Add Tests for PR#3811

src/services/codecovAI/space.test.ts

@@ -0,0 +1,76 @@
+import { describe, expect, it, vi, beforeEach } from 'vitest'
+
+// Import the functions and classes we're testing
+import { SpaceTopic, CookingTopic, TechnologyTopic, _getRandomTopic } from './space'
+
+describe('Topic implementations', () => {
+  describe('SpaceTopic', () => {
+    it('has the correct id and name', () => {
+      const topic = new SpaceTopic()
+      expect(topic.id).toBe(1)
+      expect(topic.name).toBe('Space')
+    })
+
+    it('returns a fact about space', () => {
+      const topic = new SpaceTopic()
+      const fact = topic.getFact()
+      const possibleFacts = [
+        'The universe is expanding at an accelerating rate.',
+        'Black holes can warp space and time.',
+        'Stars are born in cosmic nurseries called nebulae.',
+      ]
+      expect(possibleFacts).toContain(fact)
+    })
+  })
+
+  describe('CookingTopic', () => {
+    it('has the correct id and name', () => {
+      const topic = new CookingTopic()
+      expect(topic.id).toBe(2)
+      expect(topic.name).toBe('Cooking')
+    })
+
+    it('returns a fact about cooking', () => {
+      const topic = new CookingTopic()
+      const fact = topic.getFact()
+      const possibleFacts = [
+        'Searing meat locks in its juices.',
+        'A pinch of salt enhances sweet flavors.',
+        'Baking requires precise measurements to succeed.',
+      ]
+      expect(possibleFacts).toContain(fact)
+    })
+  })
+
+  describe('TechnologyTopic', () => {
+    it('has the correct id and name', () => {
+      const topic = new TechnologyTopic()
+      expect(topic.id).toBe(3)
+      expect(topic.name).toBe('Technology')
+    })
+
+    it('returns a fact about technology', () => {
+      const topic = new TechnologyTopic()
+      const fact = topic.getFact()
+      const possibleFacts = [
+        "Moore's law predicts the doubling of transistors every couple of years.",
+        'Artificial intelligence is transforming numerous industries.',
+        'Quantum computing promises to revolutionize cryptography.',
+      ]
+      expect(possibleFacts).toContain(fact)
+    })
+  })
+})
+
+describe('_getRandomTopic', () => {
+  it('returns a valid Topic instance', () => {
+    const topic = _getRandomTopic()
+    expect(topic).toHaveProperty('id')
+    expect(topic).toHaveProperty('name')
+    expect(typeof topic.getFact).toBe('function')
+
+    const possibleTopics = [SpaceTopic, CookingTopic, TechnologyTopic]
+    const isValidTopicInstance = possibleTopics.some(TopicClass => topic instanceof TopicClass)
+    expect(isValidTopicInstance).toBe(true)
+  })
+})