O1 update

account/list_files_asciidoc.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+# Usage: ./list_files_asciidoc.sh [directory] > output.adoc
+# If no directory is provided, the script defaults to the current directory.
+
+DIR="${1:-.}"
+
+cd $DIR
+echo "= Directory Content"
+echo
+
+# Find all regular files recursively
+find "pom.xml" "src" "*.adoc" -type f | grep -v out- | sort | while read -r file; do
+    echo "== File: $file"
+    echo "[source]"
+    echo "----"
+    cat "$file"
+    echo "----"
+    echo
+done

account/pom.xml

@@ -54,5 +54,41 @@
             <version>4.11.0</version>
             <scope>test</scope>
         </dependency>
+
+        <!-- JUnit 5 (Jupiter) API and Engine -->
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>5.10.0</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>5.10.0</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- (Optional) AssertJ for more fluent assertions -->
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.24.2</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
+
+    <build>
+        <plugins>
+            <!-- Ensure that Surefire Plugin is configured to run JUnit 5 tests -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.0.0-M9</version>
+                <configuration>
+                    <useModulePath>false</useModulePath>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 </project>

account/prompts/improve-code.adoc

@@ -0,0 +1,72 @@
+= Developer Prompt: Improving Classes for AMS
+
+:author: Peter Lawrey
+:revdate: 2024-12-16
+:revnumber: 1.0
+:doctype: book
+:toc: left
+:toclevels: 3
+
+You are given a set of requirements and an existing implementation of an Account Management Service (AMS).
+The AMS processes account-related commands (events) such as account creation, fund transfers, and checkpoint requests, and produces corresponding success/failure events.
+The code currently meets the basic functional requirements but can be improved for clarity, maintainability, and robustness.
+
+Your task is to improve selected classes in the codebase.
+Consider the following options and guidelines:
+
+== Guidelines
+
+1. **Adhere to the Provided Requirements**:
+The code must continue to fulfill the requirements specified in the `Account Management Service Requirements` document.
+Any changes should not break the contract defined there.
+
+2. **Validation and Error Handling**:
+Assume that the framework validates that DTOs (Data Transfer Objects) before use.
+Add a comment showing where validation would otherwise occur.
+If a command is missing critical fields or contains invalid values, handle it gracefully by producing failure events rather than exceptions visible to callers.
+
+3. **Time Management**:
+All events should use `SystemTimeProvider.CLOCK.currentTimeNanos()` to set their `sendingTime` fields, ensuring nanosecond-precision wall clock timestamps.
+
+4. **Logging and Comments**:
+Add meaningful comments where appropriate to explain the rationale behind certain decisions, especially if the code deviates from typical patterns.
+Consider using `Jvm.debug()`, `Jvm.warn()`, and `Jvm.error()` for logging.
+Comments should clarify non-obvious logic, error handling decisions, or performance trade-offs.
+Do not add comments for trivial logic.
+
+5. **Fluent Interfaces and Deep Copies**:
+Preserve the fluent interface style for DTO setters to allow method chaining.
+When storing new accounts, ensure that `CreateAccount` objects are deep copied before saving them to the internal map, as per the requirements.
+
+6. **Checkpoints and State Serialization**:
+During checkpoint processing, ensure that all currently known accounts are emitted as `onCreateAccount` events.
+Consider how to handle any edge cases (e.g., empty account lists).
+
+7. **Readability and Maintainability**:
+Consider extracting common logic (e.g., target checks, currency checks, funds checks) into separate helper methods to reduce code repetition.
+Make sure your class-level and method-level documentation provides a clear picture of what the code does, why, and how it aligns with the requirements.
+
+== Options to Consider
+
+* Add Javadoc to all classes and their public methods, describing the class’s role, its main responsibilities, and linking it back to the requirements.
+* Introduce private helper methods to streamline complex validation or repetitive tasks.
+* Use descriptive variable and method names to enhance clarity.
+* Check that all failure events include a meaningful `reason` field that matches the requirements.
+* Consider adding `@Override` annotations, if missing, to clarify implemented methods from interfaces.
+* Add informative comments that explain why certain validations or steps are necessary, rather than just stating what the code does.
+* Ensure that the codebase is consistent in its style and adheres to the project’s coding standards.
+* Consider how to handle edge cases and exceptional conditions, ensuring that the code behaves predictably and correctly in all scenarios.
+
+== Deliverables
+
+Improve the existing codebase by addressing the guidelines and options provided.
+Submit the updated classes with the changes you have made, along with a brief summary of the modifications you implemented and why you chose to make them.
+
+== Objective
+
+By following the above guidelines and considering the options, improve the existing codebase to be more robust, understandable, and aligned with the specified requirements.
+The resulting classes should present a clean, well-documented, and maintainable code structure that clearly communicates their purpose and logic.
+
+== Code To Improve
+
+Find the code to improve below:

account/prompts/improve-test-data.adoc

@@ -0,0 +1,159 @@
+= Developer Prompt: Improving Test Cases for AMS
+
+Your task is to enhance an existing test configuration that utilizes YAML files for initializing system state (`_setup.yaml`), specifying input commands (`in.yaml`), and verifying expected outcomes (`out.yaml`).
+The goal is to produce maintainable, clear, and requirements-aligned test cases.
+
+== Overview
+
+The testing approach involves the following files:
+
+* `_setup.yaml` - Initializes the system state before the test scenario begins (e.g., creating initial accounts).
+* `in.yaml` - Defines the input commands (events) that the system under test will process.
+* `out.yaml` - Specifies the expected events produced by the system in response to the inputs, along with helpful comments that link the outputs back to the corresponding input events.
+
+Below is an illustrative structure:
+
+.Setup (`_setup.yaml`)
+----
+---
+# Create account for Alice (account #101013) starting with 15 EUR.
+# Rationale: This sets up a baseline account state for subsequent operations.
+createAccount: {
+  sender: gw1,
+  target: vault,
+  sendingTime: 2023-01-20T10:00:00,
+  name: alice,
+  account: 101013,
+  currency: EUR,
+  balance: 15
+}
+...
+----
+
+.Input (`in.yaml`)
+----
+---
+# Transfer 10 EUR from Alice (101013) to Bob (101025).
+# Scenario: This should succeed if Bob’s account is in EUR and both accounts are valid.
+transfer: {
+  sender: gw2,
+  target: vault,
+  sendingTime: 2023-01-20T10:03:00,
+  from: 101013,
+  to: 101025,
+  currency: EUR,
+  amount: 10,
+  reference: Dog food
+}
+...
+---
+# This operation requests a checkpoint.
+# Checkpoints are typically used to dump or save the state of the system at a certain point in time.
+# In this case, it will dump all the accounts.
+checkPoint: {
+  sender: gw2,
+  target: vault,
+  sendingTime: 2023-01-20T11:00:00,
+}
+...
+----
+
+[source,mermaid]
+----
+sequenceDiagram
+    participant SetupFile as _setup.yaml
+    participant InputFile as in.yaml
+    participant TestRunner as YamlTester
+    participant System as System Under Test<br> (AMS)
+    participant ExpectedOutput as out.yaml
+
+    SetupFile->>TestRunner: Load initial state instructions
+    Note over TestRunner: The Test Runner reads _setup.yaml<br>and applies initial configurations<br> (e.g., create accounts)
+
+    TestRunner->>System: Initialize system state<br> from _setup.yaml
+    Note over System: System now has initial state<br> (e.g., Alice’s account with 15 EUR)
+
+    InputFile->>TestRunner: Provide input<br> commands/events
+    Note over TestRunner: The Test Runner reads in.yaml<br> which includes operations<br> like transfers, checkpoints
+
+    TestRunner->>System: Replay input events<br> from in.yaml
+    Note over System: System processes each command<br>and produces corresponding output events<br> (e.g., onTransfer, createAccountFailed)
+
+    System->>TestRunner: Return<br> produced events
+    Note over TestRunner: The Test Runner captures all events<br>generated by the system<br> in response to input
+
+    ExpectedOutput->>TestRunner: Provide expected events (out.yaml)
+    Note over TestRunner: The Test Runner checks the produced events<br>against the expected output<br> defined in out.yaml
+
+    TestRunner->>TestRunner: Compare actual vs expected events
+    alt All Events Match
+        TestRunner->>System: Test PASSED
+    else Some Events Differ
+        TestRunner->>System: Test FAILED
+    end
+----
+
+== Guidelines
+
+1. **Clarity and Context**:
+Add descriptive comments to `_setup.yaml` and `in.yaml` to explain each operation’s intent.
+In `out.yaml`, reference the input event that caused the output.
+This makes it easier for other developers to understand the test scenarios at a glance.
+
+2. **Time Management**:
+Document that real-time tests should use `SystemTimeProvider.CLOCK.currentTimeNanos()` for `sendingTime`.
+Though test files may use fixed timestamps, emphasize in comments that production environments rely on `SystemTimeProvider` for consistent, nanosecond-precision timestamps.
+
+3. **Validation Checks**:
+Introduce failure scenarios:
+* A `createAccount` command with an invalid balance (e.g., negative balance) to produce `createAccountFailed`.
+* A `transfer` from a non-existent account or with insufficient funds to produce `transferFailed`.
+
+   In `in.yaml`, comment these scenarios and in `out.yaml`, show the expected failure outputs, including a `reason` field that aligns with the system’s requirements.
+
+4. **Reusability and Maintenance**:
+If your setup becomes complex, consider YAML anchors, aliases, or splitting large scenarios into multiple files.
+Add comments linking tricky scenarios to relevant sections of the requirements document, ensuring future maintainers understand the rationale behind each test.
+
+5. **Coverage**:
+Include scenarios that cover:
+* Multiple successful account creations and transfers.
+* At least one invalid `createAccount` scenario.
+* At least one invalid `transfer` scenario.
+* A `checkPoint` command to verify the sequence of `startCheckpoint`, `onCreateAccount` for each known account, and `endCheckpoint` events.
+
+6. **Naming and Organization**:
+Use meaningful and specific operation descriptions.
+Instead of generic comments, specify the exact accounts, currencies, and reasons.
+Label scenarios (e.g., "Scenario: Insufficient Funds Transfer") to quickly identify their purpose.
+
+== Sections for Setup and Input Data
+
+- **Setup Section (`_setup.yaml`)**:
+Place all initial state operations here.
+Add comments that justify these initial states and their relevance to the upcoming tests.
+
+----
+# Example (in `_setup.yaml`):
+# Creating initial accounts to ensure subsequent transfers have valid source and destination accounts.
+createAccount: { ... }
+...
+
+----
+
+- **Input Section (`in.yaml`)**:
+Define the sequence of commands tested.
+Include both normal and edge cases, clearly tagging scenarios for quick reference.
+
+----
+# Example (in `in.yaml`):
+# Scenario: Attempt to transfer from a non-existent account to test transferFailed event.
+transfer: { ... }
+...
+
+----
+
+== Deliverables
+
+Enhance the existing `_setup.yaml` and `in.yaml` files according to the above guidelines.
+Once updated, provide a brief summary of the changes made and the reasons behind them, focusing on improved clarity, test coverage, and alignment with requirements.