minor: add failing test case for profiler when system.profile doesn't exist

also test that dropping system.profile works, but only when profiling is off

jstests/profile1.js

@@ -0,0 +1,39 @@
+
+/* With pre-created system.profile (capped) */
+db.runCommand({profile: 0});
+db.getCollection("system.profile").drop();
+assert(!db.getLastError(), "Z");
+assert.eq(0, db.runCommand({profile: -1}).was, "A");
+
+db.createCollection("system.profile", {capped: true, size: 1000});
+db.runCommand({profile: 2});
+assert.eq(2, db.runCommand({profile: -1}).was, "B");
+assert.eq(1, db.system.profile.stats().capped, "C");
+var capped_size = db.system.profile.storageSize();
+assert.gt(capped_size, 999, "D");
+assert.lt(capped_size, 2000, "E");
+
+/* Make sure we can't drop if profiling is still on */
+db.getCollection("system.profile").drop();
+assert(db.getLastError(), "Y");
+
+/* With pre-created system.profile (un-capped) */
+db.runCommand({profile: 0});
+db.getCollection("system.profile").drop();
+assert.eq(0, db.runCommand({profile: -1}).was, "F");
+
+db.createCollection("system.profile");
+db.runCommand({profile: 2});
+assert.eq(2, db.runCommand({profile: -1}).was, "G");
+assert.eq(null, db.system.profile.stats().capped, "G1");
+
+/* With no system.profile collection */
+db.runCommand({profile: 0});
+db.getCollection("system.profile").drop();
+assert.eq(0, db.runCommand({profile: -1}).was, "H");
+
+db.runCommand({profile: 2});
+assert.eq(2, db.runCommand({profile: -1}).was, "I");
+assert.eq(1, db.system.profile.stats().capped, "J");
+var auto_size = db.system.profile.storageSize();
+assert.gt(auto_size, capped_size, "K");