher, description, description) {41 @Override42 protected String featureValueOf(HttpServletRequest request) {43 return request.getRequestURI();44 }45 });46 }47 public T withMethod (Matcher<? super String> valueMatcher) {48 String description = "HTTP Method";49 return with(new FeatureMatcher<HttpServletRequest, String>(valueMatcher, description, description) {50 @Override51 protected String featureValueOf(HttpServletRequest request) {52 return request.getMethod();53 }54 });55 }56 public T withContentType (Matcher<? super String> valueMatcher) {57 String description = "HTTP Content-Type";58 return with(new FeatureMatcher<HttpServletRequest, String>(valueMatcher, description, description) {59 @Override60 protected String featureValueOf(HttpServletRequest request) {61 return request.getContentType();62 }63 });64 }65 public T withParameter (final String name, Matcher<? super String> matcher) {66 String description = String.format("Parameter '%s'", name);67 return with(new FeatureMatcher<HttpServletRequest, String>(matcher, description, description) {68 @Override69 protected String featureValueOf(HttpServletRequest request) {70 return request.getParameter(name);71 }72 });73 }74 public T withParameterName (final Matcher<? super String> valueMatcher) {75 return with(new TypeSafeMatcher<HttpServletRequest>() {76 @Override77 protected boolean matchesSafely(HttpServletRequest request) {78 while (request.getParameterNames().hasMoreElements()) {79 String parameterName = request.getHeaderNames().nextElement();80 if (valueMatcher.matches(parameterName))81 return true;82 }83 return false;84 }85 @Override86 public void describeTo(Description description) {87 description.appendText("Contains parameter name ").appendDescriptionOf(valueMatcher);88 }89 });90 }91}...
Source:JsonObjectMatchers.java
...44 }45 return matches;46 }47 @Override48 public void describeTo(Description description) {49 description.appendText("a JsonObject with a property " + "'" + property + "'");50 }51 };52 }53 public static Matcher<JsonObject> hasProperties(String aProperty, String anotherProperty, String... moreProprties) {54 return new TypeSafeDiagnosingMatcher<JsonObject>() {55 @Override56 protected boolean matchesSafely(JsonObject item, Description mismatchDescription) {57 Set<String> required = required();58 HashSet<String> missing = newHashSet(required);59 missing.removeAll(item.fieldNames());60 boolean matches = missing.isEmpty();61 if (!matches) {62 mismatchDescription.appendText(63 "Expected properties " + missing + " were not present. The following properties are present: "64 + quoteEntries(item.fieldNames()));65 }66 return matches;67 }68 @Override69 public void describeTo(Description description) {70 description.appendText("a JsonObject with properties " + required());71 }72 private Set<String> required() {73 Set<String> required = newHashSet(moreProprties);74 required.add(anotherProperty);75 required.add(aProperty);76 return required;77 }78 };79 }80 private static String quoteEntries(Collection<? extends Object> entries) {81 return "[" +82 entries.stream()83 .map(property -> "\"" + property.toString() + "\"")...
Source:FeatureMatcher.java
...46/* 46 */ return true;47/* */ }48/* */ 49/* */ 50/* */ public final void describeTo(Description description) {51/* 51 */ description.appendText(this.featureDescription).appendText(" ").appendDescriptionOf(this.subMatcher);52/* */ }53/* */ }54/* Location: /home/arpit/Downloads/Picking-Tool-6.5.2.jar!/org/hamcrest/FeatureMatcher.class55 * Java compiler version: 5 (49.0)56 * JD-Core Version: 1.1.357 */...
Source:StatusMatcher.java
...2324 public static Matcher<IStatus> okStatus(){25 return new TypeSafeMatcher<IStatus>() {26 @Override27 public void describeTo(Description description) {28 description.appendText(Status.OK_STATUS.toString());29 }30 31 @Override32 protected boolean matchesSafely(IStatus item) {33 return item.isOK();34 }35 };36 }3738 public static FeatureMatcher<IStatus, Integer> severity(Matcher<? super Integer> matcher){39 return new FeatureMatcher<IStatus, Integer>(matcher, "validation result severity", "severity") { //$NON-NLS-1$ //$NON-NLS-2$40 @Override41 protected Integer featureValueOf(IStatus actual) {
...
Source:FeatureSetMatcher.java
...19 }20 protected <U> void add(FeatureMatcher<T, U> matcher) {21 featureMatchers.add(matcher);22 }23 public void describeTo(Description description) {24 combine().describeTo(description);25 }26 private AllOf<T> combine() {27 return new AllOf<T>(featureMatchers);28 }29}...
describeTo
Using AI Code Generation
1import org.hamcrest.FeatureMatcher;2import org.hamcrest.Matcher;3import org.junit.Test;4import static org.hamcrest.Matchers.equalTo;5import static org.hamcrest.Matchers.is;6import static org.junit.Assert.assertThat;7public class FeatureMatcherTest {8 public static class Person {9 private String name;10 private int age;11 public Person(String name, int age) {12 this.name = name;13 this.age = age;14 }15 public String getName() {16 return name;17 }18 public int getAge() {19 return age;20 }21 }22 public void testFeatureMatcher() {23 Person person = new Person("John", 25);24 assertThat(person, hasName(equalTo("John")));25 }26 public static Matcher<Person> hasName(Matcher<? super String> nameMatcher) {27 return new FeatureMatcher<Person, String>(nameMatcher, "name", "name") {28 protected String featureValueOf(Person actual) {29 return actual.getName();30 }31 };32 }33 public void testFeatureMatcherWithDescription() {34 Person person = new Person("John", 25);35 assertThat(person, hasName(is(equalTo("John")), "John's name"));36 }37 public static Matcher<Person> hasName(Matcher<? super String> nameMatcher, String description) {38 return new FeatureMatcher<Person, String>(nameMatcher, description, "name") {39 protected String featureValueOf(Person actual) {40 return actual.getName();41 }42 };43 }44}
describeTo
Using AI Code Generation
1import static org.hamcrest.MatcherAssert.assertThat;2import static org.hamcrest.Matchers.*;3import org.hamcrest.FeatureMatcher;4import org.hamcrest.Matcher;5import org.junit.Test;6public class FeatureMatcherTest {7 public static class Employee {8 private String name;9 private double salary;10 public Employee(String name, double salary) {11 this.name = name;12 this.salary = salary;13 }14 public String getName() {15 return name;16 }17 public double getSalary() {18 return salary;19 }20 }21 public void testFeatureMatcher() {22 Employee employee = new Employee("John", 10000);23 Matcher<Employee> salaryMatcher = new FeatureMatcher<Employee, Double>(equalTo(10000.0), "salary", "salary") {24 protected Double featureValueOf(Employee actual) {25 return actual.getSalary();26 }27 };28 assertThat(employee, salaryMatcher);29 }30}31org.hamcrest.FeatureMatcherTest > testFeatureMatcher() PASSED
describeTo
Using AI Code Generation
1import org.hamcrest.FeatureMatcher2import org.hamcrest.Matcher3import org.hamcrest.Matchers4import static org.hamcrest.MatcherAssert.assertThat5import static org.hamcrest.Matchers.equalTo6class Person {7}8def "should use feature matcher"() {9 def person = new Person(name: "John", age: 30)10 assertThat person, new FeatureMatcher<Person, String>(equalTo("John"), "name", "name") {11 protected String featureValueOf(Person person) {12 }13 }14}15def "should use feature matcher with custom description"() {16 def person = new Person(name: "John", age: 30)17 assertThat person, new FeatureMatcher<Person, String>(equalTo("John"), "name", "name") {18 protected String featureValueOf(Person person) {19 }20 protected void describeMismatchSafely(Person person, Description mismatchDescription) {21 mismatchDescription.appendText("was ").appendValue(person.name)22 }23 }24}25def "should use feature matcher with custom description and mismatch"() {26 def person = new Person(name: "John", age: 30)27 assertThat person, new FeatureMatcher<Person, String>(equalTo("John"), "name", "name") {28 protected String featureValueOf(Person person) {29 }30 protected void describeMismatchSafely(Person person, Description mismatchDescription) {31 mismatchDescription.appendText("was ").appendValue(person.name)32 }33 } && new FeatureMatcher<Person, Integer>(equalTo(30), "age", "age") {
describeTo
Using AI Code Generation
1 public static Matcher<String> hasLength(final int length) {2 return new FeatureMatcher<String, Integer>(equalTo(length), "a string of length", "length") {3 protected Integer featureValueOf(String actual) {4 return actual.length();5 }6 };7 }8 public static Matcher<String> hasLength(final int length) {9 return new FeatureMatcher<String, Integer>(equalTo(length), "a string of length", "length") {10 protected Integer featureValueOf(String actual) {11 return actual.length();12 }13 };14 }15 public static Matcher<String> hasLength(final int length) {16 return new FeatureMatcher<String, Integer>(equalTo(length), "a string of length", "length") {17 protected Integer featureValueOf(String actual) {18 return actual.length();19 }20 };21 }22 public static Matcher<String> hasLength(final int length) {23 return new FeatureMatcher<String, Integer>(equalTo(length), "a string of length", "length") {24 protected Integer featureValueOf(String actual) {25 return actual.length();26 }27 };28 }
describeTo
Using AI Code Generation
1import org.hamcrest.FeatureMatcher;2import org.hamcrest.Matcher;3import org.hamcrest.Description;4import org.hamcrest.Matchers;5import org.junit.Test;6import static org.junit.Assert.assertThat;7class Person {8 private String name;9 private int age;10 public Person(String name, int age) {11 this.name = name;12 this.age = age;13 }14 public String getName() { return name; }15 public int getAge() { return age; }16}17public class FeatureMatcherTest {18 public void testFeatureMatcher() {19 Matcher<Person> isAdult = new FeatureMatcher<Person, Integer>(20 Matchers.greaterThanOrEqualTo(18), "an adult", "age") {21 protected Integer featureValueOf(Person actual) {22 return actual.getAge();23 }24 };25 assertThat(new Person("John", 20), isAdult);26 assertThat(new Person("Mary", 10), Matchers.not(isAdult));27 }28}29Expected: an adult (<18>)30Expected :an adult (<18>)
describeTo
Using AI Code Generation
1import org.hamcrest.FeatureMatcher;2import org.hamcrest.BaseMatcher;3import org.hamcrest.Description;4import org.hamcrest.Matcher;5import org.junit.Test;6import org.junit.runner.RunWith;7import org.junit.runners.JUnit4;8import static org.hamcrest.CoreMatchers.is;9import static org.hamcrest.CoreMatchers.not;10import static org.hamcrest.MatcherAssert.assertThat;11@RunWith(JUnit4.class)12public class HamcrestFeatureMatcherTest {13 public void testFeatureMatcher() {14 final Matcher<String> contains = containsString("abc");15 final Matcher<String> containsMatcher = containsStringMatcher("abc");16 final Matcher<String> notContains = not(contains);17 final Matcher<String> notContainsMatcher = not(containsMatcher);18 final Matcher<String> containsFeatureMatcher = containsStringFeatureMatcher("abc");19 final Matcher<String> notContainsFeatureMatcher = not(containsFeatureMatcher);
describeTo
Using AI Code Generation
1import org.hamcrest.FeatureMatcher2import org.hamcrest.Matcher3import org.hamcrest.Matchers4def "should match string that contains substring"() {5 Matcher<String> matcher = new FeatureMatcher<String, String>(Matchers.containsString("bc"), "a string containing", "substring") {6 protected String featureValueOf(String actual) {7 return actual.substring(actual.indexOf("b"))8 }9 }10}11import org.hamcrest.FeatureMatcher12import org.hamcrest.Matcher13import org.hamcrest.Matchers14def "should match string that contains substring"() {15 Matcher<String> matcher = new FeatureMatcher<String, String>(Matchers.containsString("bc"), "a string containing", "substring") {16 protected String featureValueOf(String actual) {17 return actual.substring(actual.indexOf("b"))18 }19 protected void describeMismatchSafely(String item, Description mismatchDescription) {20 mismatchDescription.appendText("was ").appendValue(item).appendText(" which does not contain ").appendValue(featureValueOf(item))21 }22 }23}
JUnit Tutorial:
LambdaTest also has a detailed JUnit tutorial explaining its features, importance, advanced use cases, best practices, and more to help you get started with running your automation testing scripts.
JUnit Tutorial Chapters:
Here are the detailed JUnit testing chapters to help you get started:
- Importance of Unit testing - Learn why Unit testing is essential during the development phase to identify bugs and errors.
- Top Java Unit testing frameworks - Here are the upcoming JUnit automation testing frameworks that you can use in 2023 to boost your unit testing.
- What is the JUnit framework
- Why is JUnit testing important - Learn the importance and numerous benefits of using the JUnit testing framework.
- Features of JUnit - Learn about the numerous features of JUnit and why developers prefer it.
- JUnit 5 vs. JUnit 4: Differences - Here is a complete comparison between JUnit 5 and JUnit 4 testing frameworks.
- Setting up the JUnit environment - Learn how to set up your JUnit testing environment.
- Getting started with JUnit testing - After successfully setting up your JUnit environment, this chapter will help you get started with JUnit testing in no time.
- Parallel testing with JUnit - Parallel Testing can be used to reduce test execution time and improve test efficiency. Learn how to perform parallel testing with JUnit.
- Annotations in JUnit - When writing automation scripts with JUnit, we can use JUnit annotations to specify the type of methods in our test code. This helps us identify those methods when we run JUnit tests using Selenium WebDriver. Learn in detail what annotations are in JUnit.
- 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.
- Nested Tests In JUnit 5 - A nested class is a non-static class contained within another class in a hierarchical structure. It can share the state and setup of the outer class. Learn about nested annotations in JUnit 5 with examples.
- Best practices for JUnit testing - Learn about the best practices, such as always testing key methods and classes, integrating JUnit tests with your build, and more to get the best possible results.
- 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.
JUnit Certification:
You can also check out our JUnit certification if you wish to take your career in Selenium automation testing with JUnit to the next level.
Run junit automation tests on LambdaTest cloud grid
Perform automation testing on 3000+ real desktop and mobile devices online.
Most used method in FeatureMatcher
Try LambdaTest Now !!
Get 100 minutes of automation test minutes FREE!!
Was this article helpful?
