Add a test

crates/ruff/tests/config.rs

@@ -0,0 +1,55 @@
+//! Tests for the `ruff config` subcommand.
+use std::process::Command;
+
+use insta_cmd::{assert_cmd_snapshot, get_cargo_bin};
+
+const BIN_NAME: &str = "ruff";
+
+#[test]
+fn lint_select() {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME)).arg("config").arg("lint.select"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    A list of rule codes or prefixes to enable. Prefixes can specify exact
+    rules (like `F841`), entire categories (like `F`), or anything in
+    between.
+
+    When breaking ties between enabled and disabled rules (via `select` and
+    `ignore`, respectively), more specific prefixes override less
+    specific prefixes.
+
+    Default value: ["E4", "E7", "E9", "F"]
+    Type: list[RuleSelector]
+    Example usage:
+    ```toml
+    # On top of the defaults (`E4`, E7`, `E9`, and `F`), enable flake8-bugbear (`B`) and flake8-quotes (`Q`).
+    select = ["E4", "E7", "E9", "F", "B", "Q"]
+    ```
+
+    ----- stderr -----
+    "###
+    );
+}
+
+#[test]
+fn lint_select_json() {
+    assert_cmd_snapshot!(
+        Command::new(get_cargo_bin(BIN_NAME)).arg("config").arg("lint.select").arg("--output-format").arg("json"), @r###"
+    success: true
+    exit_code: 0
+    ----- stdout -----
+    {
+      "doc": "A list of rule codes or prefixes to enable. Prefixes can specify exact\nrules (like `F841`), entire categories (like `F`), or anything in\nbetween.\n\nWhen breaking ties between enabled and disabled rules (via `select` and\n`ignore`, respectively), more specific prefixes override less\nspecific prefixes.",
+      "default": "[\"E4\", \"E7\", \"E9\", \"F\"]",
+      "value_type": "list[RuleSelector]",
+      "scope": null,
+      "example": "# On top of the defaults (`E4`, E7`, `E9`, and `F`), enable flake8-bugbear (`B`) and flake8-quotes (`Q`).\nselect = [\"E4\", \"E7\", \"E9\", \"F\", \"B\", \"Q\"]",
+      "deprecated": null
+    }
+
+    ----- stderr -----
+    "###
+    );
+}