public void NoCommonPrefixReturnsEmptyString()
{
var input = new[] { "cat", "bat", "hat" };
var lcp = new LongestCommonPrefix();
Assert.Equal("", lcp.longestCommonPrefix(input));
}
public void StringsCanShareCommonPrefix()
{
var input = new[] { "aab", "aabcd" };
var lcp = new LongestCommonPrefix();
Assert.Equal("aab", lcp.longestCommonPrefix(input));
}
public void ReturnsEmptyStringForNoInput()
{
var lcp = new LongestCommonPrefix();
Assert.Equal("", lcp.longestCommonPrefix(null));
}