Adds tests

This commit is contained in:
Roman Galochkin 2020-02-25 10:01:40 +03:00
parent 43ef31e772
commit d3bc12ddd0
3 changed files with 48 additions and 2 deletions

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@ -0,0 +1,44 @@
open Jest;
open Expect;
exception ShapeWrong(string);
describe("Functions", () => {
test("interpolate", () => {
let a = Functions.interpolate(10., 20., 1., 2., 15.);
let b = 1.5;
expect(a) |> toEqual(b);
});
test("range#1", () => {
expect(Functions.range(1., 5., 3)) |> toEqual([|1., 3., 5.|])
});
test("range#2", () => {
expect(Functions.range(1., 5., 5)) |> toEqual([|1., 2., 3., 4., 5.|])
});
test("range#3", () => {
expect(Functions.range(-10., 15., 2)) |> toEqual([|(-10.), 15.|])
});
test("range#4", () => {
expect(Functions.range(-10., 15., 3)) |> toEqual([|(-10.), 2.5, 15.|])
});
test("range#5", () => {
expect(Functions.range(-10.3, 17., 3))
|> toEqual([|(-10.3), 3.3499999999999996, 17.|])
});
test("range#6", () => {
expect(Functions.range(-10.3, 17., 5))
|> toEqual([|
(-10.3),
(-3.4750000000000005),
3.3499999999999996,
10.175,
17.0,
|])
});
test("range#7", () => {
expect(Functions.range(-10.3, 17.31, 3))
|> toEqual([|(-10.3), 3.504999999999999, 17.31|])
});
test("range#8", () => {
expect(Functions.range(1., 1., 3)) |> toEqual([|1., 1., 1.|])
});
});

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@ -24,7 +24,8 @@ let range = (min: float, max: float, n: int): array(float) => {
| _ when n < 0 => raise(RangeWrong("n is less then zero"))
| _ when min > max => raise(RangeWrong("Min values is less then max"))
| _ =>
let diff = max -. min;
Belt.Array.makeBy(n, i => float_of_int(i) *. diff);
let diff = (max -. min) /. Belt.Float.fromInt(n - 1);
Belt.Array.makeBy(n, i => {min +. Belt.Float.fromInt(i) *. diff});
};
};
let random = Js.Math.random_int;

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@ -100,6 +100,7 @@ function max(arr) {
}
/**
* @Done
* @param {number} min
* @param {number} max
* @return {number}