@Test
public void sumOfSmallSequence() {
Statistician s = new Statistician();
s.nextNumber(1.1);
assertEquals(1.1, s.getSum(), 0.0001);
}
@Test
public void lengthOfSequence() {
Statistician s = new Statistician();
s.nextNumber(1.1);
assertEquals(1, s.getLengthOfSequence());
}
@Test
public void meanOfLargerSequence() {
Statistician s = new Statistician();
s.nextNumber(2.0);
s.nextNumber(2.0);
s.nextNumber(2.0);
assertEquals(2.0, s.getMean(), 0.0001);
}
@Test
public void sumOfLargerSequence() {
Statistician s = new Statistician();
s.nextNumber(1.1);
s.nextNumber(5.1);
s.nextNumber(5.0);
assertEquals(11.2, s.getSum(), 0.0001);
}
@Test
public void lastNumberOfLargerSequence() {
Statistician s = new Statistician();
s.nextNumber(1.1);
s.nextNumber(5.1);
s.nextNumber(5.0);
assertEquals(5.0, s.getLastNumberOfSequence(), 0.0001);
}
@Test
public void lengthOfSequenceMoreThanOne() {
Statistician s = new Statistician();
s.nextNumber(1.1);
s.nextNumber(5.1);
s.nextNumber(5.0);
assertEquals(3, s.getLengthOfSequence());
}
@Test
public void maxOfLargerSequence() {
Statistician s = new Statistician();
s.nextNumber(1.1);
s.nextNumber(1.0);
s.nextNumber(12.0);
s.nextNumber(211.0);
assertEquals(211.0, s.getMax(), 0.0001);
}
@Test
public void lastNumberOfAnEmptySequence() {
Statistician s = new Statistician();
assertEquals(Double.NaN, s.getLastNumberOfSequence(), 0.0001);
}
@Test
public void meanOfAnEmptySequence() {
Statistician s = new Statistician();
assertEquals(Double.NaN, s.getMean(), 0.0001);
}