ruff/crates/ruff_cli/tests/lint.rs
Zanie Blue 22e18741bd
Update CLI to respect fix applicability (#7769)
Rebase of https://github.com/astral-sh/ruff/pull/5119 authored by
@evanrittenhouse with additional refinements.

## Changes

- Adds `--unsafe-fixes` / `--no-unsafe-fixes` flags to `ruff check`
- Violations with unsafe fixes are not shown as fixable unless opted-in
- Fix applicability is respected now
    - `Applicability::Never` fixes are no longer applied
    - `Applicability::Sometimes` fixes require opt-in
    - `Applicability::Always` fixes are unchanged
- Hints for availability of `--unsafe-fixes` added to `ruff check`
output

## Examples

Check hints at hidden unsafe fixes
```
❯ ruff check example.py --no-cache --select F601,W292
example.py:1:14: F601 Dictionary key literal `'a'` repeated
example.py:2:15: W292 [*] No newline at end of file
Found 2 errors.
[*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
```

We could add an indicator for which violations have hidden fixes in the
future.

Check treats unsafe fixes as applicable with opt-in
```
❯ ruff check example.py --no-cache --select F601,W292 --unsafe-fixes
example.py:1:14: F601 [*] Dictionary key literal `'a'` repeated
example.py:2:15: W292 [*] No newline at end of file
Found 2 errors.
[*] 2 fixable with the --fix option.
```

Also can be enabled in the config file

```
❯ cat ruff.toml
unsafe-fixes = true
```

And opted-out per invocation

```
❯ ruff check example.py --no-cache --select F601,W292 --no-unsafe-fixes
example.py:1:14: F601 Dictionary key literal `'a'` repeated
example.py:2:15: W292 [*] No newline at end of file
Found 2 errors.
[*] 1 fixable with the `--fix` option (1 hidden fix can be enabled with the `--unsafe-fixes` option).
```

Diff does not include unsafe fixes
```
❯ ruff check example.py --no-cache --select F601,W292 --diff
--- example.py
+++ example.py
@@ -1,2 +1,2 @@
 x = {'a': 1, 'a': 1}
-print(('foo'))
+print(('foo'))
\ No newline at end of file

Would fix 1 error.
```

Unless there is opt-in
```
❯ ruff check example.py --no-cache --select F601,W292 --diff --unsafe-fixes
--- example.py
+++ example.py
@@ -1,2 +1,2 @@
-x = {'a': 1}
-print(('foo'))
+x = {'a': 1, 'a': 1}
+print(('foo'))
\ No newline at end of file

Would fix 2 errors.
```

https://github.com/astral-sh/ruff/pull/7790 will improve the diff
messages following this pull request

Similarly, `--fix` and `--fix-only` require the `--unsafe-fixes` flag to
apply unsafe fixes.

## Related

Replaces #5119
Closes https://github.com/astral-sh/ruff/issues/4185
Closes https://github.com/astral-sh/ruff/issues/7214
Closes https://github.com/astral-sh/ruff/issues/4845
Closes https://github.com/astral-sh/ruff/issues/3863
Addresses https://github.com/astral-sh/ruff/issues/6835
Addresses https://github.com/astral-sh/ruff/issues/7019
Needs follow-up https://github.com/astral-sh/ruff/issues/6962
Needs follow-up https://github.com/astral-sh/ruff/issues/4845
Needs follow-up https://github.com/astral-sh/ruff/issues/7436
Needs follow-up https://github.com/astral-sh/ruff/issues/7025
Needs follow-up https://github.com/astral-sh/ruff/issues/6434
Follow-up #7790 
Follow-up https://github.com/astral-sh/ruff/pull/7792

---------

Co-authored-by: Evan Rittenhouse <evanrittenhouse@gmail.com>
2023-10-06 03:41:43 +00:00

157 lines
4 KiB
Rust

//! Tests the interaction of the `lint` configuration section
#![cfg(not(target_family = "wasm"))]
use std::fs;
use std::process::Command;
use std::str;
use anyhow::Result;
use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};
use tempfile::TempDir;
const BIN_NAME: &str = "ruff";
const STDIN_BASE_OPTIONS: &[&str] = &["--no-cache", "--output-format", "text"];
#[test]
fn top_level_options() -> Result<()> {
let tempdir = TempDir::new()?;
let ruff_toml = tempdir.path().join("ruff.toml");
fs::write(
&ruff_toml,
r#"
extend-select = ["B", "Q"]
[flake8-quotes]
inline-quotes = "single"
"#,
)?;
assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
.args(STDIN_BASE_OPTIONS)
.arg("--config")
.arg(&ruff_toml)
.arg("-")
.pass_stdin(r#"a = "abcba".strip("aba")"#), @r###"
success: false
exit_code: 1
----- stdout -----
-:1:5: Q000 [*] Double quotes found but single quotes preferred
-:1:5: B005 Using `.strip()` with multi-character strings is misleading
-:1:19: Q000 [*] Double quotes found but single quotes preferred
Found 3 errors.
[*] 2 fixable with the `--fix` option.
----- stderr -----
"###);
Ok(())
}
#[test]
fn lint_options() -> Result<()> {
let tempdir = TempDir::new()?;
let ruff_toml = tempdir.path().join("ruff.toml");
fs::write(
&ruff_toml,
r#"
[lint]
extend-select = ["B", "Q"]
[lint.flake8-quotes]
inline-quotes = "single"
"#,
)?;
assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
.args(STDIN_BASE_OPTIONS)
.arg("--config")
.arg(&ruff_toml)
.arg("-")
.pass_stdin(r#"a = "abcba".strip("aba")"#), @r###"
success: false
exit_code: 1
----- stdout -----
-:1:5: Q000 [*] Double quotes found but single quotes preferred
-:1:5: B005 Using `.strip()` with multi-character strings is misleading
-:1:19: Q000 [*] Double quotes found but single quotes preferred
Found 3 errors.
[*] 2 fixable with the `--fix` option.
----- stderr -----
"###);
Ok(())
}
/// Tests that configurations from the top-level and `lint` section are merged together.
#[test]
fn mixed_levels() -> Result<()> {
let tempdir = TempDir::new()?;
let ruff_toml = tempdir.path().join("ruff.toml");
fs::write(
&ruff_toml,
r#"
extend-select = ["B", "Q"]
[lint.flake8-quotes]
inline-quotes = "single"
"#,
)?;
assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
.args(STDIN_BASE_OPTIONS)
.arg("--config")
.arg(&ruff_toml)
.arg("-")
.pass_stdin(r#"a = "abcba".strip("aba")"#), @r###"
success: false
exit_code: 1
----- stdout -----
-:1:5: Q000 [*] Double quotes found but single quotes preferred
-:1:5: B005 Using `.strip()` with multi-character strings is misleading
-:1:19: Q000 [*] Double quotes found but single quotes preferred
Found 3 errors.
[*] 2 fixable with the `--fix` option.
----- stderr -----
"###);
Ok(())
}
/// Tests that options in the `lint` section have higher precedence than top-level options (because they are more specific).
#[test]
fn precedence() -> Result<()> {
let tempdir = TempDir::new()?;
let ruff_toml = tempdir.path().join("ruff.toml");
fs::write(
&ruff_toml,
r#"
[lint]
extend-select = ["B", "Q"]
[flake8-quotes]
inline-quotes = "double"
[lint.flake8-quotes]
inline-quotes = "single"
"#,
)?;
assert_cmd_snapshot!(Command::new(get_cargo_bin(BIN_NAME))
.args(STDIN_BASE_OPTIONS)
.arg("--config")
.arg(&ruff_toml)
.arg("-")
.pass_stdin(r#"a = "abcba".strip("aba")"#), @r###"
success: false
exit_code: 1
----- stdout -----
-:1:5: Q000 [*] Double quotes found but single quotes preferred
-:1:5: B005 Using `.strip()` with multi-character strings is misleading
-:1:19: Q000 [*] Double quotes found but single quotes preferred
Found 3 errors.
[*] 2 fixable with the `--fix` option.
----- stderr -----
"###);
Ok(())
}