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index.test.ts
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index.test.ts
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import middy from "@middy/core";
import lesslog from "lesslog";
import log from "./index.ts";
jest.mock("lesslog");
describe("log", () => {
describe("after", () => {
it("logs response", () => {
const context = { awsRequestId: Symbol("awsRequestId") };
const event = Symbol("event");
const response = Symbol("response");
expect(
log().after({ context, event, response } as unknown as middy.Request),
).toBeUndefined();
expect(lesslog.debug).toHaveBeenCalledTimes(1);
expect(lesslog.debug).toHaveBeenCalledWith("Response", { response });
expect(lesslog.clear).toHaveBeenCalledTimes(1);
expect(lesslog.clear).toHaveBeenCalledWith();
expect(lesslog.label).toBe("");
});
it("logs error if set", () => {
const context = { awsRequestId: Symbol("awsRequestId") };
const event = Symbol("event");
const response = Symbol("response");
const details = Symbol("details");
const error = Object.assign(new Error("‾\\_(ツ)_/‾"), { details });
expect(
log().after({
context,
error,
event,
response,
} as unknown as middy.Request),
).toBeUndefined();
expect(lesslog.debug).toHaveBeenCalledTimes(1);
expect(lesslog.debug).toHaveBeenCalledWith("Response", { response });
expect(lesslog.error).toHaveBeenCalledTimes(1);
expect(lesslog.error).toHaveBeenCalledWith(error.message, {
error: { details, message: error.message, stack: error.stack },
});
expect(lesslog.clear).not.toHaveBeenCalled();
expect(lesslog.label).toBe("");
});
});
describe("before", () => {
it("logs event", () => {
const context = { awsRequestId: Symbol("awsRequestId") };
const event = Symbol("event");
expect(
log().before({ context, event } as unknown as middy.Request),
).toBeUndefined();
expect(lesslog.debug).toHaveBeenCalledTimes(1);
expect(lesslog.debug).toHaveBeenCalledWith("Request", { context, event });
expect(lesslog.label).toBe(context.awsRequestId);
});
});
describe("onError", () => {
it("logs error", () => {
const context = { awsRequestId: Symbol("awsRequestId") };
const event = Symbol("event");
const details = Symbol("details");
const error = Object.assign(new Error("‾\\_(ツ)_/‾"), { details });
expect(
log().onError({ context, error, event } as unknown as middy.Request),
).toBeUndefined();
expect(lesslog.error).toHaveBeenCalledTimes(1);
expect(lesslog.error).toHaveBeenCalledWith(error.message, {
error: { details, message: error.message, stack: error.stack },
});
expect(lesslog.label).toBe("");
});
it("does nothing if no error", () => {
const context = Symbol("context");
const event = Symbol("event");
expect(
log().onError({ context, event } as unknown as middy.Request),
).toBeUndefined();
expect(lesslog.error).not.toHaveBeenCalled();
});
});
});