React Testing
Type of Tests Easier to run Which test to perform ? Unit test is easier to maintain but e2e test give more confidence Test throws an error when excpected output is not matched in o/p CRA contains both testing library first arg -> test name secodn arg -> i) render method create a virtual dom ii) screen gives us method to query v Dom In this image we are finding an case insensitive arg learn react We notice that we are finding it in the doc expect is globably imported by jest so we dont need to manually import it so we are using both testing libary at the same time. Test Driven Development Jest watch mode Filtering test p to use regex pattern or only search pattern adding only does that particular test test.skip does that reverse Grouping Test we can also use only and skip with describe as well Possible to nest describes 1 f...