JavaScript/TypeScriptA good way to write our own Node-RED node for the testability
I have used Node-RED for more than 3 years for my working project. I came up with a good idea to write our own node for...
Unit Test
JavaScript/TypeScript
JavaScript/TypeScriptTop-Level function cannot be stubbed if it is exported by an asterisk
A top-level function is not a part of an object. If we need to stub it, we need to have an object that has the target f...
JavaScript/TypeScriptWhat is the difference between Stub and Mock
In a unit test, we need to replace a real behavior with a test object but the variable name is sometimes xxxxStub for m...
JavaScript/TypeScriptTypeScript Stub Date and timer friends functions with sinon
When Date class, timer friends functions like setTimeout, and setInterval are used in a function, we need to control th...
JavaScript/TypeScriptHow to determine test values for unit testing
Are you a beginner at unit testing? Are you not confident enough to choose the test cases? You are not alone. Let's lea...
JavaScript/TypeScriptTypeScript Stub Top Level function by Sinon
Functions called in a different function are not always class members. They are often top-level functions which are not...
JavaScript/TypeScriptHow to mock fs.readdir and fs.readFile for unit testing
Reading a directory to get a file list and then, loading the file one by one. You might have seen such a function. If i...
JavaScript/TypeScriptHow to inject user input data for unit tests
Some console applications require user inputs. For those inputs, we need to write unit tests. If we using readline modu...
JavaScript/TypeScriptHow to start Unit Testing in TypeScript with mocha and chai
Writing unit tests is an important step to be an intermediate developer from a beginner. The developers who can't write...
JavaScript/TypeScriptChai Object array comparison
I needed to write tests for object array but I spent time on how to write it. I write down how to do it to save my time...