Add unit tests

Author: slyg

GetS2SToken/__mocks__/axios.js

@@ -0,0 +1,3 @@
+module.exports = jest
+  .fn(() => Promise.resolve("coucou"))
+  .mockName("mockedAxios");

GetS2SToken/__tests__/index.spec.js

@@ -0,0 +1,69 @@
+const mockAxios = require("axios");
+const getS2SToken = require("../index");
+
+const validHeaders = {
+  "s2s-url": "http://stuff/lease",
+  "service-name": "my-name",
+  "service-key": "the-key"
+};
+
+describe("getS2SToken function", () => {
+  beforeEach(() => {
+    mockAxios.mockReset();
+  });
+
+  it("should return an error response when the header parameters are invalid", async () => {
+    const done = jest.fn();
+    const ctx = { done };
+    await getS2SToken(ctx, { headers: {} });
+
+    expect(ctx.res.status).toEqual(500);
+  });
+
+  it("should query the s2s server with the right payload", async () => {
+    const done = jest.fn();
+    const ctx = { done };
+    const req = { headers: validHeaders };
+    await getS2SToken(ctx, req);
+
+    expect(mockAxios).toHaveBeenCalledWith(
+      expect.objectContaining({
+        body: expect.any(String),
+        headers: {
+          "Content-Type": "application/json"
+        },
+        method: "post",
+        url: "http://stuff/lease"
+      })
+    );
+
+    const calledBody = JSON.parse(mockAxios.mock.calls[0][0].body);
+
+    expect(calledBody).toHaveProperty("microservice", "my-name");
+    expect(calledBody).toHaveProperty("oneTimePassword");
+  });
+
+  it("should return an error response when the s2s server request fails", async () => {
+    const done = jest.fn();
+    const ctx = { done };
+    const req = { headers: validHeaders };
+    mockAxios.mockImplementationOnce(() => Promise.reject(new Error("woops")));
+    await getS2SToken(ctx, req);
+
+    expect(ctx.res.status).toEqual(500);
+  });
+
+  it("should return a response with the token received from the s2s server", async () => {
+    const done = jest.fn();
+    const ctx = { done };
+    const req = { headers: validHeaders };
+    mockAxios.mockImplementationOnce(() =>
+      Promise.resolve({
+        text: () => "hey"
+      })
+    );
+    await getS2SToken(ctx, req);
+
+    expect(ctx.res).toEqual({ status: 200, body: { token: "hey" } });
+  });
+});