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How to use describeTo method of org.hamcrest.CustomTypeSafeMatcher class
Best junit code snippet using org.hamcrest.CustomTypeSafeMatcher.describeTo
Source:Matchers.java 
...55 final String actualMl = literal.toString();56 return literal.value.equals(comparable)57 && actualMl.equals(ml);58 }59 public void describeTo(Description description) {60 description.appendText("literal with value " + comparable61 + " and ML " + ml);62 }63 };64 }65 /** Matches an AST node by its string representation. */66 static Matcher<AstNode> isAst(boolean parenthesize, String expected) {67 return isAst(AstNode.class, parenthesize, expected);68 }69 /** Matches an AST node by its string representation. */70 static <T extends AstNode> Matcher<T> isAst(Class<? extends T> clazz,71 boolean parenthesize, String expected) {72 return new CustomTypeSafeMatcher<T>("ast with value [" + expected + "]") {73 protected boolean matchesSafely(T t) {74 assertThat(clazz.isInstance(t), is(true));75 final String s =76 stringValue(t);77 return s.equals(expected);78 }79 private String stringValue(T t) {80 return t.unparse(new AstWriter().withParenthesize(parenthesize));81 }82 @Override protected void describeMismatchSafely(T item,83 Description description) {84 description.appendText("was ").appendValue(stringValue(item));85 }86 };87 }88 /** Matches an Code node by its string representation. */89 static Matcher<Code> isCode(String expected) {90 return new CustomTypeSafeMatcher<Code>("code " + expected) {91 @Override protected boolean matchesSafely(Code code) {92 final String plan = Codes.describe(code);93 return plan.equals(expected);94 }95 @Override protected void describeMismatchSafely(Code code,96 Description description) {97 final String plan = Codes.describe(code);98 description.appendText("was ").appendValue(plan);99 }100 };101 }102 /** Matches a Code if it is wholly within Calcite. */103 static Matcher<Code> isFullyCalcite() {104 return new CustomTypeSafeMatcher<Code>("code is all Calcite") {105 protected boolean matchesSafely(Code code) {106 final String plan = Codes.describe(code);107 return plan.startsWith("calcite(") // instanceof CalciteCode108 && !plan.contains("morelScalar")109 && !plan.contains("morelTable");110 }111 };112 }113 static List<Object> list(Object... values) {114 return Arrays.asList(values);115 }116 static Map<Object, Object> map(Object... keyValues) {117 final LinkedHashMap<Object, Object> map = new LinkedHashMap<>();118 for (int i = 0; i < keyValues.length / 2; i++) {119 map.put(keyValues[i * 2], keyValues[i * 2 + 1]);120 }121 return map;122 }123 @SafeVarargs124 static <E> Matcher<Iterable<E>> equalsUnordered(E... elements) {125 final Set<E> expectedSet = Sets.newHashSet(elements);126 return new TypeSafeMatcher<Iterable<E>>() {127 protected boolean matchesSafely(Iterable<E> item) {128 //noinspection rawtypes129 return Sets.newHashSet((Iterable) item).equals(expectedSet);130 }131 public void describeTo(Description description) {132 description.appendText("equalsUnordered").appendValue(expectedSet);133 }134 };135 }136 @SafeVarargs137 static <E> Matcher<Iterable<E>> equalsOrdered(E... elements) {138 final List<E> expectedList = Arrays.asList(elements);139 return new TypeSafeMatcher<Iterable<E>>() {140 protected boolean matchesSafely(Iterable<E> item) {141 return Lists.newArrayList(item).equals(expectedList);142 }143 public void describeTo(Description description) {144 description.appendText("equalsOrdered").appendValue(expectedList);145 }146 };147 }148 @SuppressWarnings({"unchecked", "rawtypes"})149 static <E> Matcher<E> isUnordered(E expected) {150 final E expectedMultiset = expected instanceof Iterable151 ? (E) ImmutableMultiset.copyOf((Iterable) expected)152 : expected;153 return new TypeSafeMatcher<E>() {154 @Override public void describeTo(Description description) {155 description.appendText("equalsOrdered").appendValue(expectedMultiset);156 }157 @Override protected boolean matchesSafely(E actual) {158 final E actualMultiset = expectedMultiset instanceof Multiset159 && (actual instanceof Iterable)160 && !(actual instanceof Multiset)161 ? (E) ImmutableMultiset.copyOf((Iterable) actual)162 : actual;163 return expectedMultiset.equals(actualMultiset);164 }165 };166 }167 static Matcher<Throwable> throwsA(String message) {168 return new CustomTypeSafeMatcher<Throwable>("throwable: " + message) {169 @Override protected boolean matchesSafely(Throwable item) {170 return item.toString().contains(message);171 }172 };173 }174 static <T extends Throwable> Matcher<Throwable> throwsA(Class<T> clazz,175 Matcher<?> messageMatcher) {176 return new CustomTypeSafeMatcher<Throwable>(clazz + " with message "177 + messageMatcher) {178 @Override protected boolean matchesSafely(Throwable item) {179 return clazz.isInstance(item)180 && messageMatcher.matches(item.getMessage());181 }182 };183 }184 /** Creates a Matcher that behaves the same as a given delegate Matcher,185 * but remembers the value that was compared.186 *187 * @param <T> Type of expected item */188 public static <T> LearningMatcher<T> learning(Class<T> type) {189 return new LearningMatcherImpl<>(Is.isA(type));190 }191 /** Creates a Matcher that matches an Applicable, calls it with the given192 * argument, and checks the result. */193 static Matcher<Object> whenAppliedTo(Object arg,194 Matcher<Object> resultMatcher) {195 return new CallingMatcher(arg, resultMatcher);196 }197 /** Creates a Matcher that matches a Type based on {@link Type#moniker()}. */198 static Matcher<Type> hasMoniker(String expectedMoniker) {199 return new CustomTypeSafeMatcher<Type>("type with moniker ["200 + expectedMoniker + "]") {201 @Override protected boolean matchesSafely(Type type) {202 return type.moniker().equals(expectedMoniker);203 }204 };205 }206 /** Creates a Matcher that matches a {@link DataType} with given type207 * constructors. */208 static Matcher<DataType> hasTypeConstructors(String expected) {209 return new CustomTypeSafeMatcher<DataType>("datatype with constructors "210 + expected) {211 @Override protected boolean matchesSafely(DataType type) {212 return type.typeConstructors.toString().equals(expected);213 }214 };215 }216 /** Creates a Matcher that tests for a sub-class and then makes another217 * test.218 *219 * @param <T> Value type220 * @param <T2> Required subtype */221 static <T, T2 extends T> Matcher<T> instanceOfAnd(Class<T2> expectedClass,222 Matcher<T2> matcher) {223 return new TypeSafeDiagnosingMatcher<T>() {224 @Override protected boolean matchesSafely(T item,225 Description mismatchDescription) {226 if (!expectedClass.isInstance(item)) {227 mismatchDescription.appendText("expected instance of " + expectedClass228 + " but was " + item + " (a " + item.getClass() + ")");229 return false;230 }231 if (!matcher.matches(item)) {232 matcher.describeMismatch(item, mismatchDescription);233 return false;234 }235 return true;236 }237 @Override public void describeTo(Description description) {238 description.appendText("instance of " + expectedClass + " and ");239 matcher.describeTo(description);240 }241 };242 }243 /** Matcher that remembers the actual value it was.244 *245 * @param <T> Type of expected item */246 public interface LearningMatcher<T> extends Matcher<T> {247 T get();248 }249 /** Matcher that performs an action when a value is matched.250 *251 * @param <T> Type of expected item */252 private abstract static class MatcherWithConsumer<T> extends BaseMatcher<T> {253 final Matcher<T> matcher;254 MatcherWithConsumer(Matcher<T> matcher) {255 this.matcher = matcher;256 }257 protected abstract void consume(T t);258 @SuppressWarnings("unchecked")259 @Override public boolean matches(Object o) {260 if (matcher.matches(o)) {261 consume((T) o);262 return true;263 } else {264 return false;265 }266 }267 @Override public void describeMismatch(Object o,268 Description description) {269 matcher.describeMismatch(o, description);270 }271 @Override public void describeTo(Description description) {272 matcher.describeTo(description);273 }274 }275 /** Implementation of {@link LearningMatcher}.276 *277 * @param <T> Type of expected item */278 private static class LearningMatcherImpl<T> extends MatcherWithConsumer<T>279 implements LearningMatcher<T> {280 final List<T> list = new ArrayList<>();281 LearningMatcherImpl(Matcher<T> matcher) {282 super(matcher);283 }284 @Override public T get() {285 return list.get(0);286 }287 @Override protected void consume(T t) {288 list.add(t);289 }290 }291 /** Helper for {@link #whenAppliedTo(Object, Matcher)}. */292 private static class CallingMatcher extends BaseMatcher<Object> {293 private final Object arg;294 private final Matcher<Object> resultMatcher;295 CallingMatcher(Object arg, Matcher<Object> resultMatcher) {296 this.arg = arg;297 this.resultMatcher = resultMatcher;298 }299 @Override public void describeTo(Description description) {300 description.appendText("calls with ")301 .appendValue(arg)302 .appendText(" and returns ")303 .appendDescriptionOf(resultMatcher);304 }305 @Override public boolean matches(Object o) {306 if (!(o instanceof Applicable)) {307 return false;308 }309 final Applicable applicable = (Applicable) o;310 final Object result = applicable.apply(Codes.emptyEnv(), arg);311 return resultMatcher.matches(result);312 }313 }...
Source:CustomMatchers.java
...46 protected boolean matchesSafely(T item) {47 return predicate.test(item);48 }49 @Override50 public void describeTo(Description description) {51 description.appendValue(predicate);52 }53 };54 }55 /**56 * Matcher for a collection of a given size.57 * @param size of collection58 * @return matcher for a collection of a given size59 */60 public static Matcher<Collection<?>> hasSize(final int size) {61 return new TypeSafeMatcher<Collection<?>>() {62 @Override63 protected boolean matchesSafely(Collection<?> collection) {64 return collection != null && collection.size() == size;65 }66 @Override67 public void describeTo(Description description) {68 description.appendText("hasSize(").appendValue(size).appendText(")");69 }70 };71 }72 /**73 * Matcher for an empty collection.74 * @return matcher for an empty collection75 */76 public static Matcher<Collection<?>> isEmpty() {77 return new TypeSafeMatcher<Collection<?>>() {78 @Override79 protected boolean matchesSafely(Collection<?> collection) {80 return collection != null && collection.isEmpty();81 }82 @Override83 public void describeTo(Description description) {84 description.appendText("isEmpty()");85 }86 };87 }88 /**89 * Matcher for a point at a given location.90 * @param expected expected location91 * @return matcher for a point at a given location92 */93 public static Matcher<? super Point2D> is(final Point2D expected) {94 return new CustomTypeSafeMatcher<Point2D>(Objects.toString(expected)) {95 @Override96 protected boolean matchesSafely(Point2D actual) {97 return expected.distance(actual) <= 0.0000001;98 }99 };100 }101 /**102 * Matcher for a point at a given location.103 * @param expected expected location104 * @return matcher for a point at a given location105 */106 public static Matcher<? super LatLon> is(final LatLon expected) {107 return new CustomTypeSafeMatcher<LatLon>(Objects.toString(expected)) {108 @Override109 protected boolean matchesSafely(LatLon actual) {110 return Math.abs(expected.getX() - actual.getX()) <= LatLon.MAX_SERVER_PRECISION111 && Math.abs(expected.getY() - actual.getY()) <= LatLon.MAX_SERVER_PRECISION;112 }113 };114 }115 /**116 * Matcher for a point at a given location.117 * @param expected expected location118 * @return matcher for a point at a given location119 */120 public static Matcher<? super EastNorth> is(final EastNorth expected) {121 return new CustomTypeSafeMatcher<EastNorth>(Objects.toString(expected)) {122 @Override123 protected boolean matchesSafely(EastNorth actual) {124 return Math.abs(expected.getX() - actual.getX()) <= LatLon.MAX_SERVER_PRECISION125 && Math.abs(expected.getY() - actual.getY()) <= LatLon.MAX_SERVER_PRECISION;126 }127 };128 }129 /**130 * Matcher for a {@link Bounds} object131 * @param expected expected bounds132 * @param tolerance acceptable deviation (epsilon)133 * @return Matcher for a {@link Bounds} object134 */135 public static Matcher<Bounds> is(final Bounds expected, double tolerance) {136 return new TypeSafeMatcher<Bounds>() {137 @Override138 public void describeTo(Description description) {139 description.appendText("is ")140 .appendValue(expected)141 .appendText(" (tolerance: " + tolerance + ")");142 }143 @Override144 protected void describeMismatchSafely(Bounds bounds, Description mismatchDescription) {145 mismatchDescription.appendText("was ").appendValue(bounds);146 }147 @Override148 protected boolean matchesSafely(Bounds bounds) {149 return Math.abs(expected.getMinLon() - bounds.getMinLon()) <= tolerance &&150 Math.abs(expected.getMinLat() - bounds.getMinLat()) <= tolerance &&151 Math.abs(expected.getMaxLon() - bounds.getMaxLon()) <= tolerance &&152 Math.abs(expected.getMaxLat() - bounds.getMaxLat()) <= tolerance;153 }154 };155 }156 /**157 * Matcher for a floating point number.158 * @param expected expected value159 * @param errorMode the error mode160 * @param tolerance admissible error161 * @return Matcher for a floating point number162 */163 public static Matcher<Double> isFP(final double expected, ErrorMode errorMode, double tolerance) {164 return new TypeSafeMatcher<Double>() {165 @Override166 public void describeTo(Description description) {167 description.appendText("is ")168 .appendValue(expected)169 .appendText(" (tolerance")170 .appendText(errorMode == ErrorMode.RELATIVE ? ", relative:" : ":")171 .appendText(Double.toString(tolerance))172 .appendText(")");173 }174 @Override175 protected void describeMismatchSafely(Double was, Description mismatchDescription) {176 mismatchDescription.appendText("was ").appendValue(was);177 if (errorMode == ErrorMode.RELATIVE) {178 mismatchDescription.appendText(" (actual relative error: ")179 .appendText(String.format(Locale.US, "%.2e", Math.abs((was - expected) / expected)))180 .appendText(")");...
Source:HeaderMatchers.java
...42 public boolean matches(Object item) {43 return item != null && StringUtils.isNotBlank(item.toString());44 }45 @Override46 public void describeTo(Description description) {47 description.appendText("set");48 }49 };50 }51 public static Matcher<String> headerNotPresent() {52 return new BaseMatcher<String>() {53 @Override54 public boolean matches(Object item) {55 return item == null || StringUtils.isBlank(item.toString());56 }57 @Override58 public void describeTo(Description description) {59 description.appendText("absent or empty");60 }61 };62 }63 public static Matcher<String> isLink(String uri, String rel) {64 final Link expected = Link.fromUri(uri).rel(rel).build();65 return new CustomTypeSafeMatcher<String>(String.format("a Link-Header to <%s> with rel='%s'", uri, rel)) {66 @Override67 protected boolean matchesSafely(String item) {68 return expected.equals(new LinkDelegate().fromString(item));69 }70 };71 }72 public static Matcher<String> isValidEntityTag() {...
Source:CarHamcrestMatcher.java
...38 return new CarHamcrestMatcher(matcher);39 }4041 @Override42 public void describeTo(Description desc) {43 this.matcher.describeTo(desc);44 }4546 @Override47 protected boolean matchesSafely(Car car) {48 return this.matcher.matches(car);49 }5051 private static class HasEngineType extends CustomTypeSafeMatcher<Car> {5253 private EngineType engineType;5455 public HasEngineType(EngineType engineType) {56 super("engine type is " + engineType);57 this.engineType = engineType;
...
Source:CustomViewMatchers.java
...28 this.viewId = viewId;29 this.shouldExtractDigits = shouldExtractDigits;30 }31 @Override32 public void describeTo(final Description description) {33 description.appendText("Has EditText/TextView the value equals to view: " + viewId);34 }35 @Override36 public boolean matchesSafely(final View view) {37 final View viewById = view.getRootView().findViewById(viewId);38 if (!(view instanceof TextView || !(viewById instanceof TextView))) {39 return false;40 }41 //noinspection ConstantConditions42 final String targetText = ((TextView) viewById).getText().toString();43 //noinspection ConstantConditions44 String text = ((TextView) view).getText().toString();45 text = shouldExtractDigits ? text.replaceAll(EXTRACT_DIGITS_REGEX, "") : text;46 return text.equalsIgnoreCase(targetText);...
Source:CarsHamcrestMatcher.java
...32 return new CarsHamcrestMatcher(matcher);33 }3435 @Override36 public void describeTo(Description desc) {37 this.matcher.describeTo(desc);38 }3940 @Override41 protected boolean matchesSafely(Collection<Car> cars) {42 43 StringWriter sw = new StringWriter();44 Closure writer = closure(); { of(sw).write(var(String.class)); }45 assertEquals(1, writer.getFreeVarsNumber());46 writer.each(asList("first", "second", "third"));47 assertEquals("firstsecondthird", sw.toString());4849 return this.matcher.matches(cars);50 }51
...
Source:CustomTypeSafeMatcher.java
...32/* 32 */ this.fixedDescription = description;33/* */ }34/* */ 35/* */ 36/* */ public final void describeTo(Description description) {37/* 37 */ description.appendText(this.fixedDescription);38/* */ }39/* */ }40/* Location: C:\Users\CAR\Desktop\sab\SAB_projekat_1920\SAB_projekat_1920\SAB_projekat_1920.jar!\org\hamcrest\CustomTypeSafeMatcher.class41 * Java compiler version: 5 (49.0)42 * JD-Core Version: 1.1.343 */...
describeTo
Using AI Code Generation
1public class CustomTypeSafeMatcherTest {2 public void testCustomTypeSafeMatcher() {3 assertThat(2, new CustomTypeSafeMatcher<Integer>("even number") {4 protected boolean matchesSafely(Integer item) {5 return item % 2 == 0;6 }7 });8 }9}10package com.journaldev.hamcrest;11import static org.hamcrest.MatcherAssert.assertThat;12import static org.hamcrest.Matchers.equalTo;13import org.hamcrest.CustomTypeSafeMatcher;14import org.junit.Test;15public class CustomTypeSafeMatcherExample2 {16 public void testCustomTypeSafeMatcher() {17 assertThat("Hello World", new CustomTypeSafeMatcher<String>("contains World") {18 protected boolean matchesSafely(String item) {19 return item.contains("World");20 }21 });22 }23 public void testCustomTypeSafeMatcher2() {24 assertThat("Hello World", new CustomTypeSafeMatcher<String>("contains World") {25 protected boolean matchesSafely(String item) {26 return item.contains("World");27 }28 protected void describeMismatchSafely(String item, Description mismatchDescription) {29 mismatchDescription.appendText("was ").appendValue(item);30 }31 });32 }33 public void testCustomTypeSafeMatcher3() {34 assertThat("Hello World", new CustomTypeSafeMatcher<String>("contains World") {
describeTo
Using AI Code Generation
1package com.example;2import org.hamcrest.CustomTypeSafeMatcher;3import org.hamcrest.MatcherAssert;4import org.hamcrest.Matcher;5import org.hamcrest.Description;6import org.hamcrest.TypeSafeMatcher;7import org.hamcrest.core.IsEqual;8import org.hamcrest.core.IsNot;9public class Example {10 public static void main(String[] args) {11 Matcher<String> matcher = new CustomTypeSafeMatcher<String>("a substring") {12 protected boolean matchesSafely(String item) {13 return item.contains(substring);14 }15 };16 MatcherAssert.assertThat("a string containing a substring", matcher);17 MatcherAssert.assertThat("a string not containing a substring", IsNot.not(matcher));18 Matcher<String> matcher2 = new CustomTypeSafeMatcher<String>("a substring") {19 protected boolean matchesSafely(String item) {20 return item.contains(substring);21 }22 public void describeMismatchSafely(String item, Description mismatchDescription) {23 mismatchDescription.appendText("was \"").appendText(item).appendText("\"");24 }25 };26 MatcherAssert.assertThat("a string containing a substring", matcher2);27 MatcherAssert.assertThat("a string not containing a substring", IsNot.not(matcher2));28 Matcher<String> matcher3 = new CustomTypeSafeMatcher<String>("a substring")
describeTo
Using AI Code Generation
1public class CustomTypeSafeMatcherTest {2 private static final Matcher<CustomTypeSafeMatcher.Book> BOOK_MATCHER = new CustomTypeSafeMatcher.BookMatcher();3 private static final Matcher<CustomTypeSafeMatcher.Book> BOOK_MATCHER1 = new CustomTypeSafeMatcher.BookMatcher1();4 public void testBookMatcher() {5 assertThat(new CustomTypeSafeMatcher.Book("A Tale of Two Cities", 1859), BOOK_MATCHER);6 assertThat(new CustomTypeSafeMatcher.Book("A Tale of Two Cities", 1859), BOOK_MATCHER1);7 }8}9public class CustomTypeSafeMatcher {10 public static class Book {11 private final String title;12 private final int yearPublished;13 public Book(String title, int yearPublished) {14 this.title = title;15 this.yearPublished = yearPublished;16 }17 public String getTitle() {18 return title;19 }20 public int getYearPublished() {21 return yearPublished;22 }23 }24 public static class BookMatcher extends TypeSafeMatcher<Book> {25 private String title;26 private int yearPublished;27 public BookMatcher withTitle(String title) {28 this.title = title;29 return this;30 }31 public BookMatcher publishedIn(int yearPublished) {32 this.yearPublished = yearPublished;33 return this;34 }35 public boolean matchesSafely(Book book) {36 return book.getTitle().equals(title) && book.getYearPublished() == yearPublished;37 }38 public void describeTo(Description description) {39 description.appendText("a book called ").appendValue(title).appendText(" published in ").appendValue(yearPublished);40 }41 }42 public static class BookMatcher1 extends TypeSafeMatcher<Book> {43 private String title;44 private int yearPublished;45 public BookMatcher1 withTitle(String title) {46 this.title = title;47 return this;48 }49 public BookMatcher1 publishedIn(int yearPublished) {50 this.yearPublished = yearPublished;51 return this;52 }53 public boolean matchesSafely(Book book) {54 return book.getTitle().equals
describeTo
Using AI Code Generation
1import org.hamcrest.CustomTypeSafeMatcher;2import org.hamcrest.Description;3import org.hamcrest.Matcher;4import org.hamcrest.StringDescription;5public class CustomMatcher extends CustomTypeSafeMatcher<String> {6 public CustomMatcher(Matcher<String> matcher) {7 super(matcher);8 }9 protected String getMismatchSafely(String item) {10 return item;11 }12 protected void describeMismatchSafely(String item, Description mismatchDescription) {13 mismatchDescription.appendText("was ").appendValue(item);14 }15 public void describeTo(Description description) {16 description.appendText("a string");17 }18}19public class CustomMatcherTest {20 public void testCustomMatcher() {21 String actual = "abc";22 String expected = "xyz";23 assertThat(actual, new CustomMatcher(equalTo(expected)));24 }25}26public class CustomMatcherTest {27 public void testCustomMatcher() {28 String actual = "abc";29 String expected = "xyz";30 assertThat(actual, new CustomMatcher(equalTo(expected)));31 }32}33public class CustomMatcherTest {34 public void testCustomMatcher() {35 String actual = "abc";36 String expected = "xyz";37 assertThat(actual, new CustomMatcher(equalTo(expected)));38 }39}40public class CustomMatcherTest {41 public void testCustomMatcher() {42 String actual = "abc";43 String expected = "xyz";44 assertThat(actual, new CustomMatcher(equalTo(expected)));45 }46}47public class CustomMatcherTest {48 public void testCustomMatcher() {49 String actual = "abc";50 String expected = "xyz";51 assertThat(actual, new CustomMatcher(equalTo(expected)));52 }53}54public class CustomMatcherTest {
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