@Test
public void testConstant() {
Field a = Data.makeConstantField("a", "b", "foo", 50);
assertEquals("a", a.name);
assertEquals("b", a.label);
assertEquals(50, a.rowCount());
assertEquals(50, a.getNumericProperty("valid"), 0.001);
assertEquals(0, a.getNumericProperty("validNumeric"), 0.001);
assertEquals(1, a.getNumericProperty("unique"), 0.001);
assertEquals("foo", a.value(2));
assertEquals(false, a.hasProperty("numeric"));
}
@Test
public void testIndexing() {
Field a = Data.makeIndexingField("a", "b", 30);
assertEquals("a", a.name);
assertEquals("b", a.label);
assertEquals(30, a.rowCount());
assertEquals(30, a.getNumericProperty("valid"), 0.001);
assertEquals(30, a.getNumericProperty("validNumeric"), 0.001);
assertEquals(30, a.getNumericProperty("unique"), 0.001);
assertEquals(15.5, a.getNumericProperty("mean"), 0.001);
assertEquals(3, a.value(2));
assertEquals(8, a.value(7));
assertEquals(true, a.hasProperty("numeric"));
}
@Test
public void testPermute() {
Field base = Data.makeIndexingField("a", "b", 10);
Field a = Data.permute(base, new int[] {0, 0, 0, 1, 1, 2, 2, 3}, false);
assertEquals(true, a.hasProperty("numeric"));
assertEquals("a", a.name);
assertEquals("b", a.label);
assertEquals(8, a.rowCount());
assertEquals(8, a.getNumericProperty("valid"), 0.001);
assertEquals(8, a.getNumericProperty("validNumeric"), 0.001);
assertEquals(4, a.getNumericProperty("unique"), 0.001);
assertEquals((1 + 1 + 1 + 2 + 2 + 3 + 3 + 4) / 8.0, a.getNumericProperty("mean"), 0.001);
assertEquals(1, a.value(1));
assertEquals(1, a.value(2));
assertEquals(4, a.value(7));
assertEquals("1, 2, 3, 4", Data.join(a.categories()));
}