import math // Tests are based on and verified from practice examples of Khan Academy // https://www.khanacademy.org/math/precalculus/imaginary-and-complex-numbers fn test_complex_addition() { mut c1 := math.complex(0,-10) mut c2 := math.complex(-40,8) mut result := c1 + c2 assert result.equals(math.complex(-40,-2)) c1 = math.complex(-71,2) c2 = math.complex(88,-12) result = c1 + c2 assert result.equals(math.complex(17,-10)) c1 = math.complex(0,-30) c2 = math.complex(52,-30) result = c1 + c2 assert result.equals(math.complex(52,-60)) c1 = math.complex(12,-9) c2 = math.complex(32,-6) result = c1 + c2 assert result.equals(math.complex(44,-15)) } fn test_complex_subtraction() { mut c1 := math.complex(-8,0) mut c2 := math.complex(6,30) mut result := c1 - c2 assert result.equals(math.complex(-14,-30)) c1 = math.complex(-19,7) c2 = math.complex(29,32) result = c1 - c2 assert result.equals(math.complex(-48,-25)) c1 = math.complex(12,0) c2 = math.complex(23,13) result = c1 - c2 assert result.equals(math.complex(-11,-13)) c1 = math.complex(-14,3) c2 = math.complex(0,14) result = c1 - c2 assert result.equals(math.complex(-14,-11)) } fn test_complex_multiplication() { mut c1 := math.complex(1,2) mut c2 := math.complex(1,-4) mut result := c1.multiply(c2) assert result.equals(math.complex(9,-2)) c1 = math.complex(-4,-4) c2 = math.complex(-5,-3) result = c1.multiply(c2) assert result.equals(math.complex(8,32)) c1 = math.complex(4,4) c2 = math.complex(-2,-5) result = c1.multiply(c2) assert result.equals(math.complex(12,-28)) c1 = math.complex(2,-2) c2 = math.complex(4,-4) result = c1.multiply(c2) assert result.equals(math.complex(0,-16)) } fn test_complex_division() { mut c1 := math.complex(-9,-6) mut c2 := math.complex(-3,-2) mut result := c1.divide(c2) assert result.equals(math.complex(3,0)) c1 = math.complex(-23,11) c2 = math.complex(5,1) result = c1.divide(c2) assert result.equals(math.complex(-4,3)) c1 = math.complex(8,-2) c2 = math.complex(-4,1) result = c1.divide(c2) assert result.equals(math.complex(-2,0)) c1 = math.complex(11,24) c2 = math.complex(-4,-1) result = c1.divide(c2) assert result.equals(math.complex(-4,-5)) } fn test_complex_conjugate() { mut c1 := math.complex(0,8) mut result := c1.conjugate() assert result.equals(math.complex(0,-8)) c1 = math.complex(7,3) result = c1.conjugate() assert result.equals(math.complex(7,-3)) c1 = math.complex(2,2) result = c1.conjugate() assert result.equals(math.complex(2,-2)) c1 = math.complex(7,0) result = c1.conjugate() assert result.equals(math.complex(7,0)) } fn test_complex_equals() { mut c1 := math.complex(0,8) mut c2 := math.complex(0,8) assert c1.equals(c2) c1 = math.complex(-3,19) c2 = math.complex(-3,19) assert c1.equals(c2) }