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Format Test Results As A JSON File

The most common output format for RSpec test results is progress which shows the dot (.) or F for each test pass and fail. RSpec supports other formats, including JSON.

You'd typically want to use the JSON format when you want to programmatically work with the results. And the results would be most accessible if they ended up in a file.

So, when formatting the results to JSON, we typically also want to specify an output file. We'll need to use two flags — --format and --out.

$ rspec --format json --out test_run_1.json

When this test run completes, we will have the results in JSON format in the newly created test_run_1.json file in the current directory.

See rspec --help for more details.