# `DEPRECATED` Enforce valid `expect()` usage (valid-expect)
Rule is `DEPRECATED` use `expect-matcher` and `expect-single-argument` instead.

Ensure `expect()` is called with a single argument and there is an actual expectation made.

## Rule details

This rule triggers a warning if `expect()` is called with more than one argument or without arguments.
It would also issue a warning if there is nothing called on `expect()`, e.g.:

```js
expect();
expect("something");
```

or when a matcher function was not called, e.g.:

```js
expect(true).toBeDefined
```

This rule is enabled by default.

### Default configuration

The following patterns are considered warnings:

```js
expect();
expect().toEqual("something");
expect("something", "else");
expect("something");
expect(true).toBeDefined;
```

The following patterns are not warnings:

```js
expect("something").toEqual("something");
expect([1, 2, 3]).toEqual([1, 2, 3]);
expect(true).toBeDefined();
```