Unable to save HAR file when a CypressError is raised during the test

[gavinhenderson]

This spec DOES NOT generate a har file when run.

describe("Smoke", () => {
  beforeEach(() => {
    cy.recordHar();
  });

  afterEach(() => {
    cy.saveHar({ fileName: "smoke.har" });
  });

  it(["pre-deploy"], "loads the webpage without any issues", () => {
    cy.visit("https://website-that-doesnt-exist.com");
  });
});

I would expect the above spec to fail because it will get an ENOTFOUND error, however I would still like a HAR file in this case.

If you tweak it to this then it does generate a HAR file.

describe("Smoke", () => {
  beforeEach(() => {
    cy.recordHar();
  });

  afterEach(() => {
    cy.saveHar({ fileName: "smoke.har" });
  });

  it(["pre-deploy"], "loads the webpage without any issues", () => {
    cy.visit("https://google.com");
  });
});

If you make the version pointing to a valid website fail in a different way then it will still generate a HAR file. For example, this fails but will still give you a HAR.

describe("Smoke", () => {
  beforeEach(() => {
    cy.recordHar();
  });

  afterEach(() => {
    cy.saveHar({ fileName: "smoke.har" });
  });

  it(["pre-deploy"], "loads the webpage without any issues", () => {
    cy.visit("https://google.com");
    cy.get("body").should("not.exist");
  });
});

Ideally, I would like all three to still generate a HAR file to allow me to debug what is causing the CypressError.

[derevnjuk]

@gavinhenderson unfortunately, there is no quick fix. Cypress uses cy.request handling cy.visit sending requests via some proxy, outside of the browser. Perhaps, it can be solved by #59 intercepting the requests made by cy.request (simular to #48).

[gavinhenderson]

Hey @derevnjuk thanks for the reply and explanation. I had assumed that cy.visit was doing requests via the browser but I can now see what you mean about it happening outside the browser. This, isn't really a problem for me anymore because I have solved the root of the problem for my site so feel free to close this issue

[derevnjuk]

@gavinhenderson I'll keep the issue open to verify it while working on issue #59. Currently, converted to a feature request.

[bartonhammond]

Question: When I have an error, the ScreenShot is done and I can trap that event
Is there a way to generate the HAR from here?

const { defineConfig } = require('cypress')
module.exports = defineConfig({
  e2e: {
    setupNodeEvents(on, config) {
      on('after:screenshot', (details) => {
        /* 
       is there a way to save the HAR file from here?
       I tried  cy.saveHar but get an error that cy is not defined
       */
      })
    },
  },
})