glen/picomath
1
0
Fork 0
Code Issues Pull requests Projects Releases Wiki Activity

feat: Selective loader that extends all/only existing number methods to complex

Browse source 
Plus a test example where an instance is initialized to have only addition,
  and then that instance is extended to complex numbers, at which point it
  has number and complex addition but not negation or subtraction (at all).
This commit is contained in:
Glen Whitney 2022-03-25 02:46:49 -07:00
parent 29653f25c4
commit e5ec1083e3
3 changed files with 47 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

22
test/custom.js
View file

@ -1,14 +1,17 @@
import assert from 'assert'
import math from '../picomath.js'
import picoInstance from '../picomathInstance.js'
import createNumber from '../number/all.js'
import createNumbers from '../number/all.js'
import createNumber from '../number/number.js'
import createAdd from '../number/add.js'
import createComplex from '../complex/all.js'
import extendByComplex from '../complex/extendByComplex.js'
describe('Custom instances', () => {
it("doesn't matter what order you assemble", () => {
const bw = picoInstance('backwards')
createComplex(bw)
createNumber(bw)
createNumbers(bw)
assert.strictEqual(bw.subtract(16, bw.add(3,4,2)), 7)
assert.strictEqual(bw.negate(bw.number('8')), -8)
@ -18,4 +21,19 @@ describe('Custom instances', () => {
math.complex(11, -4)) // note both instances coexist
assert.deepStrictEqual(bw.negate(math.complex(3, '8')).im, -8)
})
it("can selectively import in cute ways", async function () {
const cherry = picoInstance('cherry')
createNumber(cherry)
createAdd(cherry)
await extendByComplex(cherry)
// Now we have an instance that supports addition for number and complex
// and little else:
assert.strictEqual(cherry.add(3, 4, 2), 9)
assert.deepStrictEqual(
cherry.add(cherry.complex(3, 3), 4, cherry.complex(2, 2)),
math.complex(9,5))
assert.strictEqual('subtract' in cherry, false)
assert.strictEqual('negate' in cherry, false)
})
})