squiggle/packages/squiggle-lang/__tests__/JS__Test.ts
2022-04-09 21:56:05 -04:00

88 lines
2.6 KiB
TypeScript

import { run, GenericDist, resultMap, makeSampleSetDist } from "../src/js/index";
let testRun = (x: string) => {
let result = run(x);
if (result.tag == "Ok") {
return { tag: "Ok", value: result.value.exports };
} else {
return result;
}
};
describe("Simple calculations and results", () => {
test("mean(normal(5,2))", () => {
expect(testRun("mean(normal(5,2))")).toEqual({
tag: "Ok",
value: [{ NAME: "Float", VAL: 5 }],
});
});
test("10+10", () => {
let foo = testRun("10 + 10");
expect(foo).toEqual({ tag: "Ok", value: [{ NAME: "Float", VAL: 20 }] });
});
});
describe("Log function", () => {
test("log(1) = 0", () => {
let foo = testRun("log(1)");
expect(foo).toEqual({ tag: "Ok", value: [{ NAME: "Float", VAL: 0 }] });
});
});
describe("Multimodal too many weights error", () => {
test("mm(0,0,[0,0,0])", () => {
let foo = testRun("mm(0,0,[0,0,0])");
expect(foo).toEqual({
tag: "Error",
value: "Function multimodal error: Too many weights provided",
});
});
});
describe("GenericDist", () => {
//It's important that sampleCount is less than 9. If it's more, than that will create randomness
//Also, note, the value should be created using makeSampleSetDist() later on.
let env = { sampleCount: 8, xyPointLength: 100 };
let dist = new GenericDist(
{ tag: "SampleSet", value: [3, 4, 5, 6, 6, 7, 10, 15, 30] },
env
);
let dist2 = new GenericDist(
{ tag: "SampleSet", value: [20, 22, 24, 29, 30, 35, 38, 44, 52] },
env
);
test("mean", () => {
expect(dist.mean().value).toBeCloseTo(3.737);
});
test("pdf", () => {
expect(dist.pdf(5.0).value).toBeCloseTo(0.0431);
});
test("cdf", () => {
expect(dist.cdf(5.0).value).toBeCloseTo(0.155);
});
test("inv", () => {
expect(dist.inv(0.5).value).toBeCloseTo(9.458);
});
test("toPointSet", () => {
expect(
resultMap(dist.toPointSet(), (r: GenericDist) => r.toString()).value.value
).toBe("Point Set Distribution");
});
test("toSparkline", () => {
expect(dist.toSparkline(20).value).toBe("▁▁▃▅███▆▄▃▂▁▁▂▂▃▂▁▁▁");
});
test("algebraicAdd", () => {
expect(
resultMap(dist.algebraicAdd(dist2), (r: GenericDist) => r.toSparkline(20))
.value.value
).toBe("▁▁▂▄▆████▇▆▄▄▃▃▃▂▁▁▁");
});
test("pointwiseAdd", () => {
expect(
resultMap(dist.pointwiseAdd(dist2), (r: GenericDist) => r.toSparkline(20))
.value.value
).toBe("▁▂▅██▅▅▅▆▇█▆▅▃▃▂▂▁▁▁");
});
});