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import { assertEquals } from "https://deno.land/std@0.83.0/testing/asserts.ts";import { readline } from "./mod.ts";
async function testFileReader(): Promise<Deno.Reader> {  const buf = new Deno.Buffer();  const enc = new TextEncoder();
  await buf.write(enc.encode("1\n2"));  await buf.write(enc.encode("\n3"));  await buf.write(enc.encode("\n4\n5\n6"));
  return buf;}
Deno.test({  name: "read lines from reader",  async fn() {    const lines = [];    for await (const line of readline(await testFileReader())) {      lines.push(line);    }
    assertEquals(lines, [      new Uint8Array([49]),      new Uint8Array([50]),      new Uint8Array([51]),      new Uint8Array([52]),      new Uint8Array([53]),      new Uint8Array([54]),    ]);  },});
Deno.test({  name: "read lines from reader with custom separator",  async fn() {    const lines = [];    for await (const line of readline(await testFileReader(), {      separator: new Uint8Array([10, 51, 10]),    })) {      lines.push(line);    }
    assertEquals(lines, [      new Uint8Array([49, 10, 50]),      new Uint8Array([52, 10, 53, 10, 54]),    ]);  },});
Deno.test({  name: "read lines from reader where separator is the first character",  async fn() {    const lines = [];    for await (const line of readline(await testFileReader(), {      separator: new Uint8Array([49]),    })) {      lines.push(line);    }
    assertEquals(lines, [      new Uint8Array([]),      new Uint8Array([10, 50, 10, 51, 10, 52, 10, 53, 10, 54]),    ]);  },});
Deno.test({  name: "read lines from reader where separator is the last character",  async fn() {    const lines = [];    for await (const line of readline(await testFileReader(), {      separator: new Uint8Array([54]),    })) {      lines.push(line);    }
    assertEquals(lines, [      new Uint8Array([49, 10, 50, 10, 51, 10, 52, 10, 53, 10]),      new Uint8Array([]),    ]);  },});