// SC2251: This condition will never be true (placeholder - requires symbolic execution)
use crate::linter::LintResult;

pub fn check(_source: &str) -> LintResult {
    // Placeholder: Complex rule requiring symbolic execution to detect impossible conditions
    // Would need to track variable states and evaluate conditions
    // Implementation deferred pending advanced static analysis
    LintResult::new()
}

#[cfg(test)]
mod tests {
    use super::*;
    #[test]
    fn test_sc2251_placeholder() {
        let code = r#"if [ "$var" = "x" ] && [ "$var" = "y" ]; then"#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2251_valid_condition_placeholder() {
        let code = r#"if [ "$a" = "x" ] && [ "$b" = "y" ]; then"#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2251_comment_placeholder() {
        let code = "# comment";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0);
    }
    #[test]
    fn test_sc2251_no_code_placeholder() {
        let code = "";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0);
    }
    #[test]
    fn test_sc2251_simple_placeholder() {
        let code = "echo test";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0);
    }
    #[test]
    fn test_sc2251_contradiction_placeholder() {
        let code = r#"[ -n "$x" ] && [ -z "$x" ]"#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder - should detect contradiction
    }
    #[test]
    fn test_sc2251_always_true_placeholder() {
        let code = r#"if true; then"#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2251_always_false_placeholder() {
        let code = r#"if false; then"#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2251_numeric_placeholder() {
        let code = "[ 1 -eq 2 ]";
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
    #[test]
    fn test_sc2251_string_placeholder() {
        let code = r#"[ "a" = "b" ]"#;
        let result = check(code);
        assert_eq!(result.diagnostics.len(), 0); // Placeholder
    }
}
