Testing for the Muddy River restoration project that produced loud, gunshot-like bangs audible throughout parts of Boston and Brookline on Wednesday will continue today — and run through next week. From 1 p.m. to 3 p.m. today the US Army Corps of Engineers will conduct strength tests on components of a new flood-prevention system being installed on a stretch of the river near the Landmark Center, the US Army Corps of Engineers said.