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# enforce ordering of keys in test cases (test-case-property-ordering)
(fixable) The `--fix` option on the [command line](../user-guide/command-line-interface#fix) automatically fixes problems reported by this rule.
This rule enforces that the properties of RuleTester test cases are arranged in a consistent order.
## Rule Details
### Options
This rule has an array option:
* `["code", "output", "options", "parserOptions", "errors"]` (default): The properties of a test case should be placed in a consistent order.
Examples of **incorrect** code for this rule:
```js
/* eslint eslint-plugin/test-case-property-ordering: ["error",
["code", "output", "options", "parserOptions", "errors"]
] */
// invalid; wrong order
{
code: "foo",
options: ["baz"],
output: "bar",
}
// invalid; extra properties should need to be placed afterwards.
{
code: "foo",
env: { es6: true },
output: "bar",
options: ["baz"],
}
```
Examples of **correct** code for this rule:
```js
/* eslint eslint-plugin/test-case-property-ordering: ["error",
["code", "output", "options", "parserOptions", "errors"]
] */
// valid;
{
code: "foo",
output: "bar",
options: ["baz"],
}
```
## When Not To Use It
If don't want to enforce ordering of keys in test cases, you can turn off this rule.
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