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feat: wrap article and user service functions with TypedResult for improved error handling

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This commit is contained in:
Vitor Hideyoshi
2026-04-11 01:48:09 -03:00
parent 94e8058880
commit af17b6dc5a
10 changed files with 363 additions and 240 deletions
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196
tests/lib/feature/article/article.service.test.ts
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@@ -34,7 +34,8 @@ describe('ArticleService', () => {
role: 'admin',
};
const savedAuthor = await saveUser(author);
authorId = savedAuthor.id;
if (!savedAuthor.ok) throw savedAuthor.error;
authorId = savedAuthor.value.id;
}, 1_000_000);
afterAll(async () => {
@@ -51,16 +52,18 @@ describe('ArticleService', () => {
authorId: authorId,
};
const savedArticle = await saveArticle(articleToSave);
const result = await saveArticle(articleToSave);
expect(savedArticle.id).toBeDefined();
expect(savedArticle.title).toBe(articleToSave.title);
expect(savedArticle.slug).toBe(articleToSave.slug);
expect(savedArticle.description).toBe(articleToSave.description);
expect(savedArticle.coverImageUrl).toBe(articleToSave.coverImageUrl);
expect(savedArticle.content).toBe(articleToSave.content);
expect(savedArticle.authorId).toBe(authorId);
expect(savedArticle.externalId).toBeDefined();
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value.id).toBeDefined();
expect(result.value.title).toBe(articleToSave.title);
expect(result.value.slug).toBe(articleToSave.slug);
expect(result.value.description).toBe(articleToSave.description);
expect(result.value.coverImageUrl).toBe(articleToSave.coverImageUrl);
expect(result.value.content).toBe(articleToSave.content);
expect(result.value.authorId).toBe(authorId);
expect(result.value.externalId).toBeDefined();
});
test('cannot save article with existing slug', async () => {
@@ -72,77 +75,99 @@ describe('ArticleService', () => {
content: 'Duplicate content.',
authorId: authorId,
};
await expect(saveArticle(articleToSave)).rejects.toThrow(
`Article with slug ${articleToSave.slug} already exists`
);
const result = await saveArticle(articleToSave);
expect(result.ok).toBe(false);
if (result.ok) return;
expect(result.error.message).toContain(articleToSave.slug);
});
test('can getArticleBySlug', async () => {
const article = await getArticleBySlug('test-article');
const result = await getArticleBySlug('test-article');
expect(article).toBeDefined();
expect(article?.slug).toBe('test-article');
expect(article?.title).toBe('Test Article');
expect(article?.authorId).toBe(authorId);
expect(article?.externalId).toBeDefined();
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeDefined();
expect(result.value?.slug).toBe('test-article');
expect(result.value?.title).toBe('Test Article');
expect(result.value?.authorId).toBe(authorId);
expect(result.value?.externalId).toBeDefined();
});
test('cannot getArticleBySlug with non-existing slug', async () => {
await expect(getArticleBySlug('non-existing-slug')).resolves.toBeNull();
const result = await getArticleBySlug('non-existing-slug');
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeNull();
});
test('can getArticlesByAuthorId', async () => {
const articles = await getArticlesByAuthorId(authorId);
const result = await getArticlesByAuthorId(authorId);
expect(articles).toBeDefined();
expect(articles.length).toBeGreaterThanOrEqual(1);
expect(articles[0].authorId).toBe(authorId);
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeDefined();
expect(result.value.length).toBeGreaterThanOrEqual(1);
expect(result.value[0].authorId).toBe(authorId);
});
test('getArticlesByAuthorId returns empty for non-existing author', async () => {
const articles = await getArticlesByAuthorId('9999');
const result = await getArticlesByAuthorId('9999');
expect(articles).toBeDefined();
expect(articles.length).toBe(0);
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeDefined();
expect(result.value.length).toBe(0);
});
test('can getArticleByExternalId', async () => {
const article = await getArticleBySlug('test-article');
const slugResult = await getArticleBySlug('test-article');
expect(slugResult.ok).toBe(true);
if (!slugResult.ok) return;
const article = slugResult.value;
expect(article).toBeDefined();
const foundArticle = await getArticleByExternalId(
const result = await getArticleByExternalId(
article!.externalId as UUIDv4
);
expect(foundArticle).toBeDefined();
expect(foundArticle?.id).toBe(article!.id);
expect(foundArticle?.title).toBe(article!.title);
expect(foundArticle?.slug).toBe(article!.slug);
expect(foundArticle?.externalId).toBe(article!.externalId);
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeDefined();
expect(result.value?.id).toBe(article!.id);
expect(result.value?.title).toBe(article!.title);
expect(result.value?.slug).toBe(article!.slug);
expect(result.value?.externalId).toBe(article!.externalId);
});
test('getArticleByExternalId returns null for non-existing id', async () => {
const result = await getArticleByExternalId(
'00000000-0000-4000-a000-000000000000' as UUIDv4
);
expect(result).toBeNull();
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeNull();
});
test('can getArticlesPaginated with defaults', async () => {
const result = await getArticlesPaginated();
expect(result).toBeDefined();
expect(result.data.length).toBeGreaterThanOrEqual(1);
expect(result.page).toBe(1);
expect(result.pageSize).toBe(10);
expect(result.total).toBeGreaterThanOrEqual(1);
expect(result.totalPages).toBeGreaterThanOrEqual(1);
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value.data.length).toBeGreaterThanOrEqual(1);
expect(result.value.page).toBe(1);
expect(result.value.pageSize).toBe(10);
expect(result.value.total).toBeGreaterThanOrEqual(1);
expect(result.value.totalPages).toBeGreaterThanOrEqual(1);
});
test('can getArticlesPaginated with custom page size', async () => {
// Save extra articles to test pagination
for (let i = 0; i < 3; i++) {
await saveArticle({
const r = await saveArticle({
title: `Paginated Article ${i}`,
slug: `paginated-article-${i}`,
description: `Description ${i}`,
@@ -150,29 +175,36 @@ describe('ArticleService', () => {
content: `Content ${i}`,
authorId: authorId,
});
if (!r.ok) throw r.error;
}
const firstPage = await getArticlesPaginated(1, 2);
const firstPageResult = await getArticlesPaginated(1, 2);
expect(firstPage.data.length).toBe(2);
expect(firstPage.page).toBe(1);
expect(firstPage.pageSize).toBe(2);
expect(firstPage.total).toBeGreaterThanOrEqual(4);
expect(firstPage.totalPages).toBeGreaterThanOrEqual(2);
expect(firstPageResult.ok).toBe(true);
if (!firstPageResult.ok) return;
expect(firstPageResult.value.data.length).toBe(2);
expect(firstPageResult.value.page).toBe(1);
expect(firstPageResult.value.pageSize).toBe(2);
expect(firstPageResult.value.total).toBeGreaterThanOrEqual(4);
expect(firstPageResult.value.totalPages).toBeGreaterThanOrEqual(2);
const secondPage = await getArticlesPaginated(2, 2);
const secondPageResult = await getArticlesPaginated(2, 2);
expect(secondPage.data.length).toBe(2);
expect(secondPage.page).toBe(2);
expect(secondPage.pageSize).toBe(2);
expect(secondPageResult.ok).toBe(true);
if (!secondPageResult.ok) return;
expect(secondPageResult.value.data.length).toBe(2);
expect(secondPageResult.value.page).toBe(2);
expect(secondPageResult.value.pageSize).toBe(2);
});
test('can getArticlesPaginated returns empty on out-of-range page', async () => {
const result = await getArticlesPaginated(999, 10);
expect(result.data.length).toBe(0);
expect(result.page).toBe(999);
expect(result.total).toBeGreaterThanOrEqual(1);
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value.data.length).toBe(0);
expect(result.value.page).toBe(999);
expect(result.value.total).toBeGreaterThanOrEqual(1);
});
test('can update article', async () => {
@@ -181,18 +213,23 @@ describe('ArticleService', () => {
description: 'Updated description',
};
const article = await getArticleBySlug('test-article');
const slugResult = await getArticleBySlug('test-article');
expect(slugResult.ok).toBe(true);
if (!slugResult.ok) return;
const article = slugResult.value;
expect(article).toBeDefined();
const updatedArticle = await updateArticle(article!.id, dataToUpdate);
const result = await updateArticle(article!.id, dataToUpdate);
expect(updatedArticle).toBeDefined();
expect(updatedArticle.id).toBe(article!.id);
expect(updatedArticle.title).toBe(dataToUpdate.title);
expect(updatedArticle.description).toBe(dataToUpdate.description);
expect(updatedArticle.slug).toBe(article!.slug);
expect(updatedArticle.content).toBe(article!.content);
expect(updatedArticle.externalId).toBeDefined();
expect(result.ok).toBe(true);
if (!result.ok) return;
expect(result.value).toBeDefined();
expect(result.value.id).toBe(article!.id);
expect(result.value.title).toBe(dataToUpdate.title);
expect(result.value.description).toBe(dataToUpdate.description);
expect(result.value.slug).toBe(article!.slug);
expect(result.value.content).toBe(article!.content);
expect(result.value.externalId).toBeDefined();
});
test('cannot update non-existing article', async () => {
@@ -200,9 +237,11 @@ describe('ArticleService', () => {
title: 'Updated Article Title',
};
await expect(updateArticle('9999', dataToUpdate)).rejects.toThrow(
`Article with ID 9999 not found`
);
const result = await updateArticle('9999', dataToUpdate);
expect(result.ok).toBe(false);
if (result.ok) return;
expect(result.error.message).toContain('9999');
});
test('can delete article', async () => {
@@ -215,18 +254,25 @@ describe('ArticleService', () => {
authorId: authorId,
};
const savedArticle = await saveArticle(articleToSave);
expect(savedArticle.id).toBeDefined();
const saveResult = await saveArticle(articleToSave);
expect(saveResult.ok).toBe(true);
if (!saveResult.ok) return;
expect(saveResult.value.id).toBeDefined();
await deleteArticle(savedArticle.id);
const deleteResult = await deleteArticle(saveResult.value.id);
expect(deleteResult.ok).toBe(true);
const deletedArticle = await getArticleBySlug('article-to-delete');
expect(deletedArticle).toBeNull();
const getResult = await getArticleBySlug('article-to-delete');
expect(getResult.ok).toBe(true);
if (!getResult.ok) return;
expect(getResult.value).toBeNull();
});
test('cannot delete non-existing article', async () => {
await expect(deleteArticle('9999')).rejects.toThrow(
`Article with ID 9999 not found`
);
const result = await deleteArticle('9999');
expect(result.ok).toBe(false);
if (result.ok) return;
expect(result.error.message).toContain('9999');
});
});