First Commit. Duplicate bunext-sqlite preset

2026-10-18 16:47:11 +01:00
commit 81e4a8aecc
718 changed files with 41695 additions and 0 deletions
@@ -0,0 +1,102 @@
+import { Database } from "bun:sqlite";
+import { beforeEach, describe, expect, test } from "bun:test";
+import grabNextDocumentSequence, {
+    type DocumentNumberSqlRunner,
+} from "./grab-next-document-sequence";
+
+let db: Database;
+let run_sql: DocumentNumberSqlRunner;
+
+beforeEach(() => {
+    db = new Database(":memory:");
+    db.run("CREATE TABLE invoices (invoice_number TEXT UNIQUE)");
+
+    run_sql = async ({ sql, values }) => {
+        const row = db.query(sql).get(...values) as
+            | { max_seq: number | null }
+            | null;
+
+        return { singleRes: row };
+    };
+});
+
+function insertNumbers(numbers: string[]) {
+    const insert = db.prepare("INSERT INTO invoices (invoice_number) VALUES (?)");
+
+    for (const number of numbers) {
+        insert.run(number);
+    }
+}
+
+describe("grabNextDocumentSequence", () => {
+    test("starts at 1 for an empty table", async () => {
+        const next = await grabNextDocumentSequence({
+            table: "invoices",
+            column: "invoice_number",
+            prefix: "BSQLITE-202610",
+            run_sql,
+        });
+
+        expect(next).toBe(1);
+    });
+
+    test("returns max + 1 for existing numbers", async () => {
+        insertNumbers([
+            "BSQLITE-202610-001",
+            "BSQLITE-202610-002",
+            "BSQLITE-202610-003",
+        ]);
+
+        const next = await grabNextDocumentSequence({
+            table: "invoices",
+            column: "invoice_number",
+            prefix: "BSQLITE-202610",
+            run_sql,
+        });
+
+        expect(next).toBe(4);
+    });
+
+    test("does not reuse a number after a deletion", async () => {
+        insertNumbers(["BSQLITE-202610-001", "BSQLITE-202610-003"]);
+
+        const next = await grabNextDocumentSequence({
+            table: "invoices",
+            column: "invoice_number",
+            prefix: "BSQLITE-202610",
+            run_sql,
+        });
+
+        expect(next).toBe(4);
+    });
+
+    test("ignores numbers from other prefixes", async () => {
+        insertNumbers([
+            "BSQLITE-202609-099",
+            "BSQLITEQ-202610-050",
+            "BSQLITE-202610-002",
+        ]);
+
+        const next = await grabNextDocumentSequence({
+            table: "invoices",
+            column: "invoice_number",
+            prefix: "BSQLITE-202610",
+            run_sql,
+        });
+
+        expect(next).toBe(3);
+    });
+
+    test("handles sequences beyond three digits", async () => {
+        insertNumbers(["BSQLITE-202610-009", "BSQLITE-202610-010"]);
+
+        const next = await grabNextDocumentSequence({
+            table: "invoices",
+            column: "invoice_number",
+            prefix: "BSQLITE-202610",
+            run_sql,
+        });
+
+        expect(next).toBe(11);
+    });
+});