graphlite 0.0.1

GraphLite - A lightweight ISO GQL Graph Database
Documentation 
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//! Test to verify SET transactional behavior - all properties or rollback

#[path = "testutils/mod.rs"]
mod testutils;

use graphlite::Value;
use testutils::test_fixture::TestFixture;

#[test]
fn test_set_transactional_all_or_nothing() {
    let fixture = TestFixture::new().expect("Failed to create fixture");

    fixture
        .setup_graph("transactional_set_test")
        .expect("Failed to setup graph");

    // Create a person
    fixture
        .query("INSERT (:Person {name: 'Alice', age: 30, city: 'NYC'})")
        .expect("Failed to create person");

    // Try to SET multiple properties where one will fail
    // datetime('1992-05-15') will fail because it needs time component
    let result = fixture.query(
        "MATCH (p:Person {name: 'Alice'}) SET p.age = 31, p.birthday = datetime('1992-05-15')",
    );

    // This should fail with an error (not a warning!)
    assert!(
        result.is_err(),
        "SET should fail when one property evaluation fails"
    );

    let err_msg = format!("{:?}", result.unwrap_err());
    assert!(
        err_msg.contains("Failed to evaluate") || err_msg.contains("datetime"),
        "Error should mention datetime parsing failure: {}",
        err_msg
    );

    // Verify that NO properties were changed (transactional guarantee)
    let query_result = fixture
        .query("MATCH (p:Person {name: 'Alice'}) RETURN p.age as age")
        .expect("Query should succeed");

    assert_eq!(query_result.rows.len(), 1, "Should return 1 node");

    let age_value = &query_result.rows[0].values["age"];
    assert_eq!(
        age_value,
        &Value::Number(30.0),
        "Age should still be 30 (not changed to 31)"
    );
}

#[test]
fn test_set_transactional_success_all_valid() {
    let fixture = TestFixture::new().expect("Failed to create fixture");

    fixture
        .setup_graph("transactional_set_success_test")
        .expect("Failed to setup graph");

    // Create a person
    fixture
        .query("INSERT (:Person {name: 'Bob', age: 25})")
        .expect("Failed to create person");

    // SET multiple properties - all valid (with correct datetime format)
    let result = fixture.query(
        "MATCH (p:Person {name: 'Bob'}) SET p.age = 26, p.city = upper('seattle'), p.birthday = datetime('1992-05-15T00:00:00Z')"
    );

    assert!(
        result.is_ok(),
        "SET should succeed when all properties are valid"
    );

    // Verify ALL properties were changed
    let query_result = fixture.query(
        "MATCH (p:Person {name: 'Bob'}) RETURN p.age as age, p.city as city, p.birthday as birthday"
    ).expect("Query should succeed");

    assert_eq!(query_result.rows.len(), 1, "Should return 1 node");

    let row = &query_result.rows[0].values;
    assert_eq!(
        row.get("age"),
        Some(&Value::Number(26.0)),
        "Age should be updated to 26"
    );
    assert_eq!(
        row.get("city"),
        Some(&Value::String("SEATTLE".to_string())),
        "City should be SEATTLE"
    );
    assert!(
        row.get("birthday") != Some(&Value::Null),
        "Birthday should be set"
    );
}