source: trip-planner-front/node_modules/hdr-histogram-js/src/formatters.spec.ts

Last change on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1import {
2 integerFormatter,
3 floatFormatter,
4 keepSignificantDigits,
5} from "./formatters";
6
7describe("Integer formatter", () => {
8 it("should format integer as a string", () => {
9 // given
10 const formatter = integerFormatter(3);
11 // when
12 const result = formatter(123);
13 // then
14 expect(result).toBe("123");
15 });
16
17 it("should add padding on the left when input has a few digits", () => {
18 // given
19 const formatter = integerFormatter(5);
20 // when
21 const result = formatter(123);
22 // then
23 expect(result).toBe(" 123");
24 });
25});
26
27describe("Integer processor", () => {
28 it("should keep value unchanged when value small enough comapred to number of value digits", () => {
29 // given
30 const processor = keepSignificantDigits(3);
31 // when
32 const result = processor(421);
33 // then
34 expect(result).toBe(421);
35 });
36
37 it("should lower value when value has more digits than what is needed", () => {
38 // given
39 const processor = keepSignificantDigits(3);
40 // when
41 const result = processor(123456);
42 // then
43 expect(result).toBe(123000);
44 });
45});
46
47describe("Float formatter", () => {
48 it("should format float as a string", () => {
49 // given
50 const formatter = floatFormatter(5, 2);
51 // when
52 const result = formatter(12.34);
53 // then
54 expect(result).toBe("12.34");
55 });
56
57 it("should format float as a string with given number of fraction digits", () => {
58 // given
59 const formatter = floatFormatter(5, 2);
60 // when
61 const result = formatter(12.342);
62 // then
63 expect(result).toBe("12.34");
64 });
65
66 it("should format float as a string adding fraction digits", () => {
67 // given
68 const formatter = floatFormatter(5, 2);
69 // when
70 const result = formatter(12.3);
71 // then
72 expect(result).toBe("12.30");
73 });
74
75 it("should format the whole float input even with lots of digits", () => {
76 // given
77 const formatter = floatFormatter(5, 2);
78 // when
79 const result = formatter(12456789.34);
80 // then
81 expect(result).toBe("12456789.34");
82 });
83
84 it("should add padding on the left when not enough digits", () => {
85 // given
86 const formatter = floatFormatter(5, 2);
87 // when
88 const result = formatter(9.34);
89 // then
90 expect(result).toBe(" 9.34");
91 });
92});
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