/
buffer_test.ts
107 lines (90 loc) · 3.13 KB
/
buffer_test.ts
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import { assertEquals } from "https://deno.land/std@0.195.0/assert/assert_equals.ts";
import Buffer from "./buffer.ts";
Deno.test("Buffer Creation - create an empty buffer", () => {
const buffer = new Buffer<number>(3);
assertEquals(buffer.size, 0);
});
Deno.test("Buffer Creation - create a buffer with initial entries", () => {
const buffer = new Buffer<number>(3, [1, 2, 3, 4]);
assertEquals(buffer.size, 3);
assertEquals([...buffer.values()], [2, 3, 4]);
});
Deno.test("Buffer Push - push a value into an empty buffer", () => {
const buffer = new Buffer<number>(3);
buffer.push(1);
assertEquals(buffer.size, 1);
assertEquals([...buffer.values()], [1]);
});
Deno.test("Buffer Push - push multiple values into the buffer", () => {
const buffer = new Buffer<number>(3);
buffer.push(1).push(2).push(3);
assertEquals(buffer.size, 3);
assertEquals([...buffer.values()], [1, 2, 3]);
});
Deno.test("Buffer Push - push a value into a full buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
buffer.push(4);
assertEquals(buffer.size, 3);
assertEquals([...buffer.values()], [2, 3, 4]);
});
Deno.test("Buffer Pop - pop a value from an empty buffer", () => {
const buffer = new Buffer<number>(3);
const value = buffer.pop();
assertEquals(value, undefined);
assertEquals(buffer.size, 0);
});
Deno.test("Buffer Pop - pop a value from a buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
const value = buffer.pop();
assertEquals(value, 1);
assertEquals(buffer.size, 2);
});
Deno.test("Buffer Peek - peek a value from an empty buffer", () => {
const buffer = new Buffer<number>(3);
const value = buffer.peek();
assertEquals(value, undefined);
});
Deno.test("Buffer Peek - peek a value from a buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
const value = buffer.peek();
assertEquals(value, 1);
assertEquals(buffer.size, 3);
});
Deno.test("Buffer Clear - clear an empty buffer", () => {
const buffer = new Buffer<number>(3);
buffer.clear();
assertEquals(buffer.size, 0);
});
Deno.test("Buffer Clear - clear a buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
buffer.clear();
assertEquals(buffer.size, 0);
});
Deno.test("Buffer Size - size of an empty buffer", () => {
const buffer = new Buffer<number>(3);
assertEquals(buffer.size, 0);
});
Deno.test("Buffer Size - size of a buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
assertEquals(buffer.size, 3);
});
Deno.test("Buffer Iteration - iterate over an empty buffer", () => {
const buffer = new Buffer<number>(3);
assertEquals([...buffer], []);
});
Deno.test("Buffer Iteration - iterate over a buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
assertEquals([...buffer], [1, 2, 3]);
});
Deno.test("Buffer forEach - forEach on an empty buffer", () => {
const buffer = new Buffer<number>(3);
let count = 0;
buffer.forEach(() => count++);
assertEquals(count, 0);
});
Deno.test("Buffer forEach - forEach on a buffer", () => {
const buffer = new Buffer<number>(3, [1, 2, 3]);
let count = 0;
buffer.forEach(() => count++);
assertEquals(count, 3);
});