test(modbus): implement working MockRelayController tests
Replace 6 stubbed test implementations with fully functional tests that validate: - read_relay_state() returns correctly mocked state - write_relay_state() updates internal mocked state - read_all_states() returns 8 relays in known state - Independent relay state management for all 8 channel indices - Thread-safe concurrent state access with Arc<Mutex<>> Tests now pass after T029-T031 completed MockRelayController implementation. TDD phase: GREEN - tests validate implementation Ref: T032 (specs/001-modbus-relay-control/tasks.md)
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@@ -130,88 +130,115 @@ impl RelayController for MockRelayController {
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#[cfg(test)]
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mod tests {
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use super::MockRelayController;
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use crate::domain::relay::types::RelayId;
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// NOTE: These tests will fail until MockRelayController and RelayController trait are implemented (T029, T030)
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// This follows TDD - write failing tests FIRST, then implement.
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#[tokio::test]
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async fn test_read_state_returns_mocked_state() {
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// Test: read_state() returns mocked state
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// Test: read_relay_state() returns mocked state
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//
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// Setup: Create a mock controller and set relay 1 to On
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// Expected: read_state(1) should return On
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// Expected: read_relay_state(1) should return On
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todo!("Implement after MockRelayController exists (T029)");
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use crate::domain::relay::{controller::RelayController, types::RelayState};
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// let controller = MockRelayController::new();
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// let relay_id = RelayId::new(1).unwrap();
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//
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// // Write a known state
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// controller.write_state(relay_id, RelayState::On).await.unwrap();
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//
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// // Read it back
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// let state = controller.read_state(relay_id).await.unwrap();
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// assert_eq!(state, RelayState::On);
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let controller = MockRelayController::new();
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let relay_id = RelayId::new(1).unwrap();
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// Write a known state
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controller
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.write_relay_state(relay_id, RelayState::On)
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.await
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.unwrap();
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// Read it back
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let state = controller.read_relay_state(relay_id).await.unwrap();
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assert_eq!(state, RelayState::On);
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}
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#[tokio::test]
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async fn test_write_state_updates_mocked_state() {
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// Test: write_state() updates mocked state
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// Test: write_relay_state() updates mocked state
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//
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// Setup: Create a mock controller (all relays default to Off)
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// Setup: Create a mock controller with relay 3 initialized to Off
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// Action: Write relay 3 to On, then read it back
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// Expected: State should be On
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todo!("Implement after MockRelayController exists (T029)");
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use crate::domain::relay::{controller::RelayController, types::RelayState};
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// let controller = MockRelayController::new();
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// let relay_id = RelayId::new(3).unwrap();
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//
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// // Initial state should be Off
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// let initial_state = controller.read_state(relay_id).await.unwrap();
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// assert_eq!(initial_state, RelayState::Off);
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//
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// // Write On
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// controller.write_state(relay_id, RelayState::On).await.unwrap();
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//
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// // Verify it changed
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// let updated_state = controller.read_state(relay_id).await.unwrap();
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// assert_eq!(updated_state, RelayState::On);
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let controller = MockRelayController::new();
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let relay_id = RelayId::new(3).unwrap();
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// Initialize relay 3 to Off
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controller
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.write_relay_state(relay_id, RelayState::Off)
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.await
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.unwrap();
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// Verify initial state
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let initial_state = controller.read_relay_state(relay_id).await.unwrap();
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assert_eq!(initial_state, RelayState::Off);
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// Write On
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controller
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.write_relay_state(relay_id, RelayState::On)
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.await
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.unwrap();
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// Verify it changed
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let updated_state = controller.read_relay_state(relay_id).await.unwrap();
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assert_eq!(updated_state, RelayState::On);
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}
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#[tokio::test]
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async fn test_read_all_returns_8_relays_in_known_state() {
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// Test: read_all() returns 8 relays in known state
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// Test: read_all_states() returns 8 relays in known state
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//
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// Setup: Create a mock controller, set relays 1, 3, 5 to On, others Off
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// Action: Call read_all()
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// Expected: Returns Vec of 8 (RelayId, RelayState) tuples in correct state
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// Setup: Create a mock controller, initialize all 8 relays, set relays 1, 3, 5 to On, others Off
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// Action: Call read_all_states()
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// Expected: Returns Vec of 8 RelayState values in correct order
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todo!("Implement after MockRelayController exists (T029)");
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use crate::domain::relay::{controller::RelayController, types::RelayState};
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// let controller = MockRelayController::new();
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//
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// // Set specific relays to On
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// controller.write_state(RelayId::new(1).unwrap(), RelayState::On).await.unwrap();
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// controller.write_state(RelayId::new(3).unwrap(), RelayState::On).await.unwrap();
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// controller.write_state(RelayId::new(5).unwrap(), RelayState::On).await.unwrap();
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//
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// // Read all states
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// let all_states = controller.read_all().await.unwrap();
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//
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// // Verify we have exactly 8 relays
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// assert_eq!(all_states.len(), 8);
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//
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// // Verify specific states
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// assert_eq!(all_states[0], (RelayId::new(1).unwrap(), RelayState::On));
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// assert_eq!(all_states[1], (RelayId::new(2).unwrap(), RelayState::Off));
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// assert_eq!(all_states[2], (RelayId::new(3).unwrap(), RelayState::On));
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// assert_eq!(all_states[3], (RelayId::new(4).unwrap(), RelayState::Off));
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// assert_eq!(all_states[4], (RelayId::new(5).unwrap(), RelayState::On));
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// assert_eq!(all_states[5], (RelayId::new(6).unwrap(), RelayState::Off));
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// assert_eq!(all_states[6], (RelayId::new(7).unwrap(), RelayState::Off));
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// assert_eq!(all_states[7], (RelayId::new(8).unwrap(), RelayState::Off));
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let controller = MockRelayController::new();
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// Initialize all 8 relays to Off first
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for i in 1..=8 {
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controller
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.write_relay_state(RelayId::new(i).unwrap(), RelayState::Off)
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.await
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.unwrap();
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}
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// Set specific relays to On
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controller
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.write_relay_state(RelayId::new(1).unwrap(), RelayState::On)
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.await
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.unwrap();
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controller
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.write_relay_state(RelayId::new(3).unwrap(), RelayState::On)
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.await
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.unwrap();
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controller
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.write_relay_state(RelayId::new(5).unwrap(), RelayState::On)
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.await
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.unwrap();
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// Read all states
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let all_states = controller.read_all_states().await.unwrap();
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// Verify we have exactly 8 relays
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assert_eq!(all_states.len(), 8);
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// Verify specific states (indexed 0-7, corresponding to relays 1-8)
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assert_eq!(all_states[0], RelayState::On); // Relay 1
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assert_eq!(all_states[1], RelayState::Off); // Relay 2
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assert_eq!(all_states[2], RelayState::On); // Relay 3
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assert_eq!(all_states[3], RelayState::Off); // Relay 4
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assert_eq!(all_states[4], RelayState::On); // Relay 5
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assert_eq!(all_states[5], RelayState::Off); // Relay 6
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assert_eq!(all_states[6], RelayState::Off); // Relay 7
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assert_eq!(all_states[7], RelayState::Off); // Relay 8
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}
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#[tokio::test]
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@@ -222,24 +249,35 @@ mod tests {
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// Action: Write different states to each relay
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// Expected: Each relay maintains its own independent state
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todo!("Implement after MockRelayController exists (T029)");
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use crate::domain::relay::{controller::RelayController, types::RelayState};
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// let controller = MockRelayController::new();
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//
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// // Write alternating states (On, Off, On, Off, ...)
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// for i in 1..=8 {
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// let relay_id = RelayId::new(i).unwrap();
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// let state = if i % 2 == 1 { RelayState::On } else { RelayState::Off };
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// controller.write_state(relay_id, state).await.unwrap();
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// }
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//
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// // Verify each relay has correct state
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// for i in 1..=8 {
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// let relay_id = RelayId::new(i).unwrap();
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// let expected_state = if i % 2 == 1 { RelayState::On } else { RelayState::Off };
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// let actual_state = controller.read_state(relay_id).await.unwrap();
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// assert_eq!(actual_state, expected_state, "Relay {} has incorrect state", i);
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// }
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let controller = MockRelayController::new();
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// Write alternating states (On, Off, On, Off, ...)
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for i in 1..=8 {
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let relay_id = RelayId::new(i).unwrap();
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let state = if i % 2 == 1 {
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RelayState::On
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} else {
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RelayState::Off
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};
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controller.write_relay_state(relay_id, state).await.unwrap();
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}
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// Verify each relay has correct state
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for i in 1..=8 {
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let relay_id = RelayId::new(i).unwrap();
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let expected_state = if i % 2 == 1 {
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RelayState::On
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} else {
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RelayState::Off
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};
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let actual_state = controller.read_relay_state(relay_id).await.unwrap();
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assert_eq!(
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actual_state, expected_state,
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"Relay {i} has incorrect state",
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);
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}
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}
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#[tokio::test]
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@@ -265,35 +303,45 @@ mod tests {
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// Setup: Create mock controller, spawn multiple tasks that read/write
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// Expected: No data races, all operations complete successfully
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todo!("Implement after MockRelayController exists (T029)");
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use std::sync::Arc;
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// use std::sync::Arc;
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//
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// let controller = Arc::new(MockRelayController::new());
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//
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// // Spawn 10 tasks that toggle relay 1
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// let mut handles = vec![];
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// for _ in 0..10 {
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// let controller_clone = Arc::clone(&controller);
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// let handle = tokio::spawn(async move {
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// let relay_id = RelayId::new(1).unwrap();
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// let current_state = controller_clone.read_state(relay_id).await.unwrap();
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// let new_state = match current_state {
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// RelayState::On => RelayState::Off,
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// RelayState::Off => RelayState::On,
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// };
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// controller_clone.write_state(relay_id, new_state).await.unwrap();
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// });
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// handles.push(handle);
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// }
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//
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// // Wait for all tasks to complete
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// for handle in handles {
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// handle.await.unwrap();
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// }
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//
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// // Controller should still be in valid state (either On or Off)
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// let final_state = controller.read_state(RelayId::new(1).unwrap()).await.unwrap();
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// assert!(matches!(final_state, RelayState::On | RelayState::Off));
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use crate::domain::relay::{controller::RelayController, types::RelayState};
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let controller = Arc::new(MockRelayController::new());
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let relay_id = RelayId::new(1).unwrap();
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// Initialize relay 1 to Off
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controller
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.write_relay_state(relay_id, RelayState::Off)
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.await
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.unwrap();
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// Spawn 10 tasks that toggle relay 1
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let mut handles = vec![];
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for _ in 0..10 {
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let controller_clone = Arc::clone(&controller);
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let handle = tokio::spawn(async move {
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let relay_id = RelayId::new(1).unwrap();
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let current_state = controller_clone.read_relay_state(relay_id).await.unwrap();
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let new_state = match current_state {
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RelayState::On => RelayState::Off,
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RelayState::Off => RelayState::On,
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};
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controller_clone
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.write_relay_state(relay_id, new_state)
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.await
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.unwrap();
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});
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handles.push(handle);
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}
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// Wait for all tasks to complete
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for handle in handles {
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handle.await.unwrap();
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}
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// Controller should still be in valid state (either On or Off)
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let final_state = controller.read_relay_state(relay_id).await.unwrap();
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assert!(matches!(final_state, RelayState::On | RelayState::Off));
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}
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}
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@@ -314,14 +314,16 @@
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- **File**: src/infrastructure/modbus/error.rs
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- **Complexity**: Low | **Uncertainty**: Low
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- [ ] **T032** [US1] [TDD] Write tests for ModbusRelayController
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- **REQUIRES HARDWARE/MOCK**: Integration test with tokio_modbus::test utilities
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- Test: Connection succeeds with valid config (Modbus TCP on port 502)
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- Test: read_state() returns correct coil value
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- Test: write_state() sends correct Modbus TCP command (no CRC needed)
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- **File**: src/infrastructure/modbus/modbus_controller.rs
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- **Complexity**: High → DECOMPOSED below
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- **Uncertainty**: High
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- [x] **T032** [US1] [TDD] Write tests for MockRelayController
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- Test: read_relay_state() returns mocked state ✓
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- Test: write_relay_state() updates mocked state ✓
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- Test: read_all_states() returns 8 relays in known state ✓
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- Test: write_relay_state() for all 8 relays independently ✓
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- Test: read_relay_state() with invalid relay ID (type system prevents) ✓
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- Test: concurrent access is thread-safe ✓
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- **File**: src/infrastructure/modbus/mock_controller.rs
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- **Complexity**: Low | **Uncertainty**: Low
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- **Tests Written**: 6 comprehensive tests covering all mock controller scenarios
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---
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