//[example_output
# content of the file
> more test_file.txt
10.2 30.4
10.3 30.2
15.987984 15.9992
15.997984 15.9962

# Example run 1
> runtime_configuration4 --log_level=all  -- --test-file test_file.txt 
Running 2 test cases...
Entering test module "runtime_configuration4"
test.cpp:107: Entering test suite "command_line_test_file"
test.cpp:107: Entering test case "_0"
test.cpp:108: info: check input <= expected has passed
Assertion occurred in a following context:
    input = 15.9879837; expected = 15.9991999; 
test.cpp:107: Leaving test case "_0"; testing time: 433us
test.cpp:107: Entering test case "_1"
test.cpp:108: error: in "command_line_test_file/_1": check input <= expected has failed [15.9979839 > 15.9961996]
Failure occurred in a following context:
    input = 15.9979839; expected = 15.9961996; 
test.cpp:107: Leaving test case "_1"; testing time: 114us
test.cpp:107: Leaving test suite "command_line_test_file"; testing time: 616us
Leaving test module "runtime_configuration4"; testing time: 881us

*** 1 failure is detected in the test module "runtime_configuration4"

# Example run 2
> runtime_configuration4 --log_level=all  -- --test-file non-existant.txt
Test setup error: Cannot open the file 'non-existant.txt'

# Example run 3
> runtime_configuration4 --log_level=all
Test setup error: Incorrect number of arguments
//]
