vmcompare

package

v0.9.6 Latest Latest Go to latest Published: Apr 29, 2026 License: MIT Imports: 6 Imported by: 0

Details

Package vmcompare provides systematic VM opcode verification by comparing go-lua execution output against C Lua 5.5.1 reference output.

For each opcode, a minimal Lua snippet is run on both VMs and stdout is compared.

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func CompareVM(t *testing.T, tc vmTest) (bool, string, string)

CompareVM runs a test case on both VMs and compares normalized output. Returns (match bool, cOutput string, goOutput string).

func Normalize(s string) string

Normalize output for comparison: trim trailing whitespace per line, normalize NaN/inf representations, trim trailing newline.

func RunCLua(t *testing.T, code string) string

RunCLua executes Lua code with C Lua and returns stdout.

func RunGoLua(t *testing.T, code string) string

RunGoLua executes Lua code with go-lua and returns captured print output. Replaces the global print with a buffer-capturing version.

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