Press n or j to go to the next uncovered block, b, p or k for the previous block.
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 | import * as assert from "assert" import * as fs from "fs" import * as util from "util" import { Reader } from "../src/reader" describe("reader", () => { const content = Buffer.from("foo bar baz qux garply waldo fred plugh xyzzy thud mumble frobnozzle") const reader = new Reader(content) it("should have the offset at zero", () => { assert.equal(reader.offset, 0) }) it("should read foo bar baz qux", () => { assert.deepEqual(reader.read(3), Buffer.from("foo")) assert.deepEqual(reader.read(4), Buffer.from(" bar")) assert.deepEqual(reader.read(4), Buffer.from(" baz")) assert.deepEqual(reader.read(4), Buffer.from(" qux")) }) it("should peek", () => { assert.deepEqual(reader.peek(7), Buffer.from(" garply")) assert.deepEqual(reader.peek(7), Buffer.from(" garply")) }) it("should jump to foo", () => { assert.deepEqual(reader.jump(0).read(3), Buffer.from("foo")) assert.deepEqual(reader.jump(0).read(3), Buffer.from("foo")) }) it("should clamp to waldo", () => { reader.jump(23).clamp() assert.deepEqual(reader.jump(0).read(5), Buffer.from("waldo")) assert.deepEqual(reader.jump(0).read(5), Buffer.from("waldo")) }) it("should unclamp", () => { reader.unclamp() assert.deepEqual(reader.jump(0).read(3), Buffer.from("foo")) }) it("should decode", () => { assert.equal(reader.read(10, "utf8"), " bar baz q") }) it("should skip", () => { reader.skip(10) assert.equal(reader.read(10, "utf8"), "waldo fred") }) it("should error if reading past end", () => { assert.throws(() => reader.jump(1000).read(5), /EOF/) assert.equal(reader.offset, 1000) }) it("should work with file buffer", async () => { const newReader = new Reader(await util.promisify(fs.readFile)(__filename)) assert.equal(newReader.read(6, "utf8"), "import") }) }) |