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jedi.assertion.Assert Maven / Gradle / Ivy
package jedi.assertion;
import static jedi.functional.Coercions.asList;
import java.util.Collection;
/**
* A class of Asserts.
* The business of throwing an exception from this class is delegated to {@link AssertionDelegate}.
* {@link ErrorThrowingAssertionDelegate} is the default {@link AssertionDelegate} that throws an
* {@link AssertionError}
*/
public class Assert {
private static AssertionDelegate delegate = new ErrorThrowingAssertionDelegate();
public static void setDelegate(AssertionDelegate delegate) {
Assert.delegate = delegate;
}
protected Assert() {
}
public static void assertSame(Object value1, Object value2, String assertionName) {
assertTrue(value1 == value2, assertionName, value1, value2);
}
public static void assertEqual(Object value1, Object value2, String assertionName) {
assertNotNull(value1, assertionName + ".value1");
assertNotNull(value2, assertionName + ".value2");
assertTrue(value1.equals(value2), assertionName, value1, value2);
}
public static Object assertOneOf(Object[] values, Object value, String assertionName) {
assertNotNull(values, assertionName + ".values");
assertNotNull(value, assertionName + ".value");
Collection valuesAsList = asList(values);
assertTrue(valuesAsList.contains(value), assertionName, valuesAsList, value);
return value;
}
public static void assertTrue(boolean value, String assertionName, Object... context) {
delegate.assertTrue(value, assertionName, context);
}
public static T assertNull(T obj, String assertionName) {
assertTrue(obj == null, assertionName, obj);
return obj;
}
public static T assertNotNull(T obj, String assertionName, Object... context) {
assertTrue(obj != null, assertionName, context);
return obj;
}
public static String assertNotNullOrEmpty(String string, String assertionName) {
assertTrue(null != string && string.length() > 0, assertionName);
return string;
}
public static Collection assertNotNullOrEmpty(Collection collection, String assertionName) {
assertTrue(null != collection && collection.size() > 0, assertionName);
return collection;
}
public static Object[] assertNotNullOrEmpty(Object[] array, String assertionName) {
assertTrue(null != array && array.length > 0, assertionName);
return array;
}
public static > T assertGreaterThanOrEqualTo(T min, T value, String assertionName) {
assertTrue(value.compareTo(min) >= 0, assertionName, min, value);
return value;
}
public static > T assertLessThanOrEqualTo(T max, T value, String assertionName) {
assertTrue(value.compareTo(max) <= 0, assertionName, max, value);
return value;
}
public static > T assertWithinClosedRange(T min, T max, T value, String assertionName) {
assertGreaterThanOrEqualTo(min, value, assertionName);
assertLessThanOrEqualTo(max, value, assertionName);
return value;
}
public static Object fail(String assertionName, Object... context) {
assertTrue(false, assertionName, context);
return null; // to prevent spurious return statements
}
public static void assertFalse(boolean value, String assertionName) {
assertTrue(!value, assertionName);
}
}
