wip

packages/browser/src/plugins/segmentio/__tests__/index.test.ts

@@ -65,7 +65,74 @@ describe('Segment.io', () => {
     })
   })
 
-  describe('configuring a keep alive', () => {
+  describe('configuring additionalHeaders', () => {
+    it('should accept additional headers', async () => {
+      const analytics = new Analytics({ writeKey: 'foo' })
+
+      await analytics.register(
+        await segmentio(analytics, {
+          apiKey: '',
+          deliveryStrategy: {
+            config: {
+              additionalHeaders: {
+                'X-My-Header': 'foo',
+              },
+            },
+          },
+        })
+      )
+
+      await analytics.track('foo')
+      const [_, params] = spyMock.mock.lastCall
+      expect(params.headers['X-My-Header']).toBe('foo')
+      expect(params.headers['Content-Type']).toBe('text/plain')
+    })
+
+    it('should allow additional headers to be a function', async () => {
+      const analytics = new Analytics({ writeKey: 'foo' })
+
+      await analytics.register(
+        await segmentio(analytics, {
+          apiKey: '',
+          deliveryStrategy: {
+            config: {
+              additionalHeaders: () => ({
+                'X-My-Header': 'foo',
+              }),
+            },
+          },
+        })
+      )
+
+      await analytics.track('foo')
+      const [_, params] = spyMock.mock.lastCall
+      expect(params.headers['X-My-Header']).toBe('foo')
+      expect(params.headers['Content-Type']).toBe('text/plain')
+    })
+  })
+
+  describe('configuring fetch priority', () => {
+    it('should accept fetch priority configuration', async () => {
+      const analytics = new Analytics({ writeKey: 'foo' })
+
+      await analytics.register(
+        await segmentio(analytics, {
+          apiKey: '',
+          deliveryStrategy: {
+            config: {
+              fetchPriority: 'high',
+            },
+          },
+        })
+      )
+
+      await analytics.track('foo')
+      const [_, params] = spyMock.mock.lastCall
+      expect(params.priority).toBe('high')
+    })
+  })
+
+  describe('configuring keepalive', () => {
     it('should accept keepalive configuration', async () => {
       const analytics = new Analytics({ writeKey: 'foo' })