| 1 | import * as fs from "fs";
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| 2 |
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| 3 | const areBuffersEqual = (bufA: Buffer, bufB: Buffer) => {
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| 4 | const len = bufA.length;
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| 5 | if (len !== bufB.length) {
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| 6 | return false;
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| 7 | }
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| 8 | for (let i = 0; i < len; i += 1) {
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| 9 | if (bufA.readUInt8(i) !== bufB.readUInt8(i)) {
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| 10 | return false;
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| 11 | }
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| 12 | }
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| 13 | return true;
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| 14 | };
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| 15 |
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| 16 | export default (path: string) => {
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| 17 | return {
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| 18 | shouldNotExist: () => {
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| 19 | let message;
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| 20 | try {
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| 21 | fs.statSync(path);
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| 22 | message = `Path ${path} should NOT exist`;
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| 23 | } catch (err) {
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| 24 | if (err.code !== "ENOENT") {
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| 25 | throw err;
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| 26 | }
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| 27 | }
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| 28 | if (message) {
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| 29 | throw new Error(message);
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| 30 | }
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| 31 | },
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| 32 |
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| 33 | shouldBeDirectory: () => {
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| 34 | let message;
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| 35 | let stat;
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| 36 | try {
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| 37 | stat = fs.statSync(path);
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| 38 | if (!stat.isDirectory()) {
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| 39 | message = `Path ${path} should be a directory`;
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| 40 | }
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| 41 | } catch (err) {
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| 42 | if (err.code === "ENOENT") {
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| 43 | message = `Path ${path} should exist`;
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| 44 | } else {
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| 45 | throw err;
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| 46 | }
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| 47 | }
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| 48 | if (message) {
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| 49 | throw new Error(message);
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| 50 | }
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| 51 | },
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| 52 |
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| 53 | shouldBeFileWithContent: (expectedContent: any) => {
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| 54 | let message;
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| 55 | let content;
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| 56 |
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| 57 | const generateMessage = (expected: string, found: string) => {
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| 58 | message = `File ${path} should have content "${expected}" but found "${found}"`;
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| 59 | };
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| 60 |
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| 61 | try {
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| 62 | if (Buffer.isBuffer(expectedContent)) {
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| 63 | content = fs.readFileSync(path);
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| 64 | if (!areBuffersEqual(expectedContent, content)) {
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| 65 | generateMessage(
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| 66 | expectedContent.toString("hex"),
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| 67 | content.toString("hex")
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| 68 | );
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| 69 | }
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| 70 | } else {
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| 71 | content = fs.readFileSync(path, "utf8");
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| 72 | if (content !== expectedContent) {
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| 73 | generateMessage(expectedContent, content);
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| 74 | }
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| 75 | }
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| 76 | } catch (err) {
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| 77 | if (err.code === "ENOENT") {
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| 78 | message = `File ${path} should exist`;
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| 79 | } else {
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| 80 | throw err;
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| 81 | }
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| 82 | }
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| 83 | if (message) {
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| 84 | throw new Error(message);
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| 85 | }
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| 86 | },
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| 87 |
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| 88 | shouldHaveMode: (expectedMode: any) => {
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| 89 | let mode;
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| 90 | let message;
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| 91 |
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| 92 | try {
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| 93 | mode = fs.statSync(path).mode.toString(8);
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| 94 | mode = mode.substring(mode.length - 3);
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| 95 | if (mode !== expectedMode) {
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| 96 | message = `Path ${path} should have mode "${expectedMode}" but have instead "${mode}"`;
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| 97 | }
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| 98 | } catch (err) {
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| 99 | if (err.code === "ENOENT") {
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| 100 | message = `Path ${path} should exist`;
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| 101 | } else {
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| 102 | throw err;
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| 103 | }
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| 104 | }
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| 105 | if (message) {
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| 106 | throw new Error(message);
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| 107 | }
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| 108 | }
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| 109 | };
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| 110 | };
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