mixnode: Add tests for upgrade to 10.0.2

Add a positive and a negative unit test for upgrading to 10.0.2.

Signed-off-by: Bogdan-Ștefan Neacșu <bogdan@nymtech.net>

Cargo.lock

@@ -1830,6 +1830,7 @@ dependencies = [
  "rocket",
  "rocket_contrib",
  "serde",
+ "serial_test",
  "tokio",
  "tokio-util",
  "toml",
@@ -2839,6 +2840,28 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "serial_test"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0bccbcf40c8938196944a3da0e133e031a33f4d6b72db3bda3cc556e361905d"
+dependencies = [
+ "lazy_static",
+ "parking_lot",
+ "serial_test_derive",
+]
+
+[[package]]
+name = "serial_test_derive"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2acd6defeddb41eb60bb468f8825d0cfd0c2a76bc03bfd235b6a1dc4f6a1ad5"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "sha-1"
 version = "0.8.2"

mixnode/Cargo.toml

@@ -38,3 +38,6 @@ pemstore = { path = "../common/pemstore" }
 topology = { path = "../common/topology" }
 validator-client = { path = "../common/client-libs/validator-client" }
 version-checker = { path = "../common/version-checker" }
+
+[dev-dependencies]
+serial_test = "0.5"

mixnode/src/commands/upgrade.rs

@@ -447,3 +447,39 @@ pub fn execute(matches: &ArgMatches) {
     // here be upgrade path to 0.9.X and beyond based on version number from config
     do_upgrade(existing_config, matches, package_version)
 }
+
+#[cfg(test)]
+mod upgrade_tests {
+    use super::*;
+    use serial_test::serial;
+
+    #[test]
+    #[serial]
+    fn test_patch_0_10_2_upgrade() {
+        let config = Config::default().with_id("0").with_custom_version("0.10.1");
+        let matches = ArgMatches::default();
+        let old_version = Version::new(0, 10, 1);
+        let new_version = Version::new(0, 10, 2);
+        let new_config =
+            patch_0_10_2_upgrade(config, &matches, &old_version, &new_version).unwrap();
+        assert_eq!(new_config.get_version(), "0.10.2");
+    }
+
+    #[test]
+    #[serial]
+    fn test_patch_0_10_2_upgrade_error() {
+        let config = Config::default().with_id("0").with_custom_version("0.10.1");
+        let matches = ArgMatches::default();
+        let old_version = Version::new(0, 10, 1);
+        let new_version = Version::new(0, 10, 2);
+        config.save_to_file(None).unwrap();
+        let config_file = config.get_config_file_save_location();
+        let initial_perms = fs::metadata(config_file.clone()).unwrap().permissions();
+        let mut new_perms = initial_perms.clone();
+        new_perms.set_readonly(true);
+        fs::set_permissions(config_file.clone(), new_perms).unwrap();
+        let ret = patch_0_10_2_upgrade(config, &matches, &old_version, &new_version);
+        fs::set_permissions(config_file, initial_perms).unwrap();
+        assert!(ret.is_err());
+    }
+}