Testing the Initial CLI Implementation
Learn how to create test cases for the CLI implementation.
We can use different approaches to test our CLI tool. Since we already executed unit tests when developing the to-do API, we don’t need to repeat them here. Our CLI implementation is a wrapper around the API. Let’s leverage
some of Go’s features and write
Benefits of Go
One of the main benefits of Go is that it provides tools for automating the execution of tests out of the box; no additional frameworks or libraries are required.
Since we write tests using Go itself, we can use any resources and features
available with the language to write our test cases. In this case, we’ll use the
os/exec
package, which lets us execute external commands.
For this test suite, we need to accomplish two main goals:
- Use the
go build
tool to compile the program into a binary file. - Execute the binary file with different arguments and assert its correct behavior.
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