def test_can_specify_amplitude(self):
gen = CosineWaveGenerator(2, 1)
self.assertAlmostEquals(gen.generate(0.0), 2)
self.assertAlmostEquals(gen.generate(0.25), 0)
self.assertAlmostEquals(gen.generate(0.5), -2)
self.assertAlmostEquals(gen.generate(0.75), 0)
self.assertAlmostEquals(gen.generate(1.0), 2)
def test_can_specify_amplitude(self):
gen = CosineWaveGenerator(2, 1)
self.assertAlmostEquals(gen.generate(0.0), 2)
self.assertAlmostEquals(gen.generate(0.25), 0)
self.assertAlmostEquals(gen.generate(0.5), -2)
self.assertAlmostEquals(gen.generate(0.75), 0)
self.assertAlmostEquals(gen.generate(1.0), 2)
def test_can_specify_frequency(self):
gen = CosineWaveGenerator(1, 2)
self.assertAlmostEquals(gen.generate(0.0), 1)
self.assertAlmostEquals(gen.generate(0.125), 0)
self.assertAlmostEquals(gen.generate(0.25), -1)
self.assertAlmostEquals(gen.generate(0.375), 0)
self.assertAlmostEquals(gen.generate(0.5), 1)
self.assertAlmostEquals(gen.generate(0.625), 0)
self.assertAlmostEquals(gen.generate(0.75), -1)
self.assertAlmostEquals(gen.generate(0.875), 0)
self.assertAlmostEquals(gen.generate(1.0), 1)
def test_can_specify_frequency(self):
gen = CosineWaveGenerator(1, 2)
self.assertAlmostEquals(gen.generate(0.0), 1)
self.assertAlmostEquals(gen.generate(0.125), 0)
self.assertAlmostEquals(gen.generate(0.25), -1)
self.assertAlmostEquals(gen.generate(0.375), 0)
self.assertAlmostEquals(gen.generate(0.5), 1)
self.assertAlmostEquals(gen.generate(0.625), 0)
self.assertAlmostEquals(gen.generate(0.75), -1)
self.assertAlmostEquals(gen.generate(0.875), 0)
self.assertAlmostEquals(gen.generate(1.0), 1)