[Bug]: Configuration options don't seem to get passed on to vitest

[szpytfire]

Describe the bug

A couple of my interaction tests are failing due to Unhandled Errors caused by an upstream dependency I'm using.

The output of the interaction test kindly suggests the following:

Unhandled Errors
Found 1 unhandled error while running the play function. This might cause false positive assertions. Resolve unhandled errors or ignore unhandled errors with setting the test.dangerouslyIgnoreUnhandledErrors parameter to true.

After reading this, I tried adding the following snippet into my .storybook/main.ts configuration:

  viteFinal: async (config, ...rest) => {
    const extraConfig = {
      test: {
        dangerouslyIgnoreUnhandledErrors: true,
      },
    };

    if (storybookConfig.viteFinal) {
      return mergeConfig(
        storybookConfig.viteFinal(config, ...rest),
        extraConfig,
      );
    }
    return mergeConfig(config, extraConfig);
  }

However, the exception is still thrown (and the interaction test still states that I need to set the test.dangerouslyIgnoreUnhandledErrors param).

Is this expected? Are parameters passed through to vitest?

To Reproduce

System

System:
    OS: macOS 14.2.1
    CPU: (8) arm64 Apple M2
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.11.1 - ~/.nvm/versions/node/v20.11.1/bin/node
    Yarn: 4.1.0 - ~/.nvm/versions/node/v20.11.1/bin/yarn <----- active
    npm: 10.2.4 - ~/.nvm/versions/node/v20.11.1/bin/npm
    pnpm: 8.3.0 - /opt/homebrew/bin/pnpm
  Browsers:
    Chrome: 124.0.6367.94
    Safari: 17.2.1

Additional context

Relates to: xyflow/xyflow#2461

[jaknas]

@szpytfire You need to add it to your story parameters, see:

storybook/code/lib/preview-api/src/modules/preview-web/render/StoryRender.ts

Lines 242 to 243 in a17fe0b

	const ignoreUnhandledErrors =
	this.story.parameters?.test?.dangerouslyIgnoreUnhandledErrors === true;

[szpytfire]

Hey @jaknas - yep, thanks 🙏 I found this in the end after snooping around the storybook code 😄!

I wonder whether to help future users:

• The error message should be updated slightly to make it more obvious that you have to set the param on the story
• The dangerouslyIgnoreUnhandledErrors should be enabled at a global level (so that you don't have to set it on lots of individual stories)