/****************************************
*  NOTICE
*  ______________________________________
*
*  Copyright 2023 Tony Nguyen
*  
*  Project:
*      Name: to_snake_case
*      Links:
*         - https://gitlab.com/t101/to_snake_case
*
*      Modified: 20-Feb-2023
*  ______________________________________
* 
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
* 
*      http://www.apache.org/licenses/LICENSE-2.0
* 
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*
******************************************/

#[cfg(test)]
mod test_pascal_case {
    use to_snake_case::ToSnakeCase;

    #[test]
    fn test_pascal_case() {
        let expected = "to_snake_case";

        let input = String::from("ToSnakeCase");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_with_space() {
        let expected = "to snake case";

        let input = String::from("To Snake Case");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_pascal_case_short_word_one_letter() {
        let expected = "a";

        let input = String::from("a");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_pascal_case_short_word_two_letters() {
        let expected = "ab";

        let input = String::from("Ab");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_pascal_case_end_capital() {
        let expected = "ab_c";

        let input = String::from("AbC");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }


    #[test]
    fn test_pascal_case_with_acronym_at_end() {
        let expected = "to_ascii";

        let input = String::from("ToASCII");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_pascal_case_with_acronym_at_start() {
        let expected = "ascii_from";

        let input = String::from("ASCIIFrom");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_pascal_case_with_acronym_at_start_short_text() {
        let expected = "a_bc";

        let input = String::from("ABc");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }

    #[test]
    fn test_pascal_case_with_acronym_at_end_short_text() {
        let expected = "ab_cd";

        let input = String::from("AbCD");
        let output = input.to_snake_case();
        assert_eq!(expected, &output);
    }
}