diff --git a/Cargo.lock b/Cargo.lock
index d161762..9ffe78a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -536,6 +536,12 @@ dependencies = [
  "litrs",
 ]
 
+[[package]]
+name = "downcast"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1435fa1053d8b2fbbe9be7e97eca7f33d37b28409959813daefc1446a14247f1"
+
 [[package]]
 name = "dyn-clone"
 version = "1.0.20"
@@ -591,6 +597,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fragile"
+version = "2.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28dd6caf6059519a65843af8fe2a3ae298b14b80179855aeb4adc2c1934ee619"
+
 [[package]]
 name = "generic-array"
 version = "0.14.7"
@@ -651,6 +663,7 @@ dependencies = [
  "indoc",
  "log",
  "log4rs",
+ "mockall",
  "rpassword",
  "secrecy",
  "serde",
@@ -903,6 +916,12 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "lazy_static"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
+
 [[package]]
 name = "libc"
 version = "0.2.175"
@@ -1024,6 +1043,33 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dce6dd36094cac388f119d2e9dc82dc730ef91c32a6222170d630e5414b956e6"
 
+[[package]]
+name = "mockall"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43766c2b5203b10de348ffe19f7e54564b64f3d6018ff7648d1e2d6d3a0f0a48"
+dependencies = [
+ "cfg-if",
+ "downcast",
+ "fragile",
+ "lazy_static",
+ "mockall_derive",
+ "predicates",
+ "predicates-tree",
+]
+
+[[package]]
+name = "mockall_derive"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "af7cbce79ec385a1d4f54baa90a76401eb15d9cab93685f62e7e9f942aa00ae2"
+dependencies = [
+ "cfg-if",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "num-conv"
 version = "0.1.0"
@@ -1181,6 +1227,32 @@ dependencies = [
  "zerocopy",
 ]
 
+[[package]]
+name = "predicates"
+version = "3.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a5d19ee57562043d37e82899fade9a22ebab7be9cef5026b07fda9cdd4293573"
+dependencies = [
+ "anstyle",
+ "predicates-core",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "727e462b119fe9c93fd0eb1429a5f7647394014cf3c04ab2c0350eeb09095ffa"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72dd2d6d381dfb73a193c7fca536518d7caee39fc8503f74e7dc0be0531b425c"
+dependencies = [
+ "predicates-core",
+ "termtree",
+]
+
 [[package]]
 name = "proc-macro-error-attr2"
 version = "2.0.0"
@@ -1641,6 +1713,12 @@ dependencies = [
  "windows-sys 0.60.2",
 ]
 
+[[package]]
+name = "termtree"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f50febec83f5ee1df3015341d8bd429f2d1cc62bcba7ea2076759d315084683"
+
 [[package]]
 name = "thiserror"
 version = "2.0.16"
diff --git a/Cargo.toml b/Cargo.toml
index ca7c7e1..0b1f70e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -40,10 +40,21 @@ dialoguer = "0.12.0"
 chrono = "0.4.42"
 indoc = "2.0.6"
 
+[dev-dependencies]
+mockall = "0.12.1"
+
 [[bin]]
 bench = false
 name = "gman"
 
+[[test]]
+name = "mod_tests"
+path = "tests/providers/mod_tests.rs"
+
+[[test]]
+name = "local_tests"
+path = "tests/providers/local_tests.rs"
+
 [profile.release]
 lto = true
 strip = true
diff --git a/src/config.rs b/src/config.rs
index 5d2f29d..7b5e80b 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -7,7 +7,7 @@ use std::borrow::Cow;
 use std::path::PathBuf;
 use validator::{Validate, ValidationError};
 
-#[derive(Debug, Clone, Validate, Serialize, Deserialize)]
+#[derive(Debug, Clone, Validate, Serialize, Deserialize, PartialEq, Eq)]
 #[validate(schema(function = "flags_or_none", skip_on_field_errors = false))]
 pub struct RunConfig {
     #[validate(required)]
@@ -51,7 +51,7 @@ fn flags_or_none(run_config: &RunConfig) -> Result<(), ValidationError> {
 }
 
 #[serde_as]
-#[derive(Debug, Clone, Validate, Serialize, Deserialize)]
+#[derive(Debug, Clone, Validate, Serialize, Deserialize, PartialEq, Eq)]
 pub struct Config {
     #[serde_as(as = "DisplayFromStr")]
     pub provider: SupportedProvider,
diff --git a/tests/config_tests.rs b/tests/config_tests.rs
new file mode 100644
index 0000000..0121625
--- /dev/null
+++ b/tests/config_tests.rs
@@ -0,0 +1,166 @@
+#[cfg(test)]
+mod tests {
+	use gman::config::{Config, RunConfig};
+	use gman::providers::local::LocalProvider;
+	use gman::providers::SupportedProvider;
+
+	use validator::Validate;
+
+	#[test]
+	fn test_run_config_valid() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: None,
+			flag_position: None,
+			arg_format: None,
+		};
+		assert!(run_config.validate().is_ok());
+	}
+
+	#[test]
+	fn test_run_config_missing_name() {
+		let run_config = RunConfig {
+			name: None,
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: None,
+			flag_position: None,
+			arg_format: None,
+		};
+		assert!(run_config.validate().is_err());
+	}
+
+	#[test]
+	fn test_run_config_missing_secrets() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: None,
+			flag: None,
+			flag_position: None,
+			arg_format: None,
+		};
+		assert!(run_config.validate().is_err());
+	}
+
+	#[test]
+	fn test_run_config_invalid_flag_position() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: Some("--test-flag".to_string()),
+			flag_position: Some(0),
+			arg_format: Some("{key}={value}".to_string()),
+		};
+		assert!(run_config.validate().is_err());
+	}
+
+	#[test]
+	fn test_run_config_flags_or_none_all_some() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: Some("--test-flag".to_string()),
+			flag_position: Some(1),
+			arg_format: Some("{key}={value}".to_string()),
+		};
+		assert!(run_config.validate().is_ok());
+	}
+
+	#[test]
+	fn test_run_config_flags_or_none_all_none() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: None,
+			flag_position: None,
+			arg_format: None,
+		};
+		assert!(run_config.validate().is_ok());
+	}
+
+	#[test]
+	fn test_run_config_flags_or_none_partial_some() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: Some("--test-flag".to_string()),
+			flag_position: None,
+			arg_format: None,
+		};
+		assert!(run_config.validate().is_err());
+	}
+
+	#[test]
+	fn test_run_config_flags_or_none_missing_placeholder() {
+		let run_config = RunConfig {
+			name: Some("test".to_string()),
+			secrets: Some(vec!["secret1".to_string()]),
+			flag: Some("--test-flag".to_string()),
+			flag_position: Some(1),
+			arg_format: Some("key=value".to_string()),
+		};
+		assert!(run_config.validate().is_err());
+	}
+
+	#[test]
+	fn test_config_valid() {
+		let config = Config {
+			provider: SupportedProvider::Local(LocalProvider),
+			password_file: None,
+			git_branch: None,
+			git_remote_url: None,
+			git_user_name: None,
+			git_user_email: Some("test@example.com".to_string()),
+			git_executable: None,
+			run_configs: None,
+		};
+		assert!(config.validate().is_ok());
+	}
+
+	#[test]
+	fn test_config_invalid_email() {
+		let config = Config {
+			provider: SupportedProvider::Local(LocalProvider),
+			password_file: None,
+			git_branch: None,
+			git_remote_url: None,
+			git_user_name: None,
+			git_user_email: Some("test".to_string()),
+			git_executable: None,
+			run_configs: None,
+		};
+		assert!(config.validate().is_err());
+	}
+
+	#[test]
+	fn test_config_default() {
+		let config = Config::default();
+		assert_eq!(
+			config.provider,
+			SupportedProvider::Local(LocalProvider)
+		);
+		assert_eq!(config.git_branch, Some("main".to_string()));
+	}
+
+	#[test]
+	fn test_config_extract_provider() {
+		let config = Config::default();
+		let provider = config.extract_provider();
+		assert_eq!(provider.name(), "LocalProvider");
+	}
+
+	#[test]
+	fn test_config_local_provider_password_file() {
+		let path = Config::local_provider_password_file();
+		let expected_path = dirs::home_dir().map(|p| p.join(".gman_password"));
+		if let Some(p) = &expected_path {
+			if !p.exists() {
+				assert_eq!(path, None);
+			} else {
+				assert_eq!(path, expected_path);
+			}
+		} else {
+			assert_eq!(path, None);
+		}
+	}
+}
\ No newline at end of file
diff --git a/tests/providers/local_tests.rs b/tests/providers/local_tests.rs
new file mode 100644
index 0000000..9a89e2e
--- /dev/null
+++ b/tests/providers/local_tests.rs
@@ -0,0 +1,12 @@
+use gman::providers::local::LocalProviderConfig;
+
+
+#[test]
+fn test_local_provider_config_default() {
+    let config = LocalProviderConfig::default();
+    let expected_path = dirs::home_dir()
+        .map(|p| p.join(".gman_vault"))
+        .and_then(|p| p.to_str().map(|s| s.to_string()))
+        .unwrap_or_else(|| ".gman_vault".into());
+    assert_eq!(config.vault_path, expected_path);
+}
diff --git a/tests/providers/mod_tests.rs b/tests/providers/mod_tests.rs
new file mode 100644
index 0000000..18bb52e
--- /dev/null
+++ b/tests/providers/mod_tests.rs
@@ -0,0 +1,36 @@
+use gman::providers::{ParseProviderError, SupportedProvider};
+use gman::providers::local::LocalProvider;
+use std::str::FromStr;
+
+#[test]
+fn test_supported_provider_from_str_valid() {
+    assert_eq!(
+        SupportedProvider::from_str("local").unwrap(),
+        SupportedProvider::Local(LocalProvider)
+    );
+    assert_eq!(
+        SupportedProvider::from_str("LOCAL").unwrap(),
+        SupportedProvider::Local(LocalProvider)
+    );
+}
+
+#[test]
+fn test_supported_provider_from_str_invalid() {
+    let err = SupportedProvider::from_str("invalid").unwrap_err();
+    assert_eq!(
+        err.to_string(),
+        "unsupported provider 'invalid'"
+    );
+}
+
+#[test]
+fn test_supported_provider_display() {
+    let provider = SupportedProvider::Local(LocalProvider);
+    assert_eq!(provider.to_string(), "local");
+}
+
+#[test]
+fn test_parse_provider_error_display() {
+    let err = ParseProviderError::Unsupported("test".to_string());
+    assert_eq!(err.to_string(), "unsupported provider 'test'");
+}