TeamCity test run comparison

TeamCity provides CSV files that can be downloaded showing the test results from any build. This script compares two such files and computes the test-by-test differences in timing. This makes it easier to find tests with significantly different runtime between the two builds.

Usage

1. Download the CSV files you want from TeamCity.
2. Run dos2unix or a similar program on each of them, to fix up the line endings (otherwise the script won't work).
3. Invoke like:

tc_test_compare.sh file1.csv file2.csv