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df9fdc8 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 | import { describe, it, expect } from "vitest";
import { filesize, SPECS } from "../utils/filesize";
describe("filesize", () => {
describe("basic functionality", () => {
it("should format bytes correctly with default spec (jedec)", () => {
expect(filesize(0)).toBe("0.0 b");
expect(filesize(512)).toBe("512.0 b");
expect(filesize(1024)).toBe("1.0 Kb");
expect(filesize(1536)).toBe("1.5 Kb"); // 1024 + 512
expect(filesize(1048576)).toBe("1.0 Mb"); // 1024^2
expect(filesize(1073741824)).toBe("1.0 Gb"); // 1024^3
});
it("should handle different fixed decimal places", () => {
expect(filesize(1536, 0)).toBe("2 Kb");
expect(filesize(1536, 1)).toBe("1.5 Kb");
expect(filesize(1536, 2)).toBe("1.50 Kb");
expect(filesize(1536, 3)).toBe("1.500 Kb");
});
it("should handle negative numbers by taking absolute value", () => {
expect(filesize(-1024)).toBe("1.0 Kb");
expect(filesize(-1536)).toBe("1.5 Kb");
expect(filesize(-0)).toBe("0.0 b");
});
});
describe("SI specification", () => {
it("should use base 1000 for SI spec", () => {
expect(filesize(1000, 1, "si")).toBe("1.0 kb");
expect(filesize(1500, 1, "si")).toBe("1.5 kb");
expect(filesize(1000000, 1, "si")).toBe("1.0 Mb");
expect(filesize(1000000000, 1, "si")).toBe("1.0 Gb");
});
it("should handle large numbers with SI spec", () => {
expect(filesize(1e12, 1, "si")).toBe("1.0 Tb");
expect(filesize(1e15, 1, "si")).toBe("1.0 Pb");
expect(filesize(1e18, 1, "si")).toBe("1.0 Eb");
});
});
describe("IEC specification", () => {
it("should use base 1024 with binary units for IEC spec", () => {
expect(filesize(1024, 1, "iec")).toBe("1.0 Kib");
expect(filesize(1536, 1, "iec")).toBe("1.5 Kib");
expect(filesize(1048576, 1, "iec")).toBe("1.0 Mib");
expect(filesize(1073741824, 1, "iec")).toBe("1.0 Gib");
});
it("should handle large numbers with IEC spec", () => {
expect(filesize(Math.pow(1024, 4), 1, "iec")).toBe("1.0 Tib");
expect(filesize(Math.pow(1024, 5), 1, "iec")).toBe("1.0 Pib");
});
});
describe("JEDEC specification", () => {
it("should use base 1024 with decimal-style units for JEDEC spec", () => {
expect(filesize(1024, 1, "jedec")).toBe("1.0 Kb");
expect(filesize(1536, 1, "jedec")).toBe("1.5 Kb");
expect(filesize(1048576, 1, "jedec")).toBe("1.0 Mb");
expect(filesize(1073741824, 1, "jedec")).toBe("1.0 Gb");
});
});
describe("edge cases", () => {
it("should handle very large numbers", () => {
const veryLarge = Math.pow(1024, 8); // Yottabytes
expect(filesize(veryLarge, 1, "jedec")).toBe("1.0 Yb");
});
it("should handle decimal input", () => {
expect(filesize(1024.5, 1)).toBe("1.0 Kb");
expect(filesize(1500.7, 2)).toBe("1.47 Kb");
});
it("should handle invalid spec by falling back to jedec", () => {
expect(filesize(1024, 1, "invalid")).toBe("1.0 Kb");
expect(filesize(1024, 1, "")).toBe("1.0 Kb");
expect(filesize(1024, 1, undefined)).toBe("1.0 Kb");
});
});
describe("precision and rounding", () => {
it("should round correctly with different precision levels", () => {
const testBytes = 1536; // 1.5 KB
expect(filesize(testBytes, 0)).toBe("2 Kb");
expect(filesize(testBytes, 1)).toBe("1.5 Kb");
expect(filesize(testBytes, 2)).toBe("1.50 Kb");
});
it("should handle rounding edge cases", () => {
const almostTwoKb = 2047; // almost 2KB
expect(filesize(almostTwoKb, 0)).toBe("2 Kb");
expect(filesize(almostTwoKb, 3)).toBe("1.999 Kb");
});
});
describe("SPECS constant", () => {
it("should have correct radix values", () => {
expect(SPECS.si.radix).toBe(1000);
expect(SPECS.iec.radix).toBe(1024);
expect(SPECS.jedec.radix).toBe(1024);
});
it("should have correct unit arrays", () => {
expect(SPECS.si.unit).toEqual([
"b",
"kb",
"Mb",
"Gb",
"Tb",
"Pb",
"Eb",
"Zb",
"Yb"
]);
expect(SPECS.iec.unit).toEqual([
"b",
"Kib",
"Mib",
"Gib",
"Tib",
"Pib",
"Eib",
"Zib",
"Yib"
]);
expect(SPECS.jedec.unit).toEqual([
"b",
"Kb",
"Mb",
"Gb",
"Tb",
"Pb",
"Eb",
"Zb",
"Yb"
]);
});
});
});
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