deno.com
method Deno.TestContext.step
#TestContext.step(definition: TestStepDefinition): Promise<boolean>

Run a sub step of the parent test or step. Returns a promise that resolves to a boolean signifying if the step completed successfully.

The returned promise never rejects unless the arguments are invalid.

If the test was ignored the promise returns false.

Deno.test({
  name: "a parent test",
  async fn(t) {
    console.log("before the step");
    await t.step({
      name: "step 1",
      fn(t) {
        console.log("current step:", t.name);
      }
    });
    console.log("after the step");
  }
});

Parameters #

Return Type #

Promise<boolean>
#TestContext.step(
name: string,
fn: (t: TestContext) => void | Promise<void>,
): Promise<boolean>

Run a sub step of the parent test or step. Returns a promise that resolves to a boolean signifying if the step completed successfully.

The returned promise never rejects unless the arguments are invalid.

If the test was ignored the promise returns false.

Deno.test(
  "a parent test",
  async (t) => {
    console.log("before the step");
    await t.step(
      "step 1",
      (t) => {
        console.log("current step:", t.name);
      }
    );
    console.log("after the step");
  }
);

Parameters #

#name: string
#fn: (t: TestContext) => void | Promise<void>

Return Type #

Promise<boolean>
#TestContext.step(fn: (t: TestContext) => void | Promise<void>): Promise<boolean>

Run a sub step of the parent test or step. Returns a promise that resolves to a boolean signifying if the step completed successfully.

The returned promise never rejects unless the arguments are invalid.

If the test was ignored the promise returns false.

Deno.test(async function aParentTest(t) {
  console.log("before the step");
  await t.step(function step1(t) {
    console.log("current step:", t.name);
  });
  console.log("after the step");
});

Parameters #

#fn: (t: TestContext) => void | Promise<void>

Return Type #

Promise<boolean>