test(install): Added test case for prefixed v in version

Author: Pyr0de

tests/testsuite/install.rs

@@ -2899,3 +2899,17 @@ fn dry_run_remove_orphan() {
     // Ensure server is still installed after the dry run
     assert_has_installed_exe(paths::cargo_home(), "server");
 }
+
+#[cargo_test]
+fn prefixed_v_in_version() {
+    pkg("foo", "0.0.1");
+    cargo_process("install foo@v0.0.1")
+        .with_status(1)
+        .with_stderr_data(str![[r#"
+[ERROR] invalid value 'foo@v0.0.1' for '[CRATE[@<VER>]]...': unexpected character 'v' while parsing major version number
+
+For more information, try '--help'.
+
+"#]])
+        .run();
+}