feat: X API Cost Crisis Alert Chrome extension MVP with cost calculator, 8 alternatives, and 12 passing tests

2026-06-20 06:23:33 +00:00
commit 7052227f69
25 changed files with 3050 additions and 0 deletions
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+import { describe, it } from 'node:test';
+import assert from 'node:assert';
+import { calculateXCost, getAlternativesForUseCase, xApiAlternatives } from '../src/data/alternatives.js';
+describe('calculateXCost', () => {
+    it('returns Free tier for 0 reads and 0 writes', () => {
+        const result = calculateXCost(0, 0);
+        assert.strictEqual(result.tier, 'Free');
+        assert.strictEqual(result.cost, 0);
+        assert.strictEqual(result.overage, false);
+    });
+    it('returns Free tier for 1500 reads and 0 writes', () => {
+        const result = calculateXCost(1500, 0);
+        assert.strictEqual(result.tier, 'Free');
+        assert.strictEqual(result.cost, 0);
+    });
+    it('returns Basic tier for 5000 reads and 100 writes', () => {
+        const result = calculateXCost(5000, 100);
+        assert.strictEqual(result.tier, 'Basic');
+        assert.strictEqual(result.cost, 100);
+    });
+    it('returns Pro tier for 500000 reads and 100000 writes', () => {
+        const result = calculateXCost(500000, 100000);
+        assert.strictEqual(result.tier, 'Pro');
+        assert.strictEqual(result.cost, 5000);
+    });
+    it('returns Enterprise tier for 5M reads and 500K writes', () => {
+        const result = calculateXCost(5000000, 500000);
+        assert.strictEqual(result.tier, 'Enterprise');
+        assert.strictEqual(result.cost, 42000);
+    });
+    it('returns Enterprise+ with overage for 25M reads', () => {
+        const result = calculateXCost(25000000, 1000000);
+        assert.strictEqual(result.tier, 'Enterprise+');
+        assert.strictEqual(result.overage, true);
+        assert.strictEqual(result.cost, 92000);
+    });
+});
+describe('getAlternativesForUseCase', () => {
+    it('returns RSS alternatives for rss filter', () => {
+        const alts = getAlternativesForUseCase('rss');
+        assert.ok(alts.length > 0);
+        assert.ok(alts.some(a => a.name.includes('RSSHub')));
+    });
+    it('returns scraping alternatives for scraping filter', () => {
+        const alts = getAlternativesForUseCase('scraping');
+        assert.ok(alts.some(a => a.name.includes('TweetScraper')));
+    });
+    it('returns default alternatives for unknown filter', () => {
+        const alts = getAlternativesForUseCase('unknown-category');
+        assert.ok(alts.length > 0);
+    });
+});
+describe('xApiAlternatives data', () => {
+    it('has at least 8 alternatives', () => {
+        assert.ok(xApiAlternatives.length >= 8);
+    });
+    it('every alternative has required fields', () => {
+        for (const alt of xApiAlternatives) {
+            assert.ok(alt.name, 'name is required');
+            assert.ok(alt.website, 'website is required');
+            assert.ok(alt.freeTier, 'freeTier is required');
+            assert.ok(alt.paidTier, 'paidTier is required');
+            assert.ok(alt.description, 'description is required');
+            assert.ok(alt.features.length > 0, 'features must not be empty');
+            assert.ok(alt.bestFor, 'bestFor is required');
+        }
+    });
+    it('all websites are valid URLs', () => {
+        for (const alt of xApiAlternatives) {
+            assert.ok(alt.website.startsWith('http'), `${alt.name} website must start with http`);
+        }
+    });
+});