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Normally, the ETL developers as part of the development effort will do unit. These test include some spot tests and summary tests. A unit ETL test is a test written by the programmer to verify that a relatively small piece of ETL code is doing what it is intended to do. They are narrow in scope, they should be easy to write and execute, and their effectiveness depends on what the programmer considers to be useful.Only if the unit ETL testing is done by developers, then the project will face many fundamental issues and limitations such as the following:.

• Etl Developer Skills

It breaks the 4-eyes principle. The four eyes principle is a requirement that two individuals approve some action before it can be taken. The four eyes principle is sometimes called the two-man rule or the two-person rule. Two activities are bound in a way that the person performing the first of these activities is not allowed to perform the second one also. The tests are based on the technical specs of the ETL process developed for the or project.

These specs only have transformation rules and not ETL testing or ETL auditing requirements. The ETL developer is the tester, hence biased by his development knowledge.

The ETL developer has limited QA toolset for ETL testing of the process. A unit ETL test does not have dependencies on ETL code outside the unit tested. You decide what the unit is by looking for the smallest testable part.Beyond the core issues there are many types of tests and processes that can be missed due to limited unit ETL testing mandate of the developer:.

The quality assurance phase has a holistic approach towards ETL testing by involving integration testing, regression testing, functional testing, and user acceptance testing. The integration tests involve dependencies on outside systems beyond an individual ETL process. As an example, unit ETL testing will involve shipment transaction checking. Which might be correct by itself, but an integration testing has an extended scope of reconciling shipment transaction with orders. However, are there shipments without an order? Without orders, there can be no transactions.

An integration test is done to demonstrate that different pieces of the system work together. If more than one process is running in the orchestrated manner and if any process is implemented in an improper sequence, then the result will be wrong. The sequence of execution tests is also an integral part of the integration tests. Integration tests cover entire applications, and they require much more effort to put together. In reality “integration test” gets used for a wide variety of things, from full-on system tests against an environment made to resemble production. While unit ETL test is just a limited test an individual process.

Regression tests are essential when a new change is introduced in the processing system. The new change can be minimally or substantially impactful. Therefore, the introduced change can cause an issue in the result set. For example, if a new commission calculation is introduced, management should ensure all other attributes such as gross cost, fees remain consistent, but the commission amount should reflect the transition. Functional tests check a particular feature for correctness by comparing the results for a given input against the specification. Functional tests don’t concern themselves with intermediate results. For example, the data might be loaded in multiple steps.

But from the functional test point of view, only the final dataset is meaningful. Is the shipment quantity in the final table matches to my total orders?. One of the key differentiators is also the involvement of business users. The acceptance test suite is run against the supplied input data and verifies the end results. Many of the process requirement is documented.

During user acceptance testing the business users can check if the business specifications are interpreted correctly by the technical specification and the code by verifying the final data results.Beyond these fundamental issues, QA teams are better equipped, trained towards finding the flaws, have better processes and methodologies, and are empowered with purpose built ETL testing software like iCEDQ for Data Migration or Data Warehouse systems/ projects. This allows them to conduct full volume ETL testing instead of sampling. They can automate ETL testing. The tests are better documented and transparent to management and release managers thus lowering the risk of a data-centric project.

Every day I keep on getting several requests for Test Case Template. And I'm surprised that many testers are still documenting test cases with Word docs or Excel files.Most of them prefer excel spreadsheets because they can easily group test cases by test types and most importantly they can easily get test metrics with Excel formulas. But I’m sure that as the volume of your tests goes on increasing, you will find it extremely difficult to manage.If you are not using any Test case management tool, then I would strongly recommend you to use an open-source tool to manage and execute your test cases. Test case formats may vary from one organization to another. But using a standard test case format for writing test cases is one step closer to set up a testing process for your project.It also minimizes that is done without proper test case documentation.

But even if you use standard templates, you need to set up test cases writing, review & approve, test execution and most importantly test report preparation process, etc by using manual methods.Also if you have a process to review the test cases by the business team, then you must format these test cases in a template that is agreed by both the parties. What You Will Learn:.Recommended ToolsBefore continuing to the Test case writing process, we recommend downloading these Test case management tools. This will ease your test plan and test case writing process mentioned in this tutorial.

#1) TestRail=#2) TestMonitorTestMonitor – Top-level online Test Management. Revolutionary easy.TestMonitor is an end-to-end test management tool for every organization. A simple, intuitive approach to testing. Whether you’re implementing enterprise software, need QA, building a quality app or just need a helping hand in your test project, TestMonitor has you covered.=Here is how to make this manual test case management process a bit easier with the help of simple testing templates.Note:I've listed the maximum number of fields related to a test case.

But it is advised to use only those fields which are used by your team. Also, if you think any field used by your team is missing from this list, then feel free to add it to your customized template. Standard Fields Of A Sample Test Case TemplateThere are certain standard fields to be considered while preparing a Test case template.Several standard fields of a sample Test Case template are listed below.Test case ID: Unique ID is required for each test case.

Follow some convention to indicate the types of the test. For Example, ‘TCUI1' indicating ‘user interface test case #1'.Test priority (Low/Medium/High): This is very useful while test execution. Test priority for business rules and functional test cases can be medium or higher whereas minor user interface cases can be of a low priority. Test priority should always be set by the reviewer.Module Name: Mention the name of the main module or the sub-module.Test Designed By Name of the Tester.Test Designed Date: Date when it was written.Test Executed By Name of the Tester who executed this test. To be filled only after test execution.Test Execution Date: Date when the test was executed.Test Title/Name: Test case title. For Example, verify the login page with a valid username and password.Test Summary/Description: Describe the test objective in brief.Pre-conditions: Any prerequisite that must be fulfilled before the execution of this test case. List all the pre-conditions in order to execute this test case successfully.Dependencies: Mention any dependencies on the other test cases or test requirements.Test Steps: List all the test execution steps in detail.

Write test steps in the order in which they should be executed. Make sure to provide as many details as you can. Pro Tip: In order to manage a test case efficiently with a lesser number of fields use this field to describe the test conditions, test data and user roles for running the test.Test Data: Use of test data as an input for this test case. You can provide different data sets with exact values to be used as an input.Expected Result: What should be the system output after test execution? Describe the expected result in detail including message/error that should be displayed on the screen.Post-condition: What should be the state of the system after executing this test case?Actual result: The actual test result should be filled after test execution.

Etl Developer Skills

Describe the system behavior after test execution. Status (Pass/Fail): If an actual result is not as per the expected result, then mark this test as failed. Otherwise, update it as passed.Notes/Comments/Questions: If there are some special conditions to support the above fields, which can’t be described above or if there are any questions related to expected or actual results then mention them here.Add the following fields if necessary:Defect ID/Link: If the test status is failed, then include the link to the defect log or mention the defect number.Test Type/Keywords: This field can be used to classify the tests based on test types. For Example, usability, business rules, etc.Requirements: Requirements for which this test case is being written for.

Preferably the exact section number of the requirement doc.Attachments/References: This field is useful for complex test scenarios in order to explain the test steps or expected results using a Visio diagram as a reference. Provide the link or location to the actual path of the diagram or document.Automation? (Yes/No): Whether this test case is automated or not. It is useful to track the automation status when test cases are automated.With the help of the above fields, I've prepared an example test case template for your reference.

Download Test Case Template With Example (Format #1)– and–Also, here you can refer a few more articles on writing effective. Use these test writing guidelines and the above template to write and manage the test cases effectively on your project.Sample Test Cases:Tutorial #1: One More Test Case Format (#2)Undoubtedly, the test cases will differ depending upon the functionality of the software that it is intended for.