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373import { describe, test, expect, vi, beforeEach, afterEach } from "vitest";
import mock from "mock-require";
// Mock the config file at the top level
mock("./ldx.config.js", {
"Test match 1": "✅ Test match 1 processed",
"Test match 3": "🐳 Test match 3 processed",
});
describe("config file check", () => {
let errorSpy;
let exitSpy;
beforeEach(() => {
vi.resetModules();
errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
exitSpy = vi.spyOn(process, "exit").mockImplementation(() => {});
});
test("logs an error and exits when no config file is found", async () => {
mock.stopAll();
await import("./ldx.js");
expect(errorSpy).toHaveBeenCalledWith("Oops, no ldx.config.js file found!");
expect(exitSpy).toHaveBeenCalledWith(1);
});
});
describe("processOutput", () => {
let warnSpy;
beforeEach(() => {
// Reset the module cache before each test
vi.resetModules();
// Create a spy on console.warn
warnSpy = vi.spyOn(console, "warn").mockImplementation(() => {});
});
afterEach(() => {
// Restore the original console.warn
warnSpy.mockRestore();
});
test("returns correct message for static string matches", async () => {
mock("./ldx.config.js", {
"Test match 1": "✅ Test match 1 processed",
});
const { processOutput } = await import("./ldx.js");
const line = "Test match 1";
const result = processOutput(line);
expect(result).toBe("✅ Test match 1 processed");
expect(warnSpy).not.toHaveBeenCalled();
});
test("handles function values correctly", async () => {
mock("./ldx.config.js", {
"Function match": (line) => `Processed: ${line}`,
});
const { processOutput } = await import("./ldx.js");
const line = "Function match test line";
const result = processOutput(line);
expect(result).toBe(`Processed: ${line}`);
expect(warnSpy).not.toHaveBeenCalled();
});
test("handles function errors gracefully and returns original line", async () => {
const errorFn = vi.fn(() => {
throw new Error("Test error");
});
mock("./ldx.config.js", {
"Error match": errorFn,
});
const { processOutput } = await import("./ldx.js");
const line = "Error match with extra text";
const result = processOutput(line);
expect(result).toBe(line); // Returns original line on error
expect(errorFn).toHaveBeenCalled();
expect(warnSpy).toHaveBeenCalledWith(
"LDX: provided function errored: ",
"Test error"
);
});
test("returns undefined for no match", async () => {
mock("./ldx.config.js", { Something: "not used" });
const { processOutput } = await import("./ldx.js");
const line = "Some random line";
const result = processOutput(line);
expect(result).toBeUndefined();
expect(warnSpy).not.toHaveBeenCalled();
});
test("warns for invalid configuration type", async () => {
mock("./ldx.config.js", {
"Invalid match": 12345, // Invalid type (number)
});
const { processOutput } = await import("./ldx.js");
const line = "Invalid match";
const result = processOutput(line);
expect(result).toBeUndefined();
expect(warnSpy).toHaveBeenCalledWith(
"Invalid configuration for key: Invalid match. Expected string or function."
);
});
});
describe("executeAndProcessCommand", () => {
let logSpy;
beforeEach(() => {
vi.clearAllMocks();
mock.stopAll();
logSpy = vi.spyOn(console, "log").mockImplementation(() => {});
// Reset the module cache to ensure fresh imports
vi.resetModules();
});
afterEach(() => {
logSpy.mockRestore();
});
test("rejects when no command is provided", async () => {
const { executeAndProcessCommand } = await import("./ldx.js");
await expect(executeAndProcessCommand()).rejects.toThrow(
"No command provided."
);
});
test("resolves when command executes successfully", async () => {
vi.spyOn(process, "argv", "get").mockReturnValue([
"node",
"ldx.js",
"echo",
"hello",
]);
const mockSpawn = vi.fn(() => ({
stdout: { on: vi.fn() },
stderr: { on: vi.fn() },
on: vi.fn((event, callback) => {
if (event === "close") callback(0);
}),
}));
vi.spyOn(require("child_process"), "spawn").mockImplementation(mockSpawn);
const { executeAndProcessCommand } = await import("./ldx.js");
await expect(executeAndProcessCommand()).resolves.toBeUndefined();
});
test("rejects when command fails", async () => {
vi.spyOn(process, "argv", "get").mockReturnValue([
"node",
"ldx.js",
"false",
]);
const mockSpawn = vi.fn(() => ({
stdout: { on: vi.fn() },
stderr: { on: vi.fn() },
on: vi.fn((event, callback) => {
if (event === "close") callback(1);
}),
}));
vi.spyOn(require("child_process"), "spawn").mockImplementation(mockSpawn);
const { executeAndProcessCommand } = await import("./ldx.js");
await expect(executeAndProcessCommand()).rejects.toThrow(
"Command failed with exit code 1"
);
});
test("processes static strings correctly when command executes", async () => {
// Setup config mock FIRST
mock("./ldx.config.js", {
"Test output": "✅ Processed output",
});
vi.spyOn(process, "argv", "get").mockReturnValue([
"node",
"ldx.js",
"echo",
"Test output",
]);
// Mock spawn to simulate command output
const mockSpawn = vi.fn(() => ({
stdout: {
on: vi.fn((event, callback) => {
if (event === "data") {
// Simulate actual command output
callback(Buffer.from("Test output\n"));
}
}),
},
stderr: { on: vi.fn() },
on: vi.fn((event, callback) => {
if (event === "close") callback(0);
}),
}));
vi.spyOn(require("child_process"), "spawn").mockImplementation(mockSpawn);
// Import AFTER all mocks are set up
const { executeAndProcessCommand } = await import("./ldx.js");
await executeAndProcessCommand();
expect(logSpy).toHaveBeenCalledWith("✅ Processed output");
});
test("processes stderr output correctly", async () => {
mock("./ldx.config.js", {
"Error:": "Transformed error message",
});
vi.spyOn(process, "argv", "get").mockReturnValue([
"node",
"ldx.js",
"somecommand",
]);
const errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
const mockSpawn = vi.fn(() => ({
stdout: { on: vi.fn() },
stderr: {
on: vi.fn((event, callback) => {
if (event === "data") {
callback(Buffer.from("Error: something went wrong\n"));
}
}),
},
on: vi.fn((event, callback) => {
if (event === "close") callback(0);
}),
}));
vi.spyOn(require("child_process"), "spawn").mockImplementation(mockSpawn);
const { executeAndProcessCommand } = await import("./ldx.js");
await executeAndProcessCommand();
expect(errorSpy).toHaveBeenCalledWith("Transformed error message");
errorSpy.mockRestore();
});
test("passes through unmatched stderr lines", async () => {
mock("./ldx.config.js", {
"Something else": "Not this",
});
vi.spyOn(process, "argv", "get").mockReturnValue([
"node",
"ldx.js",
"somecommand",
]);
const errorSpy = vi.spyOn(console, "error").mockImplementation(() => {});
const mockSpawn = vi.fn(() => ({
stdout: { on: vi.fn() },
stderr: {
on: vi.fn((event, callback) => {
if (event === "data") {
callback(Buffer.from("Unmatched error line\n"));
}
}),
},
on: vi.fn((event, callback) => {
if (event === "close") callback(0);
}),
}));
vi.spyOn(require("child_process"), "spawn").mockImplementation(mockSpawn);
const { executeAndProcessCommand } = await import("./ldx.js");
await executeAndProcessCommand();
expect(errorSpy).toHaveBeenCalledWith("Unmatched error line");
errorSpy.mockRestore();
});
test("rejects when spawn fails with error event", async () => {
vi.spyOn(process, "argv", "get").mockReturnValue([
"node",
"ldx.js",
"nonexistentcommand",
]);
const mockSpawn = vi.fn(() => {
const emitter = {
stdout: { on: vi.fn() },
stderr: { on: vi.fn() },
on: vi.fn((event, callback) => {
if (event === "error") {
setTimeout(() => callback(new Error("spawn nonexistentcommand ENOENT")), 0);
}
}),
};
return emitter;
});
vi.spyOn(require("child_process"), "spawn").mockImplementation(mockSpawn);
const { executeAndProcessCommand } = await import("./ldx.js");
await expect(executeAndProcessCommand()).rejects.toThrow(
"Failed to start command: spawn nonexistentcommand ENOENT"
);
});
});
describe("validateConfig", () => {
beforeEach(() => {
vi.resetModules();
mock.stopAll();
});
test("returns valid for correct configuration", async () => {
mock("./ldx.config.js", {
"key1": "value1",
"key2": (line) => line,
});
const { validateConfig } = await import("./ldx.js");
const result = validateConfig({
"key1": "value1",
"key2": (line) => line,
});
expect(result.valid).toBe(true);
});
test("returns invalid for null configuration", async () => {
mock("./ldx.config.js", { "key": "value" });
const { validateConfig } = await import("./ldx.js");
const result = validateConfig(null);
expect(result.valid).toBe(false);
expect(result.error).toBe("Configuration must be a non-null object.");
});
test("returns invalid for array configuration", async () => {
mock("./ldx.config.js", { "key": "value" });
const { validateConfig } = await import("./ldx.js");
const result = validateConfig(["item1", "item2"]);
expect(result.valid).toBe(false);
expect(result.error).toBe("Configuration must be a non-null object.");
});
test("returns invalid for empty configuration", async () => {
mock("./ldx.config.js", { "key": "value" });
const { validateConfig } = await import("./ldx.js");
const result = validateConfig({});
expect(result.valid).toBe(false);
expect(result.error).toBe("Configuration cannot be empty.");
});
test("returns invalid for configuration with invalid value type", async () => {
mock("./ldx.config.js", { "key": "value" });
const { validateConfig } = await import("./ldx.js");
const result = validateConfig({
"validKey": "validValue",
"invalidKey": 12345,
});
expect(result.valid).toBe(false);
expect(result.error).toBe(
'Invalid value type for key "invalidKey". Expected string or function, got number.'
);
});
test("returns invalid for configuration with object value", async () => {
mock("./ldx.config.js", { "key": "value" });
const { validateConfig } = await import("./ldx.js");
const result = validateConfig({
"key": { nested: "object" },
});
expect(result.valid).toBe(false);
expect(result.error).toBe(
'Invalid value type for key "key". Expected string or function, got object.'
);
});
});