Add tests for rpc_secret_file

src/util/Cargo.toml

@@ -47,6 +47,8 @@ hyper = "0.14"
 
 opentelemetry = { version = "0.17", features = [ "rt-tokio", "metrics", "trace" ] }
 
+[dev-dependencies]
+mktemp = "0.4"
 
 [features]
 k2v = []

src/util/config.rs

@@ -261,3 +261,123 @@ where
 
 	deserializer.deserialize_any(OptionVisitor)
 }
+
+#[cfg(test)]
+mod tests {
+	use crate::error::Error;
+	use std::fs::File;
+	use std::io::Write;
+
+	#[test]
+	fn test_rpc_secret_is_required() -> Result<(), Error> {
+		let path1 = mktemp::Temp::new_file()?;
+		let mut file1 = File::create(path1.as_path())?;
+		writeln!(
+			file1,
+			r#"
+			metadata_dir = "/tmp/garage/meta"
+			data_dir = "/tmp/garage/data"
+			replication_mode = "3"
+			rpc_bind_addr = "[::]:3901"
+		
+			[s3_api]
+			s3_region = "garage"
+			api_bind_addr = "[::]:3900"
+			"#
+		)?;
+		assert_eq!(
+			"either `rpc_secret` or `rpc_secret_file` needs to be set",
+			super::read_config(path1.to_path_buf())
+				.unwrap_err()
+				.to_string()
+		);
+		drop(path1);
+		drop(file1);
+
+		let path2 = mktemp::Temp::new_file()?;
+		let mut file2 = File::create(path2.as_path())?;
+		writeln!(
+			file2,
+			r#"
+			metadata_dir = "/tmp/garage/meta"
+			data_dir = "/tmp/garage/data"
+			replication_mode = "3"
+			rpc_bind_addr = "[::]:3901"
+			rpc_secret = "foo"
+
+			[s3_api]
+			s3_region = "garage"
+			api_bind_addr = "[::]:3900"
+			"#
+		)?;
+
+		let config = super::read_config(path2.to_path_buf())?;
+		assert_eq!("foo", config.rpc_secret.unwrap());
+		drop(path2);
+		drop(file2);
+
+		Ok(())
+	}
+
+	#[test]
+	fn test_rpc_secret_file_works() -> Result<(), Error> {
+		let path_secret = mktemp::Temp::new_file()?;
+		let mut file_secret = File::create(path_secret.as_path())?;
+		writeln!(file_secret, "foo")?;
+		drop(file_secret);
+
+		let path_config = mktemp::Temp::new_file()?;
+		let mut file_config = File::create(path_config.as_path())?;
+		let path_secret_path = path_secret.as_path().display();
+		writeln!(
+			file_config,
+			r#"
+			metadata_dir = "/tmp/garage/meta"
+			data_dir = "/tmp/garage/data"
+			replication_mode = "3"
+			rpc_bind_addr = "[::]:3901"
+			rpc_secret_file = "{path_secret_path}"
+		
+			[s3_api]
+			s3_region = "garage"
+			api_bind_addr = "[::]:3900"
+			"#
+		)?;
+		let config = super::read_config(path_config.to_path_buf())?;
+		assert_eq!("foo", config.rpc_secret.unwrap());
+		drop(path_config);
+		drop(path_secret);
+		drop(file_config);
+		Ok(())
+	}
+
+	#[test]
+	fn test_rcp_secret_and_rpc_secret_file_cannot_be_set_both() -> Result<(), Error> {
+		let path_config = mktemp::Temp::new_file()?;
+		let mut file_config = File::create(path_config.as_path())?;
+		writeln!(
+			file_config,
+			r#"
+			metadata_dir = "/tmp/garage/meta"
+			data_dir = "/tmp/garage/data"
+			replication_mode = "3"
+			rpc_bind_addr = "[::]:3901"
+			rpc_secret= "dummy"
+			rpc_secret_file = "dummy"
+		
+			[s3_api]
+			s3_region = "garage"
+			api_bind_addr = "[::]:3900"
+			"#
+		)?;
+		assert_eq!(
+			"only one of `rpc_secret` and `rpc_secret_file` can be set",
+			super::read_config(path_config.to_path_buf())
+				.unwrap_err()
+				.to_string()
+		);
+		drop(path_config);
+		drop(file_config);
+		Ok(())
+	}
+}