Function introspectPgToFile

drizzle-kit/tests/schemaDiffer.ts:2303–2403

(
	client: PGlite,
	initSchema: PostgresSchema,
	testName: string,
	schemas: string[] = ['public'],
	entities?: Entities,
	casing?: CasingType | undefined,
)

// --- Introspect to file helpers ---

export const introspectPgToFile = async (
	client: PGlite,
	initSchema: PostgresSchema,
	testName: string,
	schemas: string[] = ['public'],
	entities?: Entities,
	casing?: CasingType | undefined,
) => {
	// put in db
	const { sqlStatements } = await applyPgDiffs(initSchema, casing);
	for (const st of sqlStatements) {
		await client.query(st);
	}

	// introspect to schema
	const introspectedSchema = await fromDatabase(
		{
			query: async (query: string, values?: any[] | undefined) => {
				const res = await client.query(query, values);
				return res.rows as any[];
			},
		},
		undefined,
		schemas,
		entities,
	);

	const { version: initV, dialect: initD, ...initRest } = introspectedSchema;

	const initSch = {
		version: '7',
		dialect: 'postgresql',
		id: '0',
		prevId: '0',
		...initRest,
	} as const;

	const initSn = squashPgScheme(initSch);
	const validatedCur = pgSchema.parse(initSch);

	// write to ts file
	const file = schemaToTypeScript(introspectedSchema, 'camel');

	fs.writeFileSync(`tests/introspect/postgres/${testName}.ts`, file.file);

	// generate snapshot from ts file
	const response = await prepareFromPgImports([
		`tests/introspect/postgres/${testName}.ts`,
	]);

	const afterFileImports = generatePgSnapshot(
		response.tables,
		response.enums,
		response.schemas,
		response.sequences,
		response.roles,
		response.policies,
		response.views,