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diff --git a/web/database/queries/draft-queries.test.js b/web/database/queries/draft-queries.test.js
new file mode 100644
--- /dev/null
+++ b/web/database/queries/draft-queries.test.js
@@ -0,0 +1,114 @@
+// @flow
+
+import initSqlJs from 'sql.js';
+
+import { setupSQLiteDB } from './db-queries.js';
+import {
+ getAllDrafts,
+ moveDraft,
+ removeAllDrafts,
+ updateDraft,
+} from './draft-queries.js';
+
+describe('Draft Store queries', () => {
+ let db;
+
+ beforeAll(async () => {
+ const SQL = await initSqlJs();
+ db = new SQL.Database();
+ });
+
+ beforeEach(() => {
+ setupSQLiteDB(db);
+ db.exec(`
+ INSERT INTO drafts VALUES ("thread_a", "draft a");
+ INSERT INTO drafts VALUES ("thread_b", "draft b");
+ `);
+ });
+
+ afterEach(() => {
+ db.exec(`DELETE FROM drafts`);
+ });
+
+ it('should return all drafts', () => {
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(2);
+ });
+
+ it('should remove all drafts', () => {
+ removeAllDrafts(db);
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(0);
+ });
+
+ it('should update draft text', () => {
+ const key = 'thread_b';
+ const text = 'updated message';
+ updateDraft(db, key, text);
+
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(2);
+
+ const draft = drafts.find(d => d.key === key);
+ expect(draft?.text).toBe(text);
+ });
+
+ it('should insert not existing draft', () => {
+ const key = 'new_key';
+ const text = 'some message';
+ updateDraft(db, key, text);
+
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(3);
+
+ const draft = drafts.find(d => d.key === key);
+ expect(draft?.text).toBe(text);
+ });
+
+ it('should move draft to a new key', () => {
+ const newKey = 'new_key';
+ const oldKey = 'thread_a';
+ const draftText = 'draft a';
+ moveDraft(db, oldKey, newKey);
+
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(2);
+
+ const oldKeyDraft = drafts.find(d => d.key === oldKey);
+ expect(oldKeyDraft).toBeUndefined();
+
+ const newKeyDraft = drafts.find(d => d.key === newKey);
+ expect(newKeyDraft?.text).toBe(draftText);
+ });
+
+ it('should not change anything if oldKey not exists', () => {
+ const newKey = 'new_key';
+ const oldKey = 'missing_key';
+ moveDraft(db, oldKey, newKey);
+
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(2);
+
+ const oldKeyDraft = drafts.find(d => d.key === oldKey);
+ expect(oldKeyDraft).toBeUndefined();
+
+ const newKeyDraft = drafts.find(d => d.key === newKey);
+ expect(newKeyDraft).toBeUndefined();
+ });
+
+ it('should move and replace if newKey exists', () => {
+ const newKey = 'thread_b';
+ const oldKey = 'thread_a';
+ const draftText = 'draft a';
+ moveDraft(db, oldKey, newKey);
+
+ const drafts = getAllDrafts(db);
+ expect(drafts.length).toBe(1);
+
+ const oldKeyDraft = drafts.find(d => d.key === oldKey);
+ expect(oldKeyDraft).toBeUndefined();
+
+ const newKeyDraft = drafts.find(d => d.key === newKey);
+ expect(newKeyDraft?.text).toBe(draftText);
+ });
+});

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