Fixing `withQase` Issues With `it.each` In Vitest

Dec 3, 2025 by Alex Johnson 50 views

When integrating withQase from vitest-qase-reporter with it.each in Vitest, developers may encounter compatibility issues that can disrupt testing workflows. This article delves into these challenges, offering insights and potential solutions to ensure seamless integration. Understanding these nuances is critical for maintaining robust and reliable test suites.

Understanding the Problem

The core issue arises when using it.each in conjunction with withQase. The context provided by it.each tends to overwrite the context of withQase, leading to the loss of essential functionalities like qase and annotate. This interference complicates the process of associating test results with Qase test management system, undermining the purpose of using vitest-qase-reporter. It’s essential to grasp how these contexts interact to devise effective solutions.

Code Example Illustrating the Issue

Consider the following code snippet that demonstrates the problem:

import { withQase } from "vitest-qase-reporter/vitest";
import { describe, it, expect } from "vitest";
import { Awaitable } from "@vitest/utils";

describe("Some", () => {
 it.each([
 { id: 1, name: "Should be true" },
 { id: 2, name: "Should be false" },
 ])(
 "Should be true (Qase ID: $id)",
 withQase<[{ name: string }]>(async ({ qase, name, annotate }) => {
 console.log(name);

 await qase.step(name, () => {
 expect(true).toBe(true);
 });

 await qase.step(name, () => {
 expect(false).toBe(true);
 });
 }) as unknown as Awaitable<void>
 );
});

In this example, the values provided in the it.each array (id, name) inadvertently remove qase and annotate from the withQase function's context. This behavior disrupts the intended functionality, making it difficult to properly integrate with the Qase test management system. Addressing this issue is vital for ensuring that tests are accurately tracked and reported.

Context Overwriting Explained

The primary reason for this behavior is how it.each handles context within Vitest. When it.each iterates through its array of test cases, it sets its own context for each case. This context overwrites the one provided by withQase, which expects to inject qase and annotate into the test function. As a result, the test function loses access to these critical utilities, leading to integration failures. Understanding this context collision is the first step toward finding a resolution.

Type Compatibility Issues

Another challenge lies in the type compatibility between withQase and the callback function expected by it.each. The return type of withQase doesn't directly align with the expected type of the it.each callback, often necessitating workarounds like type assignments (e.g., Awaitable<void>). This discrepancy adds complexity to the code and indicates a need for a more seamless integration approach.

Addressing the `withQase` and `it.each` Incompatibility

To effectively use withQase with it.each in Vitest, developers need to address the context overwriting and type compatibility issues. Several strategies can be employed to mitigate these problems and ensure proper integration.

Workaround: Explicitly Passing Context

One approach is to explicitly pass the necessary context to the withQase function. This involves capturing the qase and annotate objects and passing them as arguments within the it.each loop. While this method can be verbose, it ensures that the required context is available within each test case.

describe("Some", () => {
 it.each([
 { id: 1, name: "Should be true" },
 { id: 2, name: "Should be false" },
 ])(
 "Should be true (Qase ID: $id)",
 async ({ id, name }) => {
 await withQase<[{ name: string }]>(async ({ qase, annotate }) => {
 console.log(name);

 await qase.step(name, () => {
 expect(true).toBe(true);
 });

 await qase.step(name, () => {
 expect(false).toBe(true);
 });
 })({ name }); // Explicitly pass 'name' context
 } as unknown as Awaitable<void>
 );
});

This workaround ensures that the name context is correctly passed to the withQase function, maintaining access to necessary parameters. However, this method requires careful management of context variables to avoid errors.

Alternative: Custom Wrapper Function

Another strategy is to create a custom wrapper function that encapsulates the withQase functionality and properly merges the contexts. This wrapper can handle the context merging and type compatibility issues, providing a cleaner and more maintainable solution. Such a function would accept the test case parameters and the test function, ensuring that all necessary context is available.

function withEachQase<T extends any[]>(testCases: T[], testName: string, testFn: (args: T[number] & { qase: any; annotate: any }) => Promise<void>) {
 it.each(testCases)(testName, async (testCase) => {
 await withQase(async ({ qase, annotate }) => {
 await testFn({ ...testCase, qase, annotate });
 })();
 });
}

describe("Some", () => {
 withEachQase([
 { id: 1, name: "Should be true" },
 { id: 2, name: "Should be false" },
 ],
 "Should be true (Qase ID: $id)",
 async ({ qase, name }) => {
 console.log(name);

 await qase.step(name, () => {
 expect(true).toBe(true);
 });

 await qase.step(name, () => {
 expect(false).toBe(true);
 });
 }
 );
});

This approach abstracts away the complexity of context management, making the test code cleaner and easier to understand. The withEachQase function ensures that the test function always has access to the necessary context.

Enhancements to `vitest-qase-reporter`

Ideally, the vitest-qase-reporter package should be updated to handle it.each scenarios more gracefully. This could involve modifying the withQase function to automatically merge contexts or providing a separate utility specifically designed for use with it.each. Such enhancements would greatly improve the developer experience and reduce the need for manual workarounds.

Implications for Other Test Runners

The issues encountered with withQase and it.each in Vitest are not unique to this testing framework. Similar problems can arise in other test runners like Jest, where steps and similar utilities might also exhibit compatibility issues. The underlying cause often lies in how these runners manage context and interact with reporting tools.

Lessons from Jest

Jest users have reported similar challenges with step implementations and context management. These experiences highlight the need for test runner developers to provide better support for integrating with external reporting tools. Standardizing context handling and offering more flexible APIs can help alleviate these issues.

General Best Practices

To mitigate these problems across different test runners, consider the following best practices:

Understand Context Management: Familiarize yourself with how your chosen test runner handles context within test cases.
Use Wrapper Functions: Create custom wrapper functions to manage context and ensure that necessary utilities are available.
Contribute to Open Source: If you encounter compatibility issues, consider contributing to the open-source projects to help improve integration.
Stay Updated: Keep your test runner and reporting tool packages updated to benefit from the latest bug fixes and enhancements.

Conclusion

Integrating withQase with it.each in Vitest requires careful attention to context management and type compatibility. By understanding the underlying issues and employing appropriate workarounds or custom solutions, developers can ensure seamless integration and accurate test reporting. Addressing these challenges not only improves the reliability of test suites but also enhances the overall development workflow. It’s essential to stay informed about updates to both Vitest and vitest-qase-reporter to take advantage of any improvements that simplify this integration process.

For further reading on Vitest and its features, refer to the official Vitest documentation. This resource provides comprehensive information and guidance on using Vitest effectively.