a2kit 2.2.0

Apple II disk image and language utility
Documentation 
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#[cfg(test)]
use super::renumber::Renumberer;


#[cfg(test)]
fn test_renumber(test_code: &str,expected: &str,beg: usize,end: usize,first: usize,step: usize,should_fail: bool) {
	let mut renumberer = Renumberer::new();
	let result = renumberer.renumber(test_code, beg, end, first, step);
	match should_fail {
		true => if let Ok(_actual) = result {
			// if renumbering should fail, but instead works, the test has failed
			assert!(false);
		},
		false => if let Ok(actual) = renumberer.renumber(test_code, beg, end, first, step) {
			assert_eq!(actual,String::from(expected)+"\n");
		}
	}
}

mod valid_cases {
    #[test]
	fn zero_start() {
		let test_code = "0 HOME\n20 PRINT X\n30 END";
		let expected = "100 HOME\n101 PRINT X\n102 END";
		super::test_renumber(test_code, expected,0,usize::MAX,100,1,false);
	}
    #[test]
	fn largest_num() {
		let test_code = "0 HOME\n20 PRINT X\n30 END";
		let expected = "63993 HOME\n63996 PRINT X\n63999 END";
		super::test_renumber(test_code, expected,0,usize::MAX,63993,3,false);
	}
    #[test]
	fn segment() {
		let test_code = "10 HOME\n20 INPUT X\n30 PRINT X\n40 END";
		let expected = "10 HOME\n27 INPUT X\n29 PRINT X\n40 END";
		super::test_renumber(test_code, expected,20,40,27,2,false);
	}
}

mod invalid_cases {
    #[test]
	fn breaks_lower_bound() {
		let test_code = "10 HOME\n20 PRINT X\n30 END";
		let expected = "";
		super::test_renumber(test_code, expected,20,usize::MAX,9,1,true);
	}
    #[test]
	fn breaks_upper_bound() {
		let test_code = "10 HOME\n20 PRINT X\n30 END";
		let expected = "";
		super::test_renumber(test_code, expected,0,30,25,5,true);
	}
    #[test]
	fn breaks_max() {
		let test_code = "10 HOME\n20 PRINT X\n30 END";
		let expected = "";
		super::test_renumber(test_code, expected,0,usize::MAX,63800,100,true);
	}
}