@Test
public void listen() {
SineString ss440 = new SineString(440.0);
ss440.pluck();
for (int i = 0; i < 40000; i++) {
StdAudio.play(ss440.sample());
ss440.tic();
}
}
@Test
public void constructorTest() {
SineString ss220 = new SineString(220.0);
assertEquals(0.0, ss220.sample(), 0.0001);
try {
SineString ssBad = new SineString(-220.0);
fail("SineString constructor accepted bad parameter (-220.0).");
} catch (IllegalArgumentException e) {
assertTrue(true); // Correct exception type thrown.
} catch (Exception e) {
fail("SineString constructor threw incorrect exception type: " + e);
}
}
@Test
public void pluckTest() {
SineString ss440 = new SineString(440.0);
assertEquals(0.0, ss440.sample(), 0.0001);
ss440.pluck();
double sample1 = ss440.sample();
ss440.tic();
double sample2 = ss440.sample();
ss440.tic();
double sample3 = ss440.sample();
assertFalse(Math.abs(sample1 - sample2) < 0.000001);
assertFalse(Math.abs(sample1 - sample3) < 0.000001);
assertFalse(Math.abs(sample2 - sample3) < 0.000001);
}
@Test
public void ticTest() {
SineString ss440 = new SineString(440.0);
assertEquals(0, ss440.time());
ss440.tic();
assertEquals(1, ss440.time());
for (int i = 0; i < 100; i++) ss440.tic();
assertEquals(101, ss440.time());
}