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How to use toString method of org.hamcrest.BaseMatcher class
Best junit code snippet using org.hamcrest.BaseMatcher.toString
Source:TestUtils.java 
...161 public boolean matches(Object arg0) {162 if(arg0==null) {163 arg0="";164 }165 return arg0.toString().equals(value.toString());166 }167 168 @Override169 public void describeTo(Description arg0) {170 arg0.appendText("lexicaly equal to ").appendValue(value.toString());171 }172 173 };174 }175 /**176 * Converts a Number to double, otherwise converts to string and then parses as double then matches to the given value.177 * @param value178 * @return179 */180 public static Matcher<? extends Object> numEqualTo (final double value, final double epsilon) {181 return new BaseMatcher<Object>() {182 183 @Override184 public boolean matches(Object obj) {185 double num;186 if(obj instanceof Number) {187 num = ((Number) obj).doubleValue();188 } else {189 num = Double.parseDouble(obj.toString());190 }191 return Math.abs(num-value)<epsilon;192 }193 194 @Override195 public void describeTo(Description arg0) {196 arg0.appendText("can be parsed as ").appendValue(value);197 arg0.appendText(" to within ").appendValue(epsilon);198 }199 200 };201 }202 /**203 * Converts a Number to long, otherwise converts to string and then parses as double then matches to the given value.204 * @param value205 * @return206 */207 public static Matcher<? extends Object> numEqualTo (final long value) {208 return new BaseMatcher<Object>() {209 210 @Override211 public boolean matches(Object obj) {212 double num;213 if(obj instanceof Number) {214 num = ((Number) obj).longValue();215 } else {216 num = Long.parseLong(obj.toString());217 }218 return num==value;219 }220 221 @Override222 public void describeTo(Description arg0) {223 arg0.appendText("can be parsed as ").appendValue(value);224 }225 226 };227 }228 public static Matcher<String> asHexInt(final Matcher<Integer> m) {229 return new BaseMatcher<String>() {230 @Override...
Source:MockUtils.java
...79 return intent.filterEquals((Intent) item);80 }81 @Override82 public void describeTo(Description description) {83 description.appendText(intent.toString());84 }85 };86 return MockitoHamcrest.argThat(m);87 }88 public static Bundle checkUserRestrictions(String... keys) {89 final Bundle expected = DpmTestUtils.newRestrictions(Preconditions.checkNotNull(keys));90 final Matcher<Bundle> m = new BaseMatcher<Bundle>() {91 @Override92 public boolean matches(Object item) {93 if (item == null) return false;94 return UserRestrictionsUtils.areEqual((Bundle) item, expected);95 }96 @Override97 public void describeTo(Description description) {98 description.appendText("User restrictions=" + getRestrictionsAsString(expected));99 }100 };101 return MockitoHamcrest.argThat(m);102 }103 private static String getRestrictionsAsString(Bundle b) {104 final StringBuilder sb = new StringBuilder();105 sb.append("[");106 if (b != null) {107 String sep = "";108 for (String key : b.keySet()) {109 sb.append(sep);110 sep = ",";111 sb.append(key);112 }113 }114 sb.append("]");115 return sb.toString();116 }117}...
Source:Matchers.java
...43 }4445 @Override46 public void describeTo(Description description) {47 description.appendText(currentTime.toString());48 }4950 @Override51 public void describeMismatch(Object item, Description description) {52 Date date = (Date) item;53 description54 .appendText(Long.toString(date.getTime()))55 .appendText(" (").appendText(Long.toString(abs(date.getTime() - currentTime)))56 .appendText(" ms)");57 }58 };59 }6061 public static org.hamcrest.Matcher<Long> equalToWithin(long expectedValue, long precision) {62 return new BaseMatcher<Long>() {6364 @Override65 public boolean matches(Object item) {66 Long value = (Long) item;67 long difference = value - expectedValue;68 return abs(difference) <= precision;69 }7071 @Override72 public void describeTo(Description description) {73 description.appendText(Long.toString(expectedValue));74 }7576 @Override77 public void describeMismatch(Object item, Description description) {78 Long value = (Long) item;79 description80 .appendText(Long.toString(value))81 .appendText(" (").appendText(Long.toString(abs(value - expectedValue)))82 .appendText(")");83 }84 };85 }8687 public static <T> org.hamcrest.Matcher<Observable<T>> hasOnlyOneItem() {88 return hasOnlyOneItem(null, item -> true);89 }9091 @SuppressWarnings("WeakerAccess")92 public static <T> org.hamcrest.Matcher<Observable<T>> hasOnlyOneItem(String descr, Func1<? super T, Boolean> predicate) {93 return new BaseMatcher<Observable<T>>() {94 @Override95 public boolean matches(Object item) {96 List<T> list = getList(item);97 System.out.println(list);98 return list.size() == 1;99 }100101 @Override102 public void describeTo(Description description) {103 description.appendText("only one item");104 if (descr != null)105 description.appendText(" ").appendText(descr);106 }107108 @Override109 public void describeMismatch(Object item, Description description) {110 List<T> list = getList(item);111 description.appendText(list.toString());112 }113114 private List<T> getList(Object item) {115 //noinspection unchecked116 Observable<T> observable = (Observable<T>) item;117 return observable.filter(predicate).toList().toBlocking().single();118 }119 };120 }121}
...
Source:PigeonholePrincipleTest.java
...48 public static class DivisibilityMather extends BaseMatcher<String>{49 private final BigInteger divisor;50 51 public DivisibilityMather(int divisor) {52 this.divisor = new BigInteger(Integer.toString(divisor));53 }54 55 public DivisibilityMather(Long expectedValue) {56 this.divisor = new BigInteger(Long.toString(expectedValue));57 }58 @Override59 public boolean matches(Object item) {60 BigInteger dividend = new BigInteger(item.toString());61 return dividend.mod(divisor) == BigInteger.ZERO;62 }63 @Override64 public void describeTo(Description description) {65 description.appendText("divisibility test");66 }67 68 @Override69 public void describeMismatch(Object item, Description description) {70 description.appendValue(item).appendText(" is not divisible by ").appendValue(divisor);71 }72 73 }74 75 public static final Matcher<String> hasZeroOrOne = new StringOfZeroOrOne();76 77 public static class StringOfZeroOrOne extends BaseMatcher<String>{78 @Override79 public boolean matches(Object item) {80 char[] chars = item.toString().toCharArray();81 for(char c: chars) {82 if(c != '0' && c != '1') return false;83 }84 return true;85 }86 @Override87 public void describeTo(Description description) {88 description.appendText("String of only zero or one");89 }90 91 @Override92 public void describeMismatch(Object item, Description description) {93 description.appendValue(item).appendText(" has digits other than 0 or 1");94 }...
Source:CustomMatchers.java
...70 protected T theExpected = expected;71 72 @Override73 public void describeTo(Description description) {74 description.appendText(theExpected.toString());75 }76 77 @Override78 public boolean matches(Object o) {79 return theExpected.equals(o);80 }81 };82 }83}...
Source:ResultMatchers.java
...37 */38 public static Matcher<Object> hasSingleFailureContaining(final String string) {39 return new BaseMatcher<Object>() {40 public boolean matches(Object item) {41 return item.toString().contains(string) && failureCountIs(1).matches(item);42 }43 public void describeTo(Description description) {44 description.appendText("has single failure containing " + string);45 }46 };47 }48 /**49 * Matches if the result has one or more failures, and at least one of them50 * contains {@code string}51 */52 public static Matcher<PrintableResult> hasFailureContaining(final String string) {53 return new BaseMatcher<PrintableResult>() {54 public boolean matches(Object item) {55 return item.toString().contains(string);56 }57 public void describeTo(Description description) {58 description.appendText("has failure containing " + string);59 }60 };61 }62}...
Source:AndMatcher.java
...65 description.appendList("(", " " + "and" + " ", ")", Arrays.asList(matchers));66 }67 68 /* (non-Javadoc)69 * @see org.hamcrest.BaseMatcher#toString()70 */71 @Override72 public String toString() {73 return "Matcher matching when all matchers match: " + Arrays.toString(matchers);74 }75}...
toString
Using AI Code Generation
1org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {2 public boolean matches(Object item) {3 return false;4 }5 public void describeTo(Description description) {6 description.appendText("Hello");7 }8};9org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {10 public boolean matches(Object item) {11 return false;12 }13 public void describeTo(Description description) {14 description.appendText("Hello");15 }16};17org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {18 public boolean matches(Object item) {19 return false;20 }21 public void describeTo(Description description) {22 description.appendText("Hello");23 }24};25org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {26 public boolean matches(Object item) {27 return false;28 }29 public void describeTo(Description description) {30 description.appendText("Hello");31 }32};33org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {34 public boolean matches(Object item) {35 return false;36 }37 public void describeTo(Description description) {38 description.appendText("Hello");39 }40};41org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {42 public boolean matches(Object item) {43 return false;44 }45 public void describeTo(Description description) {46 description.appendText("Hello");47 }48};49org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {50 public boolean matches(Object item) {51 return false;52 }53 public void describeTo(Description description) {54 description.appendText("Hello");55 }56};57org.hamcrest.BaseMatcher matcher = new org.hamcrest.BaseMatcher() {58 public boolean matches(Object
toString
Using AI Code Generation
1import org.hamcrest.BaseMatcher2import org.hamcrest.Description3import org.hamcrest.Matcher4class MyMatcher implements Matcher {5 boolean matches(Object item) {6 }7 void describeTo(Description description) {8 description.appendText("MyMatcher")9 }10}11def matcher = new MyMatcher()12assert matcher.toString() == 'MyMatcher'13import org.hamcrest.TypeSafeMatcher14import org.hamcrest.Description15class MyTypeSafeMatcher extends TypeSafeMatcher {16 boolean matchesSafely(Object item) {17 }18 void describeTo(Description description) {19 description.appendText("MyTypeSafeMatcher")20 }21}22def typeSafeMatcher = new MyTypeSafeMatcher()23assert typeSafeMatcher.toString() == 'MyTypeSafeMatcher'24import org.hamcrest.CustomMatcher25import org.hamcrest.Description26def customMatcher = new CustomMatcher('MyCustomMatcher') {27 boolean matches(Object item) {28 }29}30assert customMatcher.toString() == 'MyCustomMatcher'31import org.hamcrest.SelfDescribing32import org.hamcrest.StringDescription33def selfDescribing = new SelfDescribing() {34 void describeTo(Description description) {35 description.appendText("MySelfDescribing")36 }37}38assert selfDescribing.toString() == 'MySelfDescribing'39import org.hamcrest.SelfDescribingValue40def selfDescribingValue = new SelfDescribingValue("MySelfDescribingValue")41assert selfDescribingValue.toString() == 'MySelfDescribingValue'42import org.hamcrest.StringDescription43def stringDescription = new StringDescription()44stringDescription.appendText("MyStringDescription")45assert stringDescription.toString() == 'MyStringDescription'46import org.hamcrest.StringDescription47def stringDescription = new StringDescription()48stringDescription.appendText("MyStringDescription")49assert stringDescription.toString() == 'MyStringDescription'50import org
toString
Using AI Code Generation
1import org.hamcrest.BaseMatcher2import org.hamcrest.Description3import org.hamcrest.Matcher4import org.hamcrest.MatcherAssert5import org.hamcrest.Matchers6import org.hamcrest.TypeSafeMatcher7import org.junit.Test8import org.junit.runner.RunWith9import org.junit.runners.Parameterized10import org.junit.runners.Parameterized.Parameters11class HamcrestMatchersTest {12 fun testHamcrestMatchers() {13 MatcherAssert.assertThat("Hello", Matchers.equalTo("Hello"))14 MatcherAssert.assertThat("Hello", Matchers.not(Matchers.equalTo("World")))15 MatcherAssert.assertThat("Hello", Matchers.anyOf(Matchers.equalTo("World"), Matchers.equalTo("Hello")))16 MatcherAssert.assertThat("Hello", Matchers.allOf(Matchers.equalTo("World"), Matchers.equalTo("Hello")))17 }18 fun testCustomMatcher() {19 MatcherAssert.assertThat("Hello", object : BaseMatcher<String>() {20 override fun describeTo(description: Description?) {21 description?.appendText("Hello World")22 }23 override fun matches(item: Any?): Boolean {24 }25 })26 }27 fun testCustomTypeSafeMatcher() {28 MatcherAssert.assertThat("Hello", object : TypeSafeMatcher<String>() {29 override fun describeTo(description: Description?) {30 description?.appendText("Hello World")31 }32 override fun matchesSafely(item: String?): Boolean {33 }34 })35 }36 @RunWith(Parameterized::class)37 class HamcrestMatchersTestWithParameters(private val input: String, private val matcher: Matcher<String>) {38 companion object {39 fun data(): Collection<Array<out Any>> {40 return listOf(41 arrayOf("Hello", Matchers.equalTo("Hello")),42 arrayOf("Hello", Matchers.not(Matchers.equalTo("World"))),43 arrayOf("Hello", Matchers.anyOf(Matchers.equalTo("World"), Matchers.equalTo("Hello"))),44 arrayOf("Hello", Matchers.allOf(Matchers.equalTo("World"), Matchers.equalTo("Hello")))45 }46 }47 fun testHamcrestMatchers() {48 MatcherAssert.assertThat(input, matcher)49 }50 }51}52 at org.junit.Assert.assertEquals(Assert.java:115)53 at org.junit.Assert.assertEquals(Assert.java:144
toString
Using AI Code Generation
1import org.hamcrest.BaseMatcher2import org.hamcrest.Description3import org.hamcrest.Matcher4import org.hamcrest.StringDescription5def matcher = new BaseMatcher() {6 boolean matches(Object item) {7 }8 void describeTo(Description description) {9 description.appendText('Hello')10 }11}12StringDescription description = new StringDescription()13description.appendDescriptionOf(matcher)14assert description.toString() == 'Hello'15import org.hamcrest.BaseMatcher16import org.hamcrest.Description17import org.hamcrest.Matcher18import org.hamcrest.StringDescription19def matcher = new BaseMatcher() {20 boolean matches(Object item) {21 }22 void describeTo(Description description) {23 description.appendText('Hello')24 }25}26StringDescription description = new StringDescription()27description.appendDescriptionOf(matcher)28assert description.toString() == 'Hello'29import org.hamcrest.BaseMatcher30import org.hamcrest.Description31import org.hamcrest.Matcher32import org.hamcrest.StringDescription33def matcher = new BaseMatcher() {34 boolean matches(Object item) {35 }36 void describeTo(Description description) {37 description.appendText('Hello')38 }39}40StringDescription description = new StringDescription()41description.appendDescriptionOf(matcher)42assert description.toString() == 'Hello'43import org.hamcrest.BaseMatcher44import org.hamcrest.Description45import org.hamcrest.Matcher46import org.hamcrest.StringDescription47def matcher = new BaseMatcher() {48 boolean matches(Object item) {49 }50 void describeTo(Description description) {51 description.appendText('Hello')52 }53}54StringDescription description = new StringDescription()55description.appendDescriptionOf(matcher)56assert description.toString() == 'Hello'57import org.hamcrest.BaseMatcher58import org.hamcrest.Description59import org.hamcrest.Matcher60import
toString
Using AI Code Generation
1public class CustomMatcher<T> extends BaseMatcher<T> {2 private final String description;3 private final Matcher<T> matcher;4 public CustomMatcher(String description, Matcher<T> matcher) {5 this.description = description;6 this.matcher = matcher;7 }8 public boolean matches(Object item) {9 return matcher.matches(item);10 }11 public void describeTo(Description description) {12 matcher.describeTo(description);13 }14 public String toString() {15 return description;16 }17}18public class CustomMatcherTest {19 public void testCustomMatcher() {20 assertThat("Hello World", new CustomMatcher<>("startsWith(\"Hello\")", startsWith("Hello")));21 }22}
toString
Using AI Code Generation
1import org.hamcrest.BaseMatcher;2import org.hamcrest.Description;3import org.hamcrest.Matcher;4import org.hamcrest.StringDescription;5import org.hamcrest.core.IsNot;6public class MatcherToString {7 public static void main(String[] args) {8 Matcher<String> matcher = new IsNot<String>(new BaseMatcher<String>() {9 public boolean matches(Object item) {10 return false;11 }12 public void describeTo(Description description) {13 description.appendText("anything but a");14 }15 });16 System.out.println(matcher.toString());17 System.out.println(StringDescription.toString(matcher));18 }19}
toString
Using AI Code Generation
1public class CustomMatcher<T> extends BaseMatcher<T> {2 private final String description;3 private final Matcher<T> matcher;4 public CustomMatcher(String description, Matcher<T> matcher) {5 this.description = description;6 this.matcher = matcher;7 }8 public boolean matches(Object item) {9 return matcher.matches(item);10 }11 public void describeTo(Description description) {12 matcher.describeTo(description);13 }14 public String toString() {15 return description;16 }17}18public class CustomMatcherTest {19 public void testCustomMatcher() {20 assertThat("Hello World", new CustomMatcher<>("startsWith(\"Hello\")", startsWith("Hello")));21 }22}
toString
Using AI Code Generation
1import org.hamcrest.BaseMatcher;2import org.hamcrest.Description;3import org.hamcrest.Matcher;4import org.hamcrest.StringDescription;5import org.hamcrest.core.IsNot;6public class MatcherToString {7 public static void main(String[] args) {8 Matcher<String> matcher = new IsNot<String>(new BaseMatcher<String>() {9 public boolean matches(Object item) {10 return false;11 }12 public void describeTo(Description description) {13 description.appendText("anything but a");14 }15 });16 System.out.println(matcher.toString());17 System.out.println(StringDescription.toString(matcher));18 }19}
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