Ignore UV_CACHE_DIR in help tests (#7895)

.editorconfig

@@ -16,5 +16,8 @@ indent_size = 4
 [*.snap]
 trim_trailing_whitespace = false
 
+[crates/uv/tests/help.rs]
+trim_trailing_whitespace = false
+
 [*.md]
 max_line_length = 100

.github/workflows/ci.yml

@@ -173,11 +173,12 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
 
+      - uses: astral-sh/setup-uv@v3
+        with:
+          version: "latest"
+          enable-cache: true
       - name: "Install required Python versions"
-        run: |
-          # astral-sh/setup-uv sets `UV_CACHE_DIR` which disrupts the help message check
-          curl -LsSf https://astral.sh/uv/install.sh | sh
-          uv python install
+        run: uv python install
 
       - name: "Install cargo nextest"
         uses: taiki-e/install-action@v2
@@ -221,11 +222,12 @@ jobs:
       - name: "Install Rust toolchain"
         run: rustup show
 
+      - uses: astral-sh/setup-uv@v3
+        with:
+          version: "latest"
+          enable-cache: true
       - name: "Install required Python versions"
-        run: |
-          # astral-sh/setup-uv sets `UV_CACHE_DIR` which disrupts the help message check
-          curl -LsSf https://astral.sh/uv/install.sh | sh
-          uv python install
+        run: uv python install
 
       - name: "Install cargo nextest"
         uses: taiki-e/install-action@v2

crates/uv/tests/common/mod.rs

@@ -194,6 +194,20 @@ impl TestContext {
         self
     }
 
+    /// Ignore `UV_CACHE_DIR` env variable in tests.
+    #[must_use]
+    pub fn with_ignore_cache_dir(mut self) -> Self {
+        self.filters.push((
+            r"\[env:[\n\s]* UV_CACHE_DIR=.+\]".to_string(),
+            "[env: UV_CACHE_DIR=]".to_string(),
+        ));
+        // When `--cache-dir` is followed with other options,
+        // remove it from the text. Since its presence is inconsistent.
+        self.filters
+            .push((r"--cache-dir <CACHE_DIR> <".to_string(), "<".to_string()));
+        self
+    }
+
     /// Discover the path to the XDG state directory. We use this, rather than the OS-specific
     /// temporary directory, because on macOS (and Windows on GitHub Actions), they involve
     /// symlinks. (On macOS, the temporary directory is, like `/var/...`, which resolves to

crates/uv/tests/help.rs

@@ -4,7 +4,7 @@ mod common;
 
 #[test]
 fn help() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     // The `uv help` command should show the long help message
     uv_snapshot!(context.filters(), context.help(), @r###"
@@ -74,7 +74,8 @@ fn help() {
 
 #[test]
 fn help_flag() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
+
     uv_snapshot!(context.filters(), context.command().arg("--help"), @r###"
     success: true
     exit_code: 0
@@ -140,7 +141,8 @@ fn help_flag() {
 
 #[test]
 fn help_short_flag() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
+
     uv_snapshot!(context.filters(), context.command().arg("-h"), @r###"
     success: true
     exit_code: 0
@@ -206,7 +208,7 @@ fn help_short_flag() {
 
 #[test]
 fn help_subcommand() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     uv_snapshot!(context.filters(), context.help().arg("python"), @r###"
     success: true
@@ -394,7 +396,7 @@ fn help_subcommand() {
 
 #[test]
 fn help_subsubcommand() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     uv_snapshot!(context.filters(), context.help().arg("python").arg("install"), @r###"
     success: true
@@ -562,7 +564,7 @@ fn help_subsubcommand() {
 
 #[test]
 fn help_flag_subcommand() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     uv_snapshot!(context.filters(), context.command().arg("python").arg("--help"), @r###"
     success: true
@@ -618,7 +620,7 @@ fn help_flag_subcommand() {
 
 #[test]
 fn help_flag_subsubcommand() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     uv_snapshot!(context.filters(), context.command().arg("python").arg("install").arg("--help"), @r###"
     success: true
@@ -747,7 +749,7 @@ fn help_unknown_subsubcommand() {
 
 #[test]
 fn help_with_global_option() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     uv_snapshot!(context.filters(), context.help().arg("--no-cache"), @r###"
     success: true
@@ -849,7 +851,7 @@ fn help_with_version() {
 
 #[test]
 fn help_with_no_pager() {
-    let context = TestContext::new_with_versions(&[]);
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
     // We can't really test whether the --no-pager option works with a snapshot test.
     // It's still nice to have a test for the option to confirm the option exists.

crates/uv/tests/pip_uninstall.rs

@@ -12,13 +12,10 @@ use crate::common::{get_bin, venv_to_interpreter, TestContext};
 mod common;
 
 #[test]
-fn no_arguments() -> Result<()> {
-    let temp_dir = assert_fs::TempDir::new()?;
+fn no_arguments() {
+    let context = TestContext::new_with_versions(&[]).with_ignore_cache_dir();
 
-    uv_snapshot!(Command::new(get_bin())
-        .arg("pip")
-        .arg("uninstall")
-        .current_dir(&temp_dir), @r###"
+    uv_snapshot!(context.filters(), context.pip_uninstall(), @r###"
     success: false
     exit_code: 2
     ----- stdout -----
@@ -32,8 +29,6 @@ fn no_arguments() -> Result<()> {
     For more information, try '--help'.
     "###
     );
-
-    Ok(())
 }
 
 #[test]