#!/bin/sh

\. ../../../nvm.sh
\. ../../generated_semvers.sh

# nvm_is_normalized_semver validates that given semvers adhere to the following grammer
#
# semver         ::= comparator_set ( ' || '  comparator_set )*
# comparator_set ::= comparator ( ' ' comparator )*
# comparator     ::= ( '<' | '<=' | '>' | '>=' | '' ) [0-9]+ '.' [0-9]+ '.' [0-9]+

# POSITIVE TEST CASES

positive_test_cases="$VALID_NORMALIZED_SEMVERS"
if [ -z "$positive_test_cases" ]; then
  die 'positive test cases are empty'
fi

prev_semver=''
while [ -n "$positive_test_cases" ]; do
  semver=$(echo "$positive_test_cases" | head -n1)
  if [ -z "$semver" ] || ! nvm_is_normalized_semver "$semver"; then
    die "nvm_is_normalized_semver POSITIVE test case failed. semver: '$semver'.\n"
  fi
  if [ "$prev_semver" = "$semver" ]; then
    die "something is wrong. positive test cases received the same test case twice in a row. semver: '$semver'"
  fi
  prev_semver="$semver"
  positive_test_cases=$(echo "$positive_test_cases" | tail -n +2)
done

# NEGATIVE TEST CASES

negative_test_cases=$(printf "%s\n%s" "$VALID_NON_NORMALIZED_SEMVERS" "$INVALID_SEMVERS_FOR_PKG_JSON")
if [ -z "$negative_test_cases" ]; then
  die 'negative test cases are empty'
fi

prev_semver='initialized to non empty string'
while [ -n "$negative_test_cases" ]; do
  semver=$(echo "$negative_test_cases" | head -n1)
  if nvm_is_normalized_semver "$semver"; then
    die "nvm_is_normalized_semver NEGATIVE test case failed. semver: '$semver'.\n"
  fi
  if [ "$prev_semver" = "$semver" ]; then
    die "something is wrong. negative test cases received the same test case twice in a row. semver: '$semver'"
  fi
  prev_semver="$semver"
  negative_test_cases=$(echo "$negative_test_cases" | tail -n +2)
done
exit 0