12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697
import { assertSpyCall, assertSpyCalls } from "./asserts.ts";import { assertEquals, assertThrows } from "./deps.ts";import { SpyError, Stub, stub } from "./stub.ts";import { Point } from "./test_shared.ts";
Deno.test("stub default", () => {  const point = new Point(2, 3);  const func: Stub<Point> = stub(point, "action");
  try {    assertSpyCalls(func, 0);
    assertEquals(func(), undefined);    assertSpyCall(func, 0, {      self: undefined,      args: [],      returned: undefined,    });    assertSpyCalls(func, 1);
    assertEquals(point.action(), undefined);    assertSpyCall(func, 1, {      self: point,      args: [],      returned: undefined,    });    assertSpyCalls(func, 2);
    assertEquals(func.original, Point.prototype.action);    assertEquals(point.action, func);  } finally {    func.restore();  }  assertEquals(point.action, Point.prototype.action);  assertThrows(    () => func.restore(),    SpyError,    "instance property already restored",  );});
Deno.test("stub non function property", () => {  const point = new Point(2, 3);  assertEquals(point.x, 2);  const prop: Stub<Point> = stub(point, "x", 4);
  try {    assertSpyCalls(prop, 0);
    assertThrows(() => prop(), SpyError, "not a function");    assertEquals(point.x, 4);  } finally {    prop.restore();  }  assertEquals(point.x, 2);  assertThrows(    () => prop.restore(),    SpyError,    "instance property already restored",  );});
Deno.test("stub function", () => {  const point = new Point(2, 3);  const returns = [1, "b", 2, "d"];  const func: Stub<Point> = stub(point, "action", () => returns.shift());
  assertSpyCalls(func, 0);
  assertEquals(func(), 1);  assertSpyCall(func, 0, {    self: undefined,    args: [],    returned: 1,  });  assertSpyCalls(func, 1);
  assertEquals(point.action(), "b");  assertSpyCall(func, 1, {    self: point,    args: [],    returned: "b",  });  assertSpyCalls(func, 2);
  assertEquals(func.original, Point.prototype.action);  assertEquals(point.action, func);
  func.restore();  assertEquals(point.action, Point.prototype.action);  assertThrows(    () => func.restore(),    SpyError,    "instance property already restored",  );});