test: Added tests for the Azure Key Vault provider

tests/providers/azure_key_vault_tests.rs

@@ -0,0 +1,71 @@
+use gman::config::{Config, ProviderConfig};
+use gman::providers::azure_key_vault::AzureKeyVaultProvider;
+use gman::providers::{SecretProvider, SupportedProvider};
+use pretty_assertions::{assert_eq, assert_str_eq};
+use validator::Validate;
+
+#[test]
+fn test_azure_provider_name() {
+    let provider = AzureKeyVaultProvider {
+        vault_name: Some("my-vault".into()),
+    };
+    assert_str_eq!(provider.name(), "AzureKeyVaultProvider");
+}
+
+#[test]
+fn test_azure_provider_validation_ok() {
+    let provider = AzureKeyVaultProvider {
+        vault_name: Some("vault-prod".into()),
+    };
+    assert!(provider.validate().is_ok());
+}
+
+#[test]
+fn test_azure_provider_missing_vault_name() {
+    let provider = AzureKeyVaultProvider { vault_name: None };
+    assert!(provider.validate().is_err());
+}
+
+#[test]
+fn test_supported_provider_display_and_validate() {
+    let sp = SupportedProvider::AzureKeyVault {
+        provider_def: AzureKeyVaultProvider {
+            vault_name: Some("kv-demo".into()),
+        },
+    };
+    assert!(sp.validate().is_ok());
+    assert_eq!(sp.to_string(), "azure_key_vault");
+}
+
+#[test]
+fn test_provider_config_with_azure_deserialize_and_extract() {
+    // Minimal ProviderConfig YAML using the azure_key_vault variant
+    let yaml = r#"---
+name: azure
+type: azure_key_vault
+vault_name: my-vault
+"#;
+
+    let pc: ProviderConfig = serde_yaml::from_str(yaml).expect("valid provider config yaml");
+    assert!(pc.validate().is_ok());
+
+    let mut pc_owned = pc.clone();
+    let provider: &mut dyn SecretProvider = pc_owned.extract_provider();
+    assert_eq!(provider.name(), "AzureKeyVaultProvider");
+
+    // Round-trip through Config with default_provider
+    let cfg_yaml = r#"---
+default_provider: azure
+providers:
+  - name: azure
+    type: azure_key_vault
+    vault_name: my-vault
+"#;
+    let cfg: Config = serde_yaml::from_str(cfg_yaml).expect("valid config yaml");
+    assert!(cfg.validate().is_ok());
+
+    let extracted = cfg
+        .extract_provider_config(None)
+        .expect("should find default provider");
+    assert_eq!(extracted.name.as_deref(), Some("azure"));
+}