SelectFile fails to handle Parquet and ORC file types

[SWEJaber]

Current behavior

I'm working on an app that lets users upload .parquet and .orc files, and I'm writing tests for this using selectFile, but it looks like the files get corrupted before they’re uploaded. I’ve attached a zip file containing the test files before and after upload for reference: Test Files.zip

I also tested uploading parquet files both manually and through Cypress on this parquet viewer website: https://vizly.ai/tools/parquet-viewer. While it does display the contents of the parquet file, it also throws an error.

Tested Manually

Screen.Recording.2025-07-03.at.12.19.38.PM.mov

Tested on Cypress

Screen.Recording.2025-07-03.at.12.17.32.PM.mov

Desired behavior

Cypress should upload .orc and .parquet files without modifying them.

Test code to reproduce

parquet test project.zip

Cypress Version

v13.15.1

Node version

v22.14.0

Operating System

macOS 14.3

Debug Logs

Other

No response

[AtofStryker]

Thanks for filing this @SWEJaber. I don't think it will change the outcome, but have you tried using a more recent version of Cypress? The installed version is 13.15.1 in the reproduction you have provided.

[SWEJaber]

@AtofStryker No problem. I'm still facing the same issue after upgrading to ^14.5.1.

[Srimathi-S]

@SWEJaber

You can successfully upload the file using the "select" action. For example, the following code works:

cy.get('input[type="file"]')
  .selectFile("{root_path}/parquet test project/cypress/fixtures/PARQUET_0.25_MB__0847e3255f2c4d73931662de52152a5e.parquet", { action: "select", force: true });

Alternatively, this also works:

cy.get('input[type="file"]').then(input => {
  // Use native browser file selection directly via subject
  cy.wrap(input).selectFile(parquet, { force: true });
});

In both of these cases, Cypress leverages the native JavaScript File API for file type handling.

---

However, the drag-and-drop action likely fails because Cypress attempts to use mime.getType("filename.extension") to find the extension. For mime.getType("fileName.parquet"), the mime package doesn't have a supported type, which causes the failure.

[SWEJaber]

@Srimathi-S parquet files work with the select action, but Cypress is inconsistent with orc.

On one hand, the orc file contained in orcFile.orc.zip works manually and on Cypress, on the other hand, Cypress corrupts ORC_3.0_MB_3.0_animal.orc.zip, but it works when tested manually.

I couldn't find a good online orc viewer, so I've attached two files for reference (one uploaded manually, and another with cypress): cypress_orc_upload_issue.zip