Typo'ed or invalid styles pass toHaveStyle

[dmwyatt]

• @testing-library/jest-dom version: 4.1.0
• node version: 12.8.0
• npm (or yarn) version: 6.11.2

Relevant code or config:

it("should not pass", () => {
    const { getByText } = render(
      <span style={{ textDecoration: "line-through" }}>some text</span>
    );

    expect(getByText("some text")).toHaveStyle("hahaha:not a style");
  })

Problem description:

That test should fail, but any typo or invalid style will pass.

Suggested solution:

Get #81 into an acceptable state.

I'm mainly opening this issue to help others who might run into this pretty important bug.

I'm sure people using this library currently have tests that are passing that should not.

[Avi-Cohen-Nehemia]

@dmwyatt looks like the PR you linked has been merged. Can you close the issue if the problem is fixed?