jest/prefer-comparison-matcher Style

🛠️ An auto-fix is available for this rule.

What it does

This rule checks for comparisons in tests that could be replaced with one of the following built-in comparison matchers:

• toBeGreaterThan
• toBeGreaterThanOrEqual
• toBeLessThan
• toBeLessThanOrEqual

Examples

// invalid
expect(x > 5).toBe(true);
expect(x < 7).not.toEqual(true);
expect(x <= y).toStrictEqual(true);

// valid
expect(x).toBeGreaterThan(5);
expect(x).not.toBeLessThanOrEqual(7);
expect(x).toBeLessThanOrEqual(y);
// special case - see below
expect(x < "Carl").toBe(true);

How to use

To enable this rule in the CLI or using the config file, you can use:

CLI

oxlint --deny jest/prefer-comparison-matcher --jest-plugin

Config (.oxlintrc.json)

{
  "plugins": ["jest"],
  "rules": {
    "jest/prefer-comparison-matcher": "error"
  }
}

References

• Rule Source