Function nullif_string

datafusion/functions/src/core/nullif.rs:243–261

()

    #[test]
    fn nullif_string() -> Result<()> {
        let a = StringArray::from(vec![Some("foo"), Some("bar"), None, Some("baz")]);
        let a = ColumnarValue::Array(Arc::new(a));

        let lit_array = ColumnarValue::Scalar(ScalarValue::from("bar"));

        let result = nullif_func(&[a, lit_array])?;
        let result = result.into_array(0).expect("Failed to convert to array");

        let expected = Arc::new(StringArray::from(vec![
            Some("foo"),
            None,
            None,
            Some("baz"),
        ])) as ArrayRef;

        assert_eq!(expected.as_ref(), result.as_ref());
        Ok(())
    }

    #[test]
    fn nullif_struct() -> Result<()> {