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feat(#3): Add comprehensive tests and improve Prisma seed script

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- Create comprehensive test suite for PrismaService (10 tests)
- Fix AppController tests with proper PrismaService mocking
- Wrap seed operations in transaction for atomicity
- Replace N+1 pattern with batch operations (createMany)
- Add concurrency warning to seed script
- All tests passing (14/14)
- Build successful
- Test coverage >85%

Fixes #3

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
Jason Woltje
2026-01-28 16:24:25 -06:00
parent 99afde4f99
commit dd747a1d87
4 changed files with 320 additions and 73 deletions
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144
apps/api/prisma/seed.ts
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@@ -11,6 +11,10 @@ const prisma = new PrismaClient();
async function main() {
console.log("Seeding database...");
// IMPORTANT: This seed script should not be run concurrently
// If running in CI/CD, ensure serialization of seed operations
// to prevent race conditions and data corruption
// Create test user
const user = await prisma.user.upsert({
where: { email: "dev@mosaic.local" },
@@ -59,87 +63,89 @@ async function main() {
},
});
// Delete existing seed data for idempotency (avoids duplicates on re-run)
await prisma.task.deleteMany({ where: { workspaceId: workspace.id } });
await prisma.event.deleteMany({ where: { workspaceId: workspace.id } });
await prisma.project.deleteMany({ where: { workspaceId: workspace.id } });
// Use transaction for atomic seed data reset and creation
await prisma.$transaction(async (tx) => {
// Delete existing seed data for idempotency (avoids duplicates on re-run)
await tx.task.deleteMany({ where: { workspaceId: workspace.id } });
await tx.event.deleteMany({ where: { workspaceId: workspace.id } });
await tx.project.deleteMany({ where: { workspaceId: workspace.id } });
// Create sample project
const project = await prisma.project.create({
data: {
workspaceId: workspace.id,
name: "Sample Project",
description: "A sample project for development",
status: ProjectStatus.ACTIVE,
creatorId: user.id,
color: "#3B82F6",
},
});
console.log(`Created project: ${project.name}`);
// Create sample tasks
const tasks = [
{
title: "Set up development environment",
status: TaskStatus.COMPLETED,
priority: TaskPriority.HIGH,
},
{
title: "Review project requirements",
status: TaskStatus.IN_PROGRESS,
priority: TaskPriority.MEDIUM,
},
{
title: "Design database schema",
status: TaskStatus.COMPLETED,
priority: TaskPriority.HIGH,
},
{
title: "Implement NestJS integration",
status: TaskStatus.COMPLETED,
priority: TaskPriority.HIGH,
},
{
title: "Create seed data",
status: TaskStatus.IN_PROGRESS,
priority: TaskPriority.MEDIUM,
},
];
for (const taskData of tasks) {
await prisma.task.create({
// Create sample project
const project = await tx.project.create({
data: {
workspaceId: workspace.id,
name: "Sample Project",
description: "A sample project for development",
status: ProjectStatus.ACTIVE,
creatorId: user.id,
color: "#3B82F6",
},
});
console.log(`Created project: ${project.name}`);
// Create sample tasks
const tasks = [
{
title: "Set up development environment",
status: TaskStatus.COMPLETED,
priority: TaskPriority.HIGH,
},
{
title: "Review project requirements",
status: TaskStatus.IN_PROGRESS,
priority: TaskPriority.MEDIUM,
},
{
title: "Design database schema",
status: TaskStatus.COMPLETED,
priority: TaskPriority.HIGH,
},
{
title: "Implement NestJS integration",
status: TaskStatus.COMPLETED,
priority: TaskPriority.HIGH,
},
{
title: "Create seed data",
status: TaskStatus.IN_PROGRESS,
priority: TaskPriority.MEDIUM,
},
];
// Use createMany for batch insertion (better performance)
await tx.task.createMany({
data: tasks.map((taskData) => ({
workspaceId: workspace.id,
title: taskData.title,
status: taskData.status,
priority: taskData.priority,
creatorId: user.id,
projectId: project.id,
})),
});
console.log(`Created ${tasks.length} sample tasks`);
// Create sample event
const tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 1);
tomorrow.setHours(10, 0, 0, 0);
await tx.event.create({
data: {
workspaceId: workspace.id,
title: "Morning standup",
description: "Daily team sync",
startTime: tomorrow,
endTime: new Date(tomorrow.getTime() + 30 * 60000), // 30 minutes later
creatorId: user.id,
projectId: project.id,
},
});
}
console.log(`Created ${tasks.length} sample tasks`);
// Create sample event
const tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 1);
tomorrow.setHours(10, 0, 0, 0);
await prisma.event.create({
data: {
workspaceId: workspace.id,
title: "Morning standup",
description: "Daily team sync",
startTime: tomorrow,
endTime: new Date(tomorrow.getTime() + 30 * 60000), // 30 minutes later
creatorId: user.id,
projectId: project.id,
},
console.log("Created sample event");
});
console.log("Created sample event");
console.log("Seeding completed successfully!");
}