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feat: Add a couple of ways to install generics safely. (#18)

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Resolves #10.

Co-authored-by: Glen Whitney <glen@studioinfinity.org>
Reviewed-on: #18
This commit is contained in:
Glen Whitney 2022-07-23 02:41:59 +00:00
parent 2a60cc0989
commit 4fdafc751e
3 changed files with 64 additions and 1 deletions
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23
test/custom.mjs
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@ -6,6 +6,9 @@ import * as numberAdd from '../src/number/add.mjs'
import * as complex from '../src/complex/all.mjs'
import * as complexAdd from '../src/complex/add.mjs'
import * as complexNegate from '../src/complex/negate.mjs'
import * as complexComplex from '../src/complex/complex.mjs'
import * as concreteSubtract from '../src/generic/subtract.concrete.mjs'
import * as genericSubtract from '../src/generic/subtract.mjs'
import extendToComplex from '../src/complex/extendToComplex.mjs'
const bw = new PocomathInstance('backwards')
@ -55,4 +58,24 @@ describe('A custom instance', () => {
assert.strictEqual('subtract' in cherry, false)
assert.strictEqual('negate' in cherry, false)
})
it("can use bundles that are closed under dependency", () => {
const ok = new PocomathInstance('concrete')
ok.install(concreteSubtract)
assert.strictEqual(ok.subtract(7, 5), 2)
})
it("can load generics and then import their dependences", async function () {
const chase = new PocomathInstance('Chase Dependencies')
chase.install(genericSubtract)
chase.install(complexComplex) // for convenience to build complex numbers
await chase.importDependencies(['bigint', 'complex'])
/* Now we have an instance that supports subtraction for Gaussian
integers.
*/
assert.deepStrictEqual(
chase.subtract(chase.complex(3n, 2n), chase.complex(2n, 5n)),
math.complex(1n, -3n))
})
})