icydb-core 0.145.7

IcyDB — A schema-first typed query engine and persistence runtime for Internet Computer canisters
Documentation 
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use crate::db::sql_shared::{Keyword, TokenKind, tokenize_sql};

#[test]
fn tokenize_sql_classifies_mixed_case_keywords_without_normalization_changes() {
    let tokens = tokenize_sql("SeLeCt id FrOm Customer OrDeR By id aSc LiMiT 1")
        .expect("mixed-case keyword SQL should tokenize");

    let kinds = tokens
        .into_iter()
        .map(|token| token.kind)
        .collect::<Vec<_>>();

    assert!(matches!(
        kinds.first(),
        Some(TokenKind::Keyword(Keyword::Select))
    ));
    assert!(matches!(
        kinds.get(2),
        Some(TokenKind::Keyword(Keyword::From))
    ));
    assert!(matches!(
        kinds.get(4),
        Some(TokenKind::Keyword(Keyword::Order))
    ));
    assert!(matches!(
        kinds.get(5),
        Some(TokenKind::Keyword(Keyword::By))
    ));
    assert!(matches!(
        kinds.get(7),
        Some(TokenKind::Keyword(Keyword::Asc))
    ));
    assert!(matches!(
        kinds.get(8),
        Some(TokenKind::Keyword(Keyword::Limit))
    ));
}

#[test]
fn tokenize_sql_preserves_non_keyword_identifiers() {
    let tokens = tokenize_sql("selectivity customer_order order_total")
        .expect("identifiers should tokenize");

    let kinds = tokens
        .into_iter()
        .map(|token| token.kind)
        .collect::<Vec<_>>();

    assert!(matches!(
        kinds.first(),
        Some(TokenKind::Identifier(value)) if value == "selectivity"
    ));
    assert!(matches!(
        kinds.get(1),
        Some(TokenKind::Identifier(value)) if value == "customer_order"
    ));
    assert!(matches!(
        kinds.get(2),
        Some(TokenKind::Identifier(value)) if value == "order_total"
    ));
}

#[test]
fn tokenize_sql_preserves_qualified_identifier_segments() {
    let tokens = tokenize_sql("public.Customer").expect("qualified identifier should tokenize");

    let kinds = tokens
        .into_iter()
        .map(|token| token.kind)
        .collect::<Vec<_>>();

    assert!(matches!(
        kinds.first(),
        Some(TokenKind::Identifier(value)) if value == "public"
    ));
    assert!(matches!(kinds.get(1), Some(TokenKind::Dot)));
    assert!(matches!(
        kinds.get(2),
        Some(TokenKind::Identifier(value)) if value == "Customer"
    ));
}

#[test]
fn tokenize_sql_decodes_hex_blob_literals() {
    let tokens = tokenize_sql("X'0A0b' x'FF'").expect("blob literals should tokenize");

    let kinds = tokens
        .into_iter()
        .map(|token| token.kind)
        .collect::<Vec<_>>();

    assert!(matches!(
        kinds.first(),
        Some(TokenKind::BlobLiteral(value)) if value == &[0x0A, 0x0B]
    ));
    assert!(matches!(
        kinds.get(1),
        Some(TokenKind::BlobLiteral(value)) if value == &[0xFF]
    ));
}

#[test]
fn tokenize_sql_rejects_malformed_hex_blob_literals() {
    let err = tokenize_sql("X'ABC'").expect_err("odd-length blob literal should fail");

    assert_eq!(
        err,
        crate::db::sql_shared::SqlParseError::InvalidSyntax {
            message: "blob literal must contain an even number of hex digits".to_string()
        }
    );

    let err = tokenize_sql("X'ABCG'").expect_err("non-hex blob literal should fail");

    assert_eq!(
        err,
        crate::db::sql_shared::SqlParseError::InvalidSyntax {
            message: "blob literal must contain only hexadecimal digits".to_string()
        }
    );
}

#[test]
fn tokenize_sql_rejects_oversized_hex_blob_literals() {
    let oversized_hex = "00".repeat(1_048_577);
    let sql = format!("X'{oversized_hex}'");

    let err = tokenize_sql(sql.as_str()).expect_err("oversized blob literal should fail");

    assert_eq!(
        err,
        crate::db::sql_shared::SqlParseError::InvalidSyntax {
            message: "blob literal exceeds maximum decoded byte length of 1048576".to_string()
        }
    );
}