Created
December 6, 2023 13:28
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Easily audit the difference between two dart objects in a failed test
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| #!/usr/bin/env sh | |
| # # These functions make it easy to look at the output of a dart | |
| # # test with large non-matching objects. | |
| # | |
| # # To use: | |
| # # One and done: | |
| # auditDartTest test/example_test.dart 'this test fails' | |
| # | |
| # # Or, if you want to check intermediate outputs: | |
| # # Create the reference json file | |
| # runAndSaveDartTest test/example_test.dart 'this test fails' | |
| # auditDartTestFailure temp_file.json | |
| # ... output ... | |
| # rm temp_file.json | |
| runAndSaveDartTest(){ | |
| flutter test -r json $1 --name $2 > temp_file.json | |
| } | |
| auditDartTest(){ | |
| flutter test -r json $1 --name $2 > temp_file.json | |
| auditDartTestFailure temp_file.json | |
| rm temp_file.json | |
| } | |
| auditDartTestFailure(){ | |
| cat $1 | extractErrorMessage > temp_error_msg | |
| extractObjects temp_error_msg > temp_objects | |
| echo $( diffExpectedActual temp_objects ) | |
| rm temp_error_msg | |
| rm temp_objects | |
| } | |
| extractErrorMessage(){ | |
| cat $1 | jq -s 'map(select(.message != null)) | .[] | {message} | join("")' | grep "EXCEPTION" | sed 's/.*Expected/Expected/' | sed 's/\\n\\nWhen.*//' | |
| } | |
| extractObjects(){ | |
| input=$(cat $1) | |
| actual=$( echo -n $input | tr -d '\n' | sed 's/.*Actual/Actual/' | awk '{$1=$1};1' ) | |
| expected=$( echo -n $input | tr -d '\n' | sed 's/Actual.*//' | awk '{$1=$1};1' ) | |
| echo "$expected\n$actual\n" | |
| } | |
| diffExpectedActual(){ | |
| input=$(cat $1) | |
| actual=$( echo "$input" | tail -n 1 ) | |
| expected=$( echo "$input" | head -n 1 ) | |
| git --no-pager diff --color=always $(echo "$expected" | git hash-object -w --stdin) $(echo "$actual" | git hash-object -w --stdin) --word-diff | tail -n +6 | |
| } |
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