emmylua_code_analysis 0.22.0

A library for analyzing lua code.
Documentation 
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#[cfg(test)]
mod test {
    use crate::{DiagnosticCode, VirtualWorkspace};

    #[test]
    fn test_issue_392() {
        let mut ws = VirtualWorkspace::new();
        assert!(ws.check_code_for(DiagnosticCode::UnnecessaryIf,
        r#"
        local a = false ---@type boolean|nil
        if a == nil or a then -- Unnecessary `if` statement: this condition is always truthy [unnecessary-if]
            print('a is not false')
        end
        "#
        ));
    }

    #[test]
    fn test_issue_396() {
        let mut ws = VirtualWorkspace::new();
        assert!(ws.check_code_for(DiagnosticCode::UnnecessaryIf,
        r#"
        local a = false ---@type 'a'|'b'
        if a ~= 'a' then -- Unnecessary `if` statement: this condition is always truthy [unnecessary-if]
        end
        "#
        ));
    }
}