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fix: improve error messages in check_quantamental_dataframe function
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@ -17,14 +17,15 @@ use std::error::Error;
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pub fn check_quantamental_dataframe(df: &DataFrame) -> Result<(), Box<dyn Error>> {
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let expected_cols = ["real_date", "cid", "xcat"];
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let expected_dtype = [DataType::Date, DataType::String, DataType::String];
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let err = "Quantamental DataFrame must have at least 4 columns: 'real_date', 'cid', 'xcat' and one or more metrics.";
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for (col, dtype) in expected_cols.iter().zip(expected_dtype.iter()) {
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let col = df.column(col);
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if col.is_err() {
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return Err(format!("Column {:?} not found", col).into());
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return Err(format!("{} Column {:?} not found", err, col).into());
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}
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let col = col?;
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if col.dtype() != dtype {
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return Err(format!("Column {:?} has wrong dtype", col).into());
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return Err(format!("{} Column {:?} has wrong dtype", err, col).into());
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}
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}
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Ok(())
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