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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { escape } from "./escape.ts";import { assertEquals, assertMatch, assertNotMatch } from "../assert/mod.ts";
const ALL_ASCII =  "\x00\x01\x02\x03\x04\x05\x06\x07\b\t\n\v\f\r\x0E\x0F\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1A\x1B\x1C\x1D\x1E\x1F !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~\x7F";const ALL_REGEXP_FLAGS = "gimsuy";
Deno.test("escape() works with examples", async (t) => {  await t.step("`.` matches literal `.`", () => {    const re = new RegExp(`^${escape(".")}$`, "u");
    assertEquals("^\\.$", re.source);    assertMatch(".", re);    assertNotMatch("a", re);  });  await t.step("`$` matches literal `$`", () => {    const re = new RegExp(`^${escape("$")}$`);
    assertMatch("$", re);    assertNotMatch("", re);  });  await t.step("`*` matches literal `*`", () => {    const re = new RegExp(`^${escape("a*")}$`);
    assertMatch("a*", re);    assertNotMatch("", re);    assertNotMatch("aaa", re);  });  await t.step("escapes works correctly within character class", () => {    const re = new RegExp(`^[${escape(".$*+[](){}|\\<>")}]$`);
    assertMatch(".", re);    assertMatch("$", re);    assertMatch("*", re);    assertMatch("+", re);    assertMatch("[", re);    assertMatch("]", re);    assertMatch("(", re);    assertMatch(")", re);    assertMatch("{", re);    assertMatch("}", re);    assertMatch("|", re);    assertMatch("\\", re);    assertMatch("<", re);    assertMatch(">", re);
    assertNotMatch("a", re);  });});Deno.test("escape() works with all ASCII", async (t) => {  await t.step("interpolates without erroring", async (t) => {    await t.step("outside character class", () => {      for (const char of ALL_ASCII) {        for (const flag of ALL_REGEXP_FLAGS) {          new RegExp(escape(char), flag);        }      }    });    await t.step("within character class", () => {      for (const char of ALL_ASCII) {        for (const flag of ALL_REGEXP_FLAGS) {          new RegExp(`[${escape(char)}]`, flag);        }      }    });    await t.step("matches self", () => {      for (const char of ALL_ASCII) {        for (const flag of ALL_REGEXP_FLAGS) {          assertMatch(char, new RegExp(`^${escape(char)}$`, flag));        }      }    });    await t.step("doesn't match any other chars", () => {      for (const char of ALL_ASCII) {        for (const flag of ALL_REGEXP_FLAGS) {          if (flag === "i") continue;
          for (const char2 of ALL_ASCII) {            if (char2 === char) continue;
            assertNotMatch(              char2,              new RegExp(`^${escape(char)}$`, flag),            );          }        }      }    });  });});