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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| use stdext::function_name; | ||
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| use arrow2::array::{Array, BinaryArray, BooleanArray, Int32Array, Utf8Array}; | ||
| use arrow2::chunk::Chunk; | ||
| use arrow2::datatypes::Field; | ||
| use arrow2::error::Result; | ||
| use arrow2::io::odbc::api::{Connection, Cursor}; | ||
| use arrow2::io::odbc::{buffer_from_metadata, deserialize, infer_schema}; | ||
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| use super::{setup_empty_table, ENV, MSSQL}; | ||
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| #[test] | ||
| fn int() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = vec![Chunk::new(vec![Box::new(Int32Array::from_slice([1])) as _])]; | ||
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| test(expected, "INT", "(1)", table_name) | ||
| } | ||
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| #[test] | ||
| fn int_nullable() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = vec![Chunk::new(vec![ | ||
| Box::new(Int32Array::from([Some(1), None])) as _, | ||
| ])]; | ||
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| test(expected, "INT", "(1),(NULL)", table_name) | ||
| } | ||
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| #[test] | ||
| fn bool() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = vec![Chunk::new(vec![ | ||
| Box::new(BooleanArray::from_slice([true])) as _ | ||
| ])]; | ||
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| test(expected, "BIT", "(1)", table_name) | ||
| } | ||
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| #[test] | ||
| fn bool_nullable() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = vec![Chunk::new(vec![ | ||
| Box::new(BooleanArray::from([Some(true), None])) as _, | ||
| ])]; | ||
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| test(expected, "BIT", "(1),(NULL)", table_name) | ||
| } | ||
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| #[test] | ||
| fn binary() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = vec![Chunk::new(vec![ | ||
| Box::new(BinaryArray::<i32>::from([Some(b"ab")])) as _, | ||
| ])]; | ||
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| test( | ||
| expected, | ||
| "VARBINARY(2)", | ||
| "(CAST('ab' AS VARBINARY(2)))", | ||
| table_name, | ||
| ) | ||
| } | ||
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| #[test] | ||
| fn binary_nullable() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = | ||
| vec![Chunk::new(vec![ | ||
| Box::new(BinaryArray::<i32>::from([Some(b"ab"), None, Some(b"ac")])) as _, | ||
| ])]; | ||
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| test( | ||
| expected, | ||
| "VARBINARY(2)", | ||
| "(CAST('ab' AS VARBINARY(2))),(NULL),(CAST('ac' AS VARBINARY(2)))", | ||
| table_name, | ||
| ) | ||
| } | ||
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| #[test] | ||
| fn utf8_nullable() -> Result<()> { | ||
| let table_name = function_name!().rsplit_once(':').unwrap().1; | ||
| let expected = | ||
| vec![Chunk::new(vec![ | ||
| Box::new(Utf8Array::<i32>::from([Some("ab"), None, Some("ac")])) as _, | ||
| ])]; | ||
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| test(expected, "VARCHAR(2)", "('ab'),(NULL),('ac')", table_name) | ||
| } | ||
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| fn test( | ||
| expected: Vec<Chunk<Box<dyn Array>>>, | ||
| type_: &str, | ||
| insert: &str, | ||
| table_name: &str, | ||
| ) -> Result<()> { | ||
| let connection = ENV.connect_with_connection_string(MSSQL).unwrap(); | ||
| setup_empty_table(&connection, table_name, &[type_]).unwrap(); | ||
| connection | ||
| .execute(&format!("INSERT INTO {table_name} (a) VALUES {insert}"), ()) | ||
| .unwrap(); | ||
|
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| // When | ||
| let query = format!("SELECT a FROM {table_name} ORDER BY id"); | ||
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| let chunks = read(&connection, &query)?.1; | ||
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| assert_eq!(chunks, expected); | ||
| Ok(()) | ||
| } | ||
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| fn read( | ||
| connection: &Connection<'_>, | ||
| query: &str, | ||
| ) -> Result<(Vec<Field>, Vec<Chunk<Box<dyn Array>>>)> { | ||
| let mut a = connection.prepare(query).unwrap(); | ||
| let fields = infer_schema(&a)?; | ||
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| let max_batch_size = 100; | ||
| let buffer = buffer_from_metadata(&a, max_batch_size).unwrap(); | ||
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| let cursor = a.execute(()).unwrap().unwrap(); | ||
| let mut cursor = cursor.bind_buffer(buffer).unwrap(); | ||
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| let mut chunks = vec![]; | ||
| while let Some(batch) = cursor.fetch().unwrap() { | ||
| let arrays = (0..batch.num_cols()) | ||
| .zip(fields.iter()) | ||
| .map(|(index, field)| { | ||
| let column_view = batch.column(index); | ||
| deserialize(column_view, field.data_type.clone()) | ||
| }) | ||
| .collect::<Vec<_>>(); | ||
| chunks.push(Chunk::new(arrays)); | ||
| } | ||
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| Ok((fields, chunks)) | ||
| } |