syntax_data: {"ast_node_type":"other","tokens":[{"end":40,"kind":"keyword","start":0,"text":"assert_eq!(srcfbp2.pos,"}]}
source_snippet:     assert_eq!(srcfbp2.pos, BytePos(0));
context_before:     assert_eq!(srcfbp2.sf.name, PathBuf::from("blork2.rs").into());
context_after: }