rustyroad 1.8.0

Rusty Road is a framework written in Rust that is based on Ruby on Rails. It is designed to provide the familiar conventions and ease of use of Ruby on Rails, while also taking advantage of the performance and efficiency of Rust.
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//! Which tables a plan schedules for backfill.

use super::plan_test::rename_migration;
use crate::database::versions::ops::model::Migration;
use crate::database::versions::ops::plan;

#[test]
fn rename_schedules_a_backfill() {
    let plan = plan(&rename_migration(), "public_02_rename");

    // Rows never written would otherwise keep an empty shadow column.
    assert_eq!(plan.backfill_tables, vec!["platform_trash_zone_mappings"]);
}

#[test]
fn drop_column_keeps_it_readable_until_completion() {
    let migration: Migration = serde_json::from_str(
        r#"{"operations":[{"drop_column":{"table":"users","column":"legacy",
            "down":"'unknown'"}}]}"#,
    )
    .expect("should parse");

    let plan = plan(&migration, "public_v");
    let start = plan.statements.join("\n");

    // Start installs a trigger keeping the column populated for old readers.
    assert!(start.contains("CREATE OR REPLACE FUNCTION"));
    assert!(!start.contains("DROP COLUMN"));
    // The drop itself waits for completion.
    assert!(plan
        .completion_statements()
        .join("\n")
        .contains(r#"DROP COLUMN IF EXISTS "legacy""#));
}