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path: root/comp2041/tigger/test02.sh
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#!/bin/dash

# Test startup, create a temporary directory and cd into it with files.
tmp_dir=$(mktemp --directory --quiet --tmpdir=./)
if [ "$(find tigger-* | wc -l)" -le 0 ]; then
  printf "error: no tigger commands found, cannot run tests\n" >&2
  exit 1
fi
cp tigger-* "$tmp_dir"/
cd "$tmp_dir" || exit

# Functions to test if the return value was 0 or non-zero.
assert_good_exec () {
  printf "%s: " "$1"
  if $1; then
    return
  fi
  printf "test failed, previous command expected zero output code\n" >&2
  rm -rf ../"$tmp_dir"
  exit 1
}
# Functions to test if the return value was 0 or non-zero.
assert_bad_exec () {
  printf "%s: " "$1"
  if ! $1; then
    return
  fi
  printf "test failed, previous command expected non-zero output code\n" >&2
  rm -rf ../"$tmp_dir"
  exit 1
}
printf "starting tests: output and order will be printed\n\n"
# End of test startup

# The purpose of this test is to ensure that there are no arbitrary limits on
# the amount of times a command may be performed, and that file 
# creation/deletion and increment logic is handled correctly between commits.
# It's possible that this fails due to bad increment handling at the radix 
# point (if a program is implemented incorrectly). This test might also expose
# complexity issues if they are present.

# Specifically we might use sort as opposed to sort -n, which works until 10.
# ... i did :(

assert_good_exec "./tigger-init"
printf "adding and committing large number of files...\n"
for _ in $(seq 25); do
  echo "repeated\n" >> repeated
  assert_good_exec "./tigger-add repeated" > /dev/null
  assert_good_exec "./tigger-commit -m placeholder" > /dev/null
done

# Commit count should be 50 here!
printf "testing commit count string result\n"
printf "repeated\n" >> repeated
assert_good_exec "./tigger-add repeated" > /dev/null
if [ "$(./tigger-commit -m placeholder)" != "Committed as commit 25" ]; then
  printf "bad commit count string\n" >&2
  exit 0
fi

# New one added so 26 now.
printf "testing tigger-log line count\n"
assert_good_exec "./tigger-log" > /dev/null
if [ "$(./tigger-log | wc --line)" -ne 26 ]; then
  printf "bad tigger log string length\n" >&2
  exit 0
fi

# Test teardown/cleanup
printf "\ntest completed successfully\n"
rm -rf ../"$tmp_dir"
exit 0