add test for toolchain uninstallation

Author: Darunada

tests/suite/cli_self_upd.rs

@@ -153,6 +153,22 @@ fn uninstall_deletes_bins() {
     });
 }
 
+#[test]
+fn uninstall_deletes_installed_toolchains() {
+    setup_installed(&|config| {
+        let path = config.customdir.join("custom-1");
+        let path = path.to_string_lossy();
+        config.expect_ok(&["rustup", "toolchain", "link", "custom", &path]);
+        config.expect_ok_contains(&["rustup", "self", "uninstall", "-y"],
+                                  "",
+                                  r"
+info: uninstalling toolchain 'custom'
+info: toolchain 'custom' uninstalled
+");
+        assert!(!&config.rustupdir.join("toolchains").exists())
+    });
+}
+
 #[test]
 fn uninstall_works_if_some_bins_dont_exist() {
     setup_empty_installed(&|config| {
@@ -278,13 +294,13 @@ fn update_exact() {
     let expected_output = "info: checking for self-update
 info: downloading self-update
 "
-    .to_string();
+        .to_string();
 
     update_setup(&|config, _| {
         config.expect_ok(&["rustup-init", "-y", "--no-modify-path"]);
         config.expect_ok_ex(
             &["rustup", "self", "update"],
-            &format!("  rustup updated - {version} (from {version})\n\n",),
+            &format!("  rustup updated - {version} (from {version})\n\n", ),
             &expected_output,
         )
     });