compareChars(char2, char1) == Character.compare(char2, char1)
        !equalChars(char1, char2, CASE_SENSITIVE)
        equalChars(char1, char2, CASE_INSENSITIVE) == (caseInsensitiveResult == 0)
        !equalChars(char2, char1, CASE_SENSITIVE)
        equalChars(char2, char1, CASE_INSENSITIVE) == (caseInsensitiveResult == 0)

        where:
        left | right | result

        compareCharsIgnoringCase(backslash, slash) == 0
        compareChars(slash, backslash) == 0
        compareChars(backslash, slash) == 0
        equalChars(slash, backslash, caseSensitivity)
        equalChars(backslash, slash, caseSensitivity)
    }

    def "can compare path separator chars correctly (#left - #right = #result)"() {
        def char1 = left as char

import static org.gradle.internal.snapshot.PathUtil.compareChars;
import static org.gradle.internal.snapshot.PathUtil.compareCharsIgnoringCase;
import static org.gradle.internal.snapshot.PathUtil.equalChars;
import static org.gradle.internal.snapshot.PathUtil.isFileSeparator;

/**
 * A relative path represented by a path suffix of an absolute path.
 *

                ? 0
                : -1
            : isFileSeparator(char2)
                ? 1
                : Character.compare(char1, char2);
    }

    @VisibleForTesting
    static boolean equalChars(char char1, char char2, CaseSensitivity caseSensitivity) {
        if (char1 == char2) {
            return true;
        }
        if (isFileSeparator(char1) && isFileSeparator(char2)) {
            return true;