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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import {
findIndex,
findLastIndex,
equal,
hasPrefix,
hasSuffix,
repeat,
concat,
contains,
copyBytes,
} from "./mod.ts";
import { assertEquals, assertThrows, assert } from "../testing/asserts.ts";
import { encode, decode } from "../encoding/utf8.ts";
Deno.test("[bytes] findIndex1", () => {
const i = findIndex(
new Uint8Array([1, 2, 0, 1, 2, 0, 1, 2, 0, 1, 3]),
new Uint8Array([0, 1, 2]),
);
assertEquals(i, 2);
});
Deno.test("[bytes] findIndex2", () => {
const i = findIndex(new Uint8Array([0, 0, 1]), new Uint8Array([0, 1]));
assertEquals(i, 1);
});
Deno.test("[bytes] findIndex3", () => {
const i = findIndex(encode("Deno"), encode("D"));
assertEquals(i, 0);
});
Deno.test("[bytes] findLastIndex1", () => {
const i = findLastIndex(
new Uint8Array([0, 1, 2, 0, 1, 2, 0, 1, 3]),
new Uint8Array([0, 1, 2]),
);
assertEquals(i, 3);
});
Deno.test("[bytes] findLastIndex2", () => {
const i = findLastIndex(new Uint8Array([0, 1, 1]), new Uint8Array([0, 1]));
assertEquals(i, 0);
});
Deno.test("[bytes] equal", () => {
const v = equal(new Uint8Array([0, 1, 2, 3]), new Uint8Array([0, 1, 2, 3]));
assertEquals(v, true);
});
Deno.test("[bytes] hasPrefix", () => {
const v = hasPrefix(new Uint8Array([0, 1, 2]), new Uint8Array([0, 1]));
assertEquals(v, true);
});
Deno.test("[bytes] hasSuffix", () => {
const v = hasSuffix(new Uint8Array([0, 1, 2]), new Uint8Array([1, 2]));
assertEquals(v, true);
});
Deno.test("[bytes] repeat", () => {
// input / output / count / error message
const repeatTestCase = [
["", "", 0],
["", "", 1],
["", "", 1.1, "bytes: repeat count must be an integer"],
["", "", 2],
["", "", 0],
["-", "", 0],
["-", "-", -1, "bytes: negative repeat count"],
["-", "----------", 10],
["abc ", "abc abc abc ", 3],
];
for (const [input, output, count, errMsg] of repeatTestCase) {
if (errMsg) {
assertThrows(
(): void => {
repeat(new TextEncoder().encode(input as string), count as number);
},
Error,
errMsg as string,
);
} else {
const newBytes = repeat(
new TextEncoder().encode(input as string),
count as number,
);
assertEquals(new TextDecoder().decode(newBytes), output);
}
}
});
Deno.test("[bytes] concat", () => {
const u1 = encode("Hello ");
const u2 = encode("World");
const joined = concat(u1, u2);
assertEquals(decode(joined), "Hello World");
assert(u1 !== joined);
assert(u2 !== joined);
});
Deno.test("[bytes] concat empty arrays", () => {
const u1 = new Uint8Array();
const u2 = new Uint8Array();
const joined = concat(u1, u2);
assertEquals(joined.byteLength, 0);
assert(u1 !== joined);
assert(u2 !== joined);
});
Deno.test("[bytes] contain", () => {
const source = encode("deno.land");
const pattern = encode("deno");
assert(contains(source, pattern));
assert(contains(new Uint8Array([0, 1, 2, 3]), new Uint8Array([2, 3])));
});
Deno.test("[io/tuil] copyBytes", function (): void {
const dst = new Uint8Array(4);
dst.fill(0);
let src = Uint8Array.of(1, 2);
let len = copyBytes(src, dst, 0);
assert(len === 2);
assertEquals(dst, Uint8Array.of(1, 2, 0, 0));
dst.fill(0);
src = Uint8Array.of(1, 2);
len = copyBytes(src, dst, 1);
assert(len === 2);
assertEquals(dst, Uint8Array.of(0, 1, 2, 0));
dst.fill(0);
src = Uint8Array.of(1, 2, 3, 4, 5);
len = copyBytes(src, dst);
assert(len === 4);
assertEquals(dst, Uint8Array.of(1, 2, 3, 4));
dst.fill(0);
src = Uint8Array.of(1, 2);
len = copyBytes(src, dst, 100);
assert(len === 0);
assertEquals(dst, Uint8Array.of(0, 0, 0, 0));
dst.fill(0);
src = Uint8Array.of(3, 4);
len = copyBytes(src, dst, -2);
assert(len === 2);
assertEquals(dst, Uint8Array.of(3, 4, 0, 0));
});
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