#!/bin/bash
# pathtest -- run a series of path tests on RoadNetwork.txt
#             this source file must be made executable, eg chmod +x pathtest
# author: Douglas W. Jones
# version: Sept. 22, 2020

#   the directory tests must exist
#   for test N, there must be a file tests/expN, holding the expected output
#   when running test N, the actual output will go in file tests/outN

#   if you change the program in a way that changes the output for test N,
#    a) if the failure found a bug, fix the program so the output is correct
#    b) if the new output is correct (because you improved the program) do
#         mv tests/outN tests/expN
#       in order to update things so the script expects the new output

#   as features are added to the program, add tests!

#######
# test 1: path 1 in main, missing parameter
java RoadNetwork 2> tests/out1
if diff tests/out1 tests/exp1 ; then
    echo "test 1 success"
else
    read -p "Test failure -- path 1 in main, missing parameter"
fi

#######
# test 2: path 3 in main, nonexistant input file
rm test
java RoadNetwork test 2> tests/out2
if diff tests/out2 tests/exp2 ; then
    echo "test 2 success"
else
    read -p "Test failure -- path 3 in main, nonexistant input file"
fi

#######
# test 3: path 2 in main, empty input file, path 1 in buildmodel
echo "" > test
java RoadNetwork test 2> tests/out3
if diff tests/out3 tests/exp3 ; then
    echo "test 3 success"
else
    read -p "Test failure -- path 2 in main, empty input, path 1 in buildmodel"
fi

#######
# test 4: main path 2, path 1 in buildmodel, just an invalid command
echo "gribble" > test
java RoadNetwork test 2> tests/out4
if diff tests/out4 tests/exp4 ; then
    echo "test 4 success"
else
    read -p "Test failure -- path 1 in buildmodel, just an invalid command"
fi