feat(api): implement all features

__tests__/errors.spec.ts

@@ -0,0 +1,94 @@
+import { handleApiErrors, ResourceError } from '../src/errors'
+
+describe('errors', () => {
+  describe('handleApiErrors', () => {
+    it('returns a ResourceError if error has a response property', () => {
+      const res = handleApiErrors({
+        response: {},
+      })
+
+      expect(res).toBeInstanceOf(ResourceError)
+    })
+
+    it('throws the original error if it has no response property', () => {
+      expect(() => handleApiErrors(new Error('test'))).toThrow('test')
+    })
+  })
+
+  describe('ResourceError', () => {
+    it('extends Error class', () => {
+      const err = new ResourceError({} as any)
+      expect(err).toBeInstanceOf(Error)
+      expect(err.message).toBe('CommerceLayer API error')
+    })
+
+    it('creates an error with a request property', () => {
+      let err = new ResourceError({} as any)
+      expect(err.request).toBeUndefined()
+
+      err = new ResourceError({ request: {} } as any)
+      expect(err.request).toEqual({})
+    })
+
+    it('creates an error with a response property', () => {
+      let err = new ResourceError({} as any)
+      expect(err.response).toBeUndefined()
+
+      err = new ResourceError({ response: {} } as any)
+      expect(err.response).toEqual({})
+    })
+
+    it('creates an error with a config property', () => {
+      let err = new ResourceError({} as any)
+      expect(err.config).toBeUndefined()
+
+      err = new ResourceError({ config: {} } as any)
+      expect(err.config).toEqual({})
+    })
+
+    it('creates an error with a messages property', () => {
+      let err = new ResourceError({} as any)
+      expect(err.messages).toEqual([])
+
+      err = new ResourceError({ response: {} } as any)
+      expect(err.messages).toEqual([])
+
+      err = new ResourceError({ response: { data: {} } } as any)
+      expect(err.messages).toEqual([])
+
+      err = new ResourceError({ response: { data: { errors: null } } } as any)
+      expect(err.messages).toEqual([])
+
+      err = new ResourceError({ response: { data: { errors: ['1'] } } } as any)
+      expect(err.messages).toEqual(['1'])
+    })
+
+    it('creates an error with a firstMessage property', () => {
+      let err = new ResourceError({} as any)
+      expect(err.firstMessage).toBeUndefined()
+
+      err = new ResourceError({ response: {} } as any)
+      expect(err.firstMessage).toBeUndefined()
+
+      err = new ResourceError({ response: { data: { errors: 'asd' } } } as any)
+      expect(err.firstMessage).toBeUndefined()
+
+      err = new ResourceError({ response: { data: { errors: [] } } } as any)
+      expect(err.firstMessage).toBeUndefined()
+
+      err = new ResourceError({ response: { data: { errors: ['1'] } } } as any)
+      expect(err.firstMessage).toEqual('1')
+    })
+
+    it('creates an error with a status property', () => {
+      let err = new ResourceError({} as any)
+      expect(err.status).toBeUndefined()
+
+      err = new ResourceError({ response: {} } as any)
+      expect(err.status).toBeUndefined()
+
+      err = new ResourceError({ response: { status: 200 } } as any)
+      expect(err.status).toEqual(200)
+    })
+  })
+})