protected void verifyComparableToDifferent(T o1, T o2) {
assertNotNull(o1);
assertNotNull(o2);
int result = o1.compareTo(o2);
checkForMinMaxInt(result);
assertTrue(0 != signum(result));
}
protected void verifyComparableToEquivalent(T o1, T o2) {
assertNotNull(o1);
assertNotNull(o2);
int expected = 0;
int result = o1.compareTo(o2);
assertEquals(expected, signum(result));
}
protected void verifyComparableToSelf(T obj) {
assertNotNull(obj);
int expected = 0;
int result = obj.compareTo(obj);
checkForMinMaxInt(result);
assertEquals(expected, signum(result));
}
protected void verifyComparableToNull(T obj) {
assertNotNull(obj);
try {
obj.compareTo(null);
String msg = "Expected NullPointerException was NOT thrown.";
assertTrue(msg, false);
} catch (NullPointerException ex) {
// this is what the spec requires, so ignore the exception.
assertNotNull(ex);
}
}
protected void verifyTransitiveComparison(T x, T y, T z) {
assertNotNull(x);
assertNotNull(y);
assertNotNull(z);
int x_y = x.compareTo(y);
int y_z = y.compareTo(z);
int x_z = x.compareTo(z);
checkForMinMaxInt(x_y);
checkForMinMaxInt(y_z);
checkForMinMaxInt(x_z);
if ((x_y > 0) && (y_z > 0)) {
assertTrue(x_z > 0);
} else if ((x_y < 0) && (y_z < 0)) {
assertTrue(x_z < 0);
} else {
String msg =
"Comparison of "
+ x.toString()
+ ", "
+ y.toString()
+ " and "
+ z.toString()
+ " is NOT Transitive. "
+ "Y must be 'between' X and Z.";
assertTrue(msg, false);
}
}
protected void verifyComparableToVsEquals(T o1, T o2) {
assertNotNull(o1);
assertNotNull(o2);
assertTrue((o1.compareTo(o2) == 0) == (o1.equals(o2)));
assertTrue((o2.compareTo(o1) == 0) == (o2.equals(o1)));
assertTrue((o1.compareTo(o2) == 0) == (o2.compareTo(o1) == 0));
}