[UNIT] Add test case code for posix module coverage improve: from 23% to 50%#4623

pugong2019 wants to merge 1 commit intobytecodealliance:dev/ai_generated_casesbytecodealliance/wasm-micro-runtime:dev/ai_generated_casesfrom

pugong2019:AI_WAMR_2.4.1_Coveragepugong2019/wasm-micro-runtime:AI_WAMR_2.4.1_CoverageCopy head branch name to clipboard