fix(services,types): make queries and types coherent for Topic

* some nodes was missing in topicQuery
* a node was mispelled in topicsListQuery
* add tests for all topics fetchers

8 files changed, 109 insertions, 5 deletions

diff --git a/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.test.ts b/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.test.ts
new file mode 100644
index 0000000..2e3bbb2
--- /dev/null
+++ b/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.test.ts
@@ -0,0 +1,26 @@
+import { afterEach, describe, expect, it } from '@jest/globals';
+import { wpTopicsFixture } from '../../../../../tests/fixtures';
+import { fetchAllTopicsSlugs } from './fetch-all-topics-slugs';
+
+describe('fetch-all-topics-slugs', () => {
+  afterEach(() => {
+    window.history.replaceState({}, '', '/');
+  });
+
+  it('returns the WordPress topics using GraphQL', async () => {
+    const result = await fetchAllTopicsSlugs(wpTopicsFixture.length);
+
+    expect.assertions(1);
+
+    expect(result).toStrictEqual(wpTopicsFixture.map((post) => post.slug));
+  });
+
+  it('rejects with an error when no topics are found', async () => {
+    window.history.replaceState({}, '', '/?error=true');
+    expect.assertions(1);
+
+    await expect(async () =>
+      fetchAllTopicsSlugs(wpTopicsFixture.length)
+    ).rejects.toEqual(new Error('Unable to find the topics slugs.'));
+  });
+});
diff --git a/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts b/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts
index 1df0039..8af2757 100644
--- a/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts
+++ b/src/services/graphql/fetchers/topics/fetch-all-topics-slugs.ts
@@ -1,7 +1,7 @@
 import type { GraphQLNodes, Nullable, SlugNode } from '../../../../types';
 import { fetchGraphQL, getGraphQLUrl } from '../../../../utils/helpers';
 
-type TopicsSlugsResponse = {
+export type TopicsSlugsResponse = {
   topics: Nullable<GraphQLNodes<SlugNode>>;
 };
 
diff --git a/src/services/graphql/fetchers/topics/fetch-topic.test.ts b/src/services/graphql/fetchers/topics/fetch-topic.test.ts
new file mode 100644
index 0000000..5fae313
--- /dev/null
+++ b/src/services/graphql/fetchers/topics/fetch-topic.test.ts
@@ -0,0 +1,23 @@
+import { describe, expect, it } from '@jest/globals';
+import { wpTopicsFixture } from '../../../../../tests/fixtures';
+import { fetchTopic } from './fetch-topic';
+
+describe('fetch-topic', () => {
+  it('returns a topic by slug', async () => {
+    const result = await fetchTopic(wpTopicsFixture[2].slug);
+
+    expect.assertions(1);
+
+    expect(result).toStrictEqual(wpTopicsFixture[2]);
+  });
+
+  it('rejects with an error when the slug does not exist', async () => {
+    const slug = '/inexistent-slug';
+
+    expect.assertions(1);
+
+    await expect(async () => fetchTopic(slug)).rejects.toEqual(
+      new Error(`No topic found for the following slug ${slug}.`)
+    );
+  });
+});
diff --git a/src/services/graphql/fetchers/topics/fetch-topic.ts b/src/services/graphql/fetchers/topics/fetch-topic.ts
index efc1d9e..9c01096 100644
--- a/src/services/graphql/fetchers/topics/fetch-topic.ts
+++ b/src/services/graphql/fetchers/topics/fetch-topic.ts
@@ -1,7 +1,7 @@
 import type { Nullable, WPTopic } from '../../../../types';
 import { fetchGraphQL, getGraphQLUrl } from '../../../../utils/helpers';
 
-type TopicResponse = {
+export type TopicResponse = {
   topic: Nullable<WPTopic>;
 };
 
@@ -55,6 +55,8 @@ const topicQuery = `query Topic($slug: ID!) {
       afterMore
       beforeMore
     }
+    databaseId
+    date
     featuredImage {
       node {
         altText
@@ -66,6 +68,7 @@ const topicQuery = `query Topic($slug: ID!) {
         title
       }
     }
+    modified
     seo {
       metaDesc
       title
diff --git a/src/services/graphql/fetchers/topics/fetch-topics-count.test.ts b/src/services/graphql/fetchers/topics/fetch-topics-count.test.ts
new file mode 100644
index 0000000..0e3bb90
--- /dev/null
+++ b/src/services/graphql/fetchers/topics/fetch-topics-count.test.ts
@@ -0,0 +1,26 @@
+import { afterEach, describe, expect, it } from '@jest/globals';
+import { wpTopicsFixture } from '../../../../../tests/fixtures';
+import { fetchTopicsCount } from './fetch-topics-count';
+
+describe('fetch-topics-count', () => {
+  afterEach(() => {
+    window.history.replaceState({}, '', '/');
+  });
+
+  it('returns the WordPress topics count using GraphQL', async () => {
+    const result = await fetchTopicsCount();
+
+    expect.assertions(1);
+
+    expect(result).toBe(wpTopicsFixture.length);
+  });
+
+  it('rejects with an error when no topics are found', async () => {
+    window.history.replaceState({}, '', '/?error=true');
+    expect.assertions(1);
+
+    await expect(async () => fetchTopicsCount()).rejects.toEqual(
+      new Error('Unable to find the total number of topics.')
+    );
+  });
+});
diff --git a/src/services/graphql/fetchers/topics/fetch-topics-count.ts b/src/services/graphql/fetchers/topics/fetch-topics-count.ts
index 868b01e..0f8bdfc 100644
--- a/src/services/graphql/fetchers/topics/fetch-topics-count.ts
+++ b/src/services/graphql/fetchers/topics/fetch-topics-count.ts
@@ -5,7 +5,7 @@ import type {
 } from '../../../../types';
 import { fetchGraphQL, getGraphQLUrl } from '../../../../utils/helpers';
 
-type TopicsCountResponse = {
+export type TopicsCountResponse = {
   topics: Nullable<{
     pageInfo: Pick<GraphQLPageInfo, 'total'>;
   }>;
diff --git a/src/services/graphql/fetchers/topics/fetch-topics-list.test.ts b/src/services/graphql/fetchers/topics/fetch-topics-list.test.ts
new file mode 100644
index 0000000..b841974
--- /dev/null
+++ b/src/services/graphql/fetchers/topics/fetch-topics-list.test.ts
@@ -0,0 +1,26 @@
+import { afterEach, describe, expect, it } from '@jest/globals';
+import { wpTopicsFixture } from '../../../../../tests/fixtures';
+import { fetchTopicsList } from './fetch-topics-list';
+
+describe('fetch-topics-list', () => {
+  afterEach(() => {
+    window.history.replaceState({}, '', '/');
+  });
+
+  it('returns the WordPress topics using GraphQL', async () => {
+    const result = await fetchTopicsList({});
+
+    expect.assertions(1);
+
+    expect(result.pageInfo.total).toBe(wpTopicsFixture.length);
+  });
+
+  it('rejects with an error when no topics are found', async () => {
+    window.history.replaceState({}, '', '/?error=true');
+    expect.assertions(1);
+
+    await expect(async () =>
+      fetchTopicsList({ where: { title: 'inexistent-title' } })
+    ).rejects.toEqual(new Error('No topics found.'));
+  });
+});
diff --git a/src/services/graphql/fetchers/topics/fetch-topics-list.ts b/src/services/graphql/fetchers/topics/fetch-topics-list.ts
index 1bc2e38..2ede721 100644
--- a/src/services/graphql/fetchers/topics/fetch-topics-list.ts
+++ b/src/services/graphql/fetchers/topics/fetch-topics-list.ts
@@ -8,7 +8,7 @@ import type {
 } from '../../../../types';
 import { fetchGraphQL, getGraphQLUrl } from '../../../../utils/helpers';
 
-type TopicsListResponse = {
+export type TopicsListResponse = {
   topics: Nullable<GraphQLConnection<WPTopicPreview>>;
 };
 
@@ -34,7 +34,7 @@ const topicsListQuery = `query TopicsList($after: String, $before: String, $firs
               height
               width
             }
-            slug
+            sourceUrl
             title
           }
         }