Adds tests
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__tests__/Functions__Test.re
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44
__tests__/Functions__Test.re
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@ -0,0 +1,44 @@
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open Jest;
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open Expect;
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exception ShapeWrong(string);
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describe("Functions", () => {
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test("interpolate", () => {
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let a = Functions.interpolate(10., 20., 1., 2., 15.);
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let b = 1.5;
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expect(a) |> toEqual(b);
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});
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test("range#1", () => {
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expect(Functions.range(1., 5., 3)) |> toEqual([|1., 3., 5.|])
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});
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test("range#2", () => {
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expect(Functions.range(1., 5., 5)) |> toEqual([|1., 2., 3., 4., 5.|])
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});
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test("range#3", () => {
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expect(Functions.range(-10., 15., 2)) |> toEqual([|(-10.), 15.|])
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});
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test("range#4", () => {
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expect(Functions.range(-10., 15., 3)) |> toEqual([|(-10.), 2.5, 15.|])
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});
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test("range#5", () => {
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expect(Functions.range(-10.3, 17., 3))
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|> toEqual([|(-10.3), 3.3499999999999996, 17.|])
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});
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test("range#6", () => {
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expect(Functions.range(-10.3, 17., 5))
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|> toEqual([|
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(-10.3),
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(-3.4750000000000005),
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3.3499999999999996,
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10.175,
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17.0,
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|])
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});
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test("range#7", () => {
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expect(Functions.range(-10.3, 17.31, 3))
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|> toEqual([|(-10.3), 3.504999999999999, 17.31|])
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});
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test("range#8", () => {
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expect(Functions.range(1., 1., 3)) |> toEqual([|1., 1., 1.|])
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});
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});
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@ -24,7 +24,8 @@ let range = (min: float, max: float, n: int): array(float) => {
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| _ when n < 0 => raise(RangeWrong("n is less then zero"))
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| _ when min > max => raise(RangeWrong("Min values is less then max"))
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| _ =>
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let diff = max -. min;
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Belt.Array.makeBy(n, i => float_of_int(i) *. diff);
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let diff = (max -. min) /. Belt.Float.fromInt(n - 1);
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Belt.Array.makeBy(n, i => {min +. Belt.Float.fromInt(i) *. diff});
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};
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};
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let random = Js.Math.random_int;
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@ -100,6 +100,7 @@ function max(arr) {
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}
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/**
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* @Done
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* @param {number} min
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* @param {number} max
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* @return {number}
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