What is the test for determining whether a debtor has been declared bankrupt by the bankruptcy court?

We are required to consider the presence or absence of subject matter jurisdiction sua sponte. Cannon v. Haw. Corp. (In re Haw. Corp.), 796 F.2d 1139, 1141 (9th Cir. 1986). The bankruptcy court's jurisdiction is grounded in, and limited by, statute. Kirton v. Valley Health Sys. (In re Valley Health Sys.), 471 B.R. 555, 563 (9th Cir. BAP 2012). Under 28 U.S.C. 1334(e)(1), the bankruptcy court has exclusive jurisdiction "of all the property, wherever located, of the debtor as of the commencement of such case, and of property of the estate."