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dbx/apps/desktop/src/lib/__tests__/sql/executableStatementRangeCache.spec.ts
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TypeScript
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import { Text } from "@codemirror/state";
import { describe, expect, it, vi } from "vitest";
import { executableStatementRangeAtCursor, executableStatementRangeCacheForDoc, executableStatementRangeStartingAt, type ExecutableStatementRangeParser } from "@/lib/sql/executableStatementRangeCache";
describe("executableStatementRangeCacheForDoc", () => {
it("reuses parsed executable statement ranges for the same document and database type", () => {
const doc = Text.of(["SELECT 1;", "SELECT 2;"]);
const parse = vi.fn<ExecutableStatementRangeParser>(() => [
{ from: 0, to: 8, sql: "SELECT 1" },
{ from: 10, to: 18, sql: "SELECT 2" },
]);
const first = executableStatementRangeCacheForDoc(null, doc, "mysql", parse);
const second = executableStatementRangeCacheForDoc(first, doc, "mysql", parse);
expect(second).toBe(first);
expect(parse).toHaveBeenCalledTimes(1);
expect(executableStatementRangeStartingAt(second, 10)?.sql).toBe("SELECT 2");
});
it("resolves the exact multi-line statement for a gutter run button", () => {
const doc = Text.of(["SELECT *", "FROM apis AS ap", "LIMIT 100;", "", "SELECT *", "FROM menus AS mn", "LIMIT 100;"]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
const secondStatementLine = doc.line(5);
expect(executableStatementRangeStartingAt(cache, secondStatementLine.from)?.sql).toBe("SELECT *\nFROM menus AS mn\nLIMIT 100");
});
it("resolves statements with leading whitespace for gutter run buttons", () => {
const doc = Text.of([" SELECT 1;", " SELECT 2;", "\t SELECT 3;", "", " "]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
expect(executableStatementRangeStartingAt(cache, doc.line(1).from)?.sql).toBe("SELECT 1");
expect(executableStatementRangeStartingAt(cache, doc.line(2).from)?.sql).toBe("SELECT 2");
expect(executableStatementRangeStartingAt(cache, doc.line(3).from)?.sql).toBe("SELECT 3");
expect(executableStatementRangeStartingAt(cache, doc.line(4).from)).toBeNull();
expect(executableStatementRangeStartingAt(cache, doc.line(5).from)).toBeNull();
});
it("does not resolve gutter run buttons when non-whitespace precedes the statement on the same line", () => {
const doc = Text.of(["/* comment */ SELECT 1;"]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
expect(executableStatementRangeStartingAt(cache, doc.line(1).from)).toBeNull();
expect(executableStatementRangeStartingAt(cache, doc.toString().indexOf("SELECT"))?.sql).toBe("SELECT 1");
});
it("resolves the current statement from a cursor inside a continuation line", () => {
const doc = Text.of(["SELECT *", "FROM apis AS ap", "LIMIT 100;", "", "SELECT *", "FROM menus AS mn", "LIMIT 100;"]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
const cursor = doc.toString().indexOf("menus");
expect(executableStatementRangeAtCursor(cache, cursor)?.sql).toBe("SELECT *\nFROM menus AS mn\nLIMIT 100");
});
it("keeps indentation and same-line semicolon gaps attached to the current statement", () => {
const doc = Text.of(["SELECT 1;", " SELECT 2;"]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
const indentationCursor = doc.line(2).from + 2;
const semicolonGapCursor = doc.toString().indexOf(";") + 1;
expect(executableStatementRangeAtCursor(cache, indentationCursor)?.sql).toBe("SELECT 2");
expect(executableStatementRangeAtCursor(cache, semicolonGapCursor)?.sql).toBe("SELECT 1");
});
it("returns null for blank and pure comment cursor lines", () => {
const doc = Text.of(["SELECT 1;", "-- comment", "/* block comment */", "", "SELECT 2;"]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
expect(executableStatementRangeAtCursor(cache, doc.line(2).from + 3)).toBeNull();
expect(executableStatementRangeAtCursor(cache, doc.line(3).from + 3)).toBeNull();
expect(executableStatementRangeAtCursor(cache, doc.line(4).from)).toBeNull();
});
it("resolves SQL after a leading block comment on the same line", () => {
const doc = Text.of(["/* comment */ SELECT 1;"]);
const cache = executableStatementRangeCacheForDoc(null, doc, "mysql");
expect(executableStatementRangeAtCursor(cache, doc.toString().indexOf("SELECT"))?.sql).toBe("SELECT 1");
expect(executableStatementRangeAtCursor(cache, doc.toString().indexOf("comment"))).toBeNull();
});
it("rebuilds the cache when the document instance changes", () => {
const firstDoc = Text.of(["SELECT 1;"]);
const secondDoc = Text.of(["SELECT 1;"]);
const parse = vi.fn<ExecutableStatementRangeParser>(() => [{ from: 0, to: 8, sql: "SELECT 1" }]);
const first = executableStatementRangeCacheForDoc(null, firstDoc, "mysql", parse);
const second = executableStatementRangeCacheForDoc(first, secondDoc, "mysql", parse);
expect(second).not.toBe(first);
expect(parse).toHaveBeenCalledTimes(2);
});
it("rebuilds the cache when the database type changes", () => {
const doc = Text.of(["SELECT 1;"]);
const parse = vi.fn<ExecutableStatementRangeParser>(() => [{ from: 0, to: 8, sql: "SELECT 1" }]);
const mysql = executableStatementRangeCacheForDoc(null, doc, "mysql", parse);
const postgres = executableStatementRangeCacheForDoc(mysql, doc, "postgres", parse);
expect(postgres).not.toBe(mysql);
expect(parse).toHaveBeenCalledTimes(2);
});
});