fn test_cast_from_f64()

in arrow-cast/src/cast.rs [6066:6213]

• 138 lines of code
• 1 McCabe index (conditional complexity)

    fn test_cast_from_f64() {
        let f64_values: Vec<f64> = vec![
            i64::MIN as f64,
            i32::MIN as f64,
            i16::MIN as f64,
            i8::MIN as f64,
            0_f64,
            u8::MAX as f64,
            u16::MAX as f64,
            u32::MAX as f64,
            u64::MAX as f64,
        ];
        let f64_array: ArrayRef = Arc::new(Float64Array::from(f64_values));

        let f64_expected = vec![
            -9223372036854776000.0,
            -2147483648.0,
            -32768.0,
            -128.0,
            0.0,
            255.0,
            65535.0,
            4294967295.0,
            18446744073709552000.0,
        ];
        assert_eq!(
            f64_expected,
            get_cast_values::<Float64Type>(&f64_array, &DataType::Float64)
                .iter()
                .map(|i| i.parse::<f64>().unwrap())
                .collect::<Vec<f64>>()
        );

        let f32_expected = vec![
            -9223372000000000000.0,
            -2147483600.0,
            -32768.0,
            -128.0,
            0.0,
            255.0,
            65535.0,
            4294967300.0,
            18446744000000000000.0,
        ];
        assert_eq!(
            f32_expected,
            get_cast_values::<Float32Type>(&f64_array, &DataType::Float32)
                .iter()
                .map(|i| i.parse::<f32>().unwrap())
                .collect::<Vec<f32>>()
        );

        let i64_expected = vec![
            "-9223372036854775808",
            "-2147483648",
            "-32768",
            "-128",
            "0",
            "255",
            "65535",
            "4294967295",
            "null",
        ];
        assert_eq!(
            i64_expected,
            get_cast_values::<Int64Type>(&f64_array, &DataType::Int64)
        );

        let i32_expected = vec![
            "null",
            "-2147483648",
            "-32768",
            "-128",
            "0",
            "255",
            "65535",
            "null",
            "null",
        ];
        assert_eq!(
            i32_expected,
            get_cast_values::<Int32Type>(&f64_array, &DataType::Int32)
        );

        let i16_expected = vec![
            "null", "null", "-32768", "-128", "0", "255", "null", "null", "null",
        ];
        assert_eq!(
            i16_expected,
            get_cast_values::<Int16Type>(&f64_array, &DataType::Int16)
        );

        let i8_expected = vec![
            "null", "null", "null", "-128", "0", "null", "null", "null", "null",
        ];
        assert_eq!(
            i8_expected,
            get_cast_values::<Int8Type>(&f64_array, &DataType::Int8)
        );

        let u64_expected = vec![
            "null",
            "null",
            "null",
            "null",
            "0",
            "255",
            "65535",
            "4294967295",
            "null",
        ];
        assert_eq!(
            u64_expected,
            get_cast_values::<UInt64Type>(&f64_array, &DataType::UInt64)
        );

        let u32_expected = vec![
            "null",
            "null",
            "null",
            "null",
            "0",
            "255",
            "65535",
            "4294967295",
            "null",
        ];
        assert_eq!(
            u32_expected,
            get_cast_values::<UInt32Type>(&f64_array, &DataType::UInt32)
        );

        let u16_expected = vec![
            "null", "null", "null", "null", "0", "255", "65535", "null", "null",
        ];
        assert_eq!(
            u16_expected,
            get_cast_values::<UInt16Type>(&f64_array, &DataType::UInt16)
        );

        let u8_expected = vec![
            "null", "null", "null", "null", "0", "255", "null", "null", "null",
        ];
        assert_eq!(
            u8_expected,
            get_cast_values::<UInt8Type>(&f64_array, &DataType::UInt8)
        );
    }