tidyc_test

#!/bin/bash

# Run tests for tidyc.
#
# Each test checks the expected output for an input file with particular tidyc
# arguments. The input file and arguments are encoded in the expected output
# filename as follows;
#
# output: <testX>_arg1_arg2_[...].out
# input: <testX>.c
# args: -arg1 -arg2 [...]
#

# Expected outputs of tests to run on cmdline (Default: tests/*.out).
tests=${@:-tests/*.out}

# Run a cmd and fail the test if cmd fails.
run_test () {
  echo "Running: $@" >&2
  "$@" || fail_test
}

# Fail the test and exit.
fail_test () {
    echo "FAIL" >&2
    exit 2
}

# Run a test for a given expected output file.
do_test () {
  expect="$1"
  name=${expect%.out}
  input=${name%%_*}.c
  output=tests/output.c
  args="${name//_/ -} "; args=${args#* }
  echo
  echo $expect
  run_test ./tidyc $args <$input >$output
  run_test diff -q $expect $output
  run_test ./tidyc $args $output
  run_test diff -q $expect $output
  echo "PASS" 
  rm -f $output
}

for expect in $tests; do
  do_test $expect
done