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__snapshots__
__snapshots__
 
 
testdata/configure_global_sanitizers
testdata/configure_global_sanitizers
 
 
README.md
README.md
 
 
_mock_utils.ts
_mock_utils.ts
 
 
_test_suite.ts
_test_suite.ts
 
 
_test_utils.ts
_test_utils.ts
 
 
_time.ts
_time.ts
 
 
bdd.ts
bdd.ts
 
 
bdd_test.ts
bdd_test.ts
 
 
deno.json
deno.json
 
 
mock.ts
mock.ts
 
 
mock_test.ts
mock_test.ts
 
 
snapshot.ts
snapshot.ts
 
 
snapshot_test.ts
snapshot_test.ts
 
 
time.ts
time.ts
 
 
time_test.ts
time_test.ts
 
 
types.ts
types.ts
 
 
types_test.ts
types_test.ts
 
 
unstable_bdd.ts
unstable_bdd.ts
 
 
unstable_bdd_test.ts
unstable_bdd_test.ts
 
 
unstable_stub.ts
unstable_stub.ts
 
 
unstable_stub_test.ts
unstable_stub_test.ts
 
 
unstable_types.ts
unstable_types.ts
 
 
unstable_types_test.ts
unstable_types_test.ts
 
 

README.md

This package provides utilities for testing.

import { assertSpyCalls, spy } from "@std/testing/mock";
import { FakeTime } from "@std/testing/time";

function secondInterval(cb: () => void): number {
  return setInterval(cb, 1000);
}

Deno.test("secondInterval calls callback every second and stops after being cleared", () => {
  using time = new FakeTime();

  const cb = spy();
  const intervalId = secondInterval(cb);
  assertSpyCalls(cb, 0);
  time.tick(500);
  assertSpyCalls(cb, 0);
  time.tick(500);
  assertSpyCalls(cb, 1);
  time.tick(3500);
  assertSpyCalls(cb, 4);

  clearInterval(intervalId);
  time.tick(1000);
  assertSpyCalls(cb, 4);
});