/** Test of setAlpha method, of class LatentDirichletAllocationVectorGibbsSampler. */
@Test
public void testSetAlpha() {
double alpha = LatentDirichletAllocationVectorGibbsSampler.DEFAULT_ALPHA;
LatentDirichletAllocationVectorGibbsSampler instance =
new LatentDirichletAllocationVectorGibbsSampler();
assertEquals(alpha, instance.getAlpha(), 0.0);
alpha = 1.1;
instance.setAlpha(alpha);
assertEquals(alpha, instance.getAlpha(), 0.0);
boolean exceptionThrown = false;
try {
instance.setAlpha(0.0);
} catch (IllegalArgumentException e) {
exceptionThrown = true;
} finally {
assertTrue(exceptionThrown);
}
assertEquals(alpha, instance.getAlpha(), 0.0);
exceptionThrown = false;
try {
instance.setAlpha(-0.1);
} catch (IllegalArgumentException e) {
exceptionThrown = true;
} finally {
assertTrue(exceptionThrown);
}
assertEquals(alpha, instance.getAlpha(), 0.0);
}
