How to use the fail function from assert

Find comprehensive JavaScript assert.fail code examples handpicked from public code repositorys.

assert.fail() throws an AssertionError with a message if a certain condition is not met.

steps.js

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When(
  'we make a Pending Transaction Information against txid {string} with format {string}',
  async function (txid, format) {
    if (format !== 'msgpack') {
      assert.fail('this SDK only supports format msgpack for this function');
    }
    await this.v2Client.pendingTransactionInformation(txid).do();
  }
);

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264

+ 7 other calls in file

propertiesCommon.js

GitHub: F5Networks/f5-appsvcs-extension

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    }
    if (!getProvisionedModules().includes(module)) {
        if (process.env.SKIP_TEST_IF_UNPROVISIONED === 'true') {
            this.skip(`${testName} skipped: ${module} must be provisioned`);
        }
        assert.fail(`${module} must be provisioned for ${testName}`);
    }
}


function assertMultipleItems(as3Class, properties, count, sharedObjects, constantsOptions) {

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How does assert.fail work?

assert.fail() is a function provided by Node.js's built-in assert module that can be used to forcefully throw an AssertionError. It accepts an optional error message and an optional constructor that can be used to customize the error thrown. If no error message is provided, a default one is used.

test.js

GitHub: F5Networks/f5-declarative-onboarding

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                assert.strictEqual(responseBody.status, 'ERROR');
            }
        })
        .catch((error) => {
            logger.info(`got error ${error}`);
            assert.fail(error);
        });
}

it('should return 422 without using a query parameter',

postgres.js

GitHub: thylacine/websub-hub

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it('fails low version', async function () {
  const version = { major: 0, minor: 0, patch: 0 };
  sinon.stub(db.db, 'one').resolves(version);
  try {
    await db.initialize(false);
    assert.fail(noExpectedException);
  } catch (e) {
    assert(e instanceof DBErrors.MigrationNeeded);
  }
});

+ 54 other calls in file

Ai Example

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const assert = require("assert");

function add(a, b) {
  return a + b;
}

function multiply(a, b) {
  return a * b;
}

function test() {
  let result = add(2, 3);
  assert.equal(result, 5, "Addition failed");

  result = multiply(2, 3);
  assert.equal(result, 6, "Multiplication failed");

  assert.fail("This test should fail");
}

test();

In this example, the assert.fail function is used to intentionally fail a test case, as it will always throw an AssertionError with the given message.

api.js

GitHub: HomieOmie/nodebb-temp

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    obj = { properties: flattenAllOf(obj.allOf) };
} else {
    try {
        required = required.concat(obj.required ? obj.required : Object.keys(obj.properties));
    } catch (e) {
        assert.fail(`Syntax error re: allOf, perhaps you allOf'd an array? (path: ${method} ${path}, context: ${context})`);
    }
}

return { ...memo, ...obj.properties };

spec.snapshot-worker.js

GitHub: recordwright/recordwright

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    }
    await new Promise(resolve => setTimeout(resolve, 100))
    try {
        fs.accessSync(recordManager.browserControl.activeSnapshotWorker.records[1].path)
    } catch (error) {
        assert.fail('Unable to create html snapshot correctly in the disk')
    }

}).timeout(10000)
it('should queue multiple snapshot requests witin the same browser', async () => {

+ 3 other calls in file

Other functions in assert

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