35 lines
1.3 KiB
JavaScript
35 lines
1.3 KiB
JavaScript
import assert from 'assert'
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import math from '../../src/pocomath.mjs'
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describe('polynomialRoot', () => {
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it('should solve a linear equation with real coefficients', function () {
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assert.deepEqual(math.polynomialRoot(6, 3), math.tuple(-2))
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assert.deepEqual(
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math.polynomialRoot(math.complex(-3, 2), 2),
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math.tuple(math.complex(1.5, -1)))
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assert.deepEqual(
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math.polynomialRoot(math.complex(3, 1), math.complex(-1, -1)),
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math.tuple(math.complex(2, -1)))
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})
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// Should be safe now to capture the functions:
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const complex = math.complex
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const pRoot = math.polynomialRoot
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const tup = math.tuple
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it('should solve a quadratic equation with a double root', function () {
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assert.deepEqual(pRoot(4, 4, 1), tup(-2))
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assert.deepEqual(
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pRoot(complex(0, 2), complex(2, 2), 1), tup(complex(-1, -1)))
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})
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it('should solve a quadratic with two distinct roots', function () {
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assert.deepEqual(pRoot(-3, 2, 1), tup(1, -3))
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assert.deepEqual(pRoot(-2, 0, 1), tup(math.sqrt(2), -math.sqrt(2)))
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assert.deepEqual(
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pRoot(4, 2, 1),
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tup(complex(-1, math.sqrt(3)), complex(-1, -math.sqrt(3))))
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assert.deepEqual(
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pRoot(complex(3, 1), -3, 1), tup(complex(1, 1), complex(2, -1)))
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})
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})
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