78 lines
1.9 KiB
Go
78 lines
1.9 KiB
Go
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// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
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// SPDX-License-Identifier: BSD-3-Clause
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package verify
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import (
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"testing"
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)
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func TestGroundTruthBasic(t *testing.T) {
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// Use the simple test kernel — it assembles with go tool asm.
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gt, err := GroundTruth("../testdata/verify/basic_amd64.s")
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if err != nil {
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t.Fatalf("GroundTruth: %v", err)
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}
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if len(gt) == 0 {
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t.Fatal("no functions extracted from ground truth")
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}
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// The "add" function should be present and non-empty.
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code, ok := gt["add"]
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if !ok {
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t.Fatalf("function 'add' not found in ground truth; got: %v", keys(gt))
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}
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if len(code) == 0 {
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t.Fatal("add: zero-length code")
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}
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t.Logf("ground truth functions: %v", keys(gt))
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}
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func TestGroundTruthComparison(t *testing.T) {
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// Assemble with gasm and compare against go tool asm.
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k, err := Load("../testdata/verify/basic_amd64.s")
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if err != nil {
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t.Fatalf("Load: %v", err)
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}
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defer k.Close()
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gt, err := GroundTruth("../testdata/verify/basic_amd64.s")
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if err != nil {
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t.Fatalf("GroundTruth: %v", err)
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}
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for _, name := range k.FuncNames() {
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fl, _ := k.Func(name)
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gasmCode := k.Image().Code[fl.Offset : fl.Offset+fl.Size]
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goCode, ok := gt[name]
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if !ok {
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t.Errorf("%s: not in ground truth", name)
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continue
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}
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if len(gasmCode) != len(goCode) {
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t.Errorf("%s: size mismatch: gasm=%d go=%d", name, len(gasmCode), len(goCode))
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continue
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}
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for i := range gasmCode {
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if gasmCode[i] != goCode[i] {
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t.Errorf("%s: byte %d differs: gasm=%02x go=%02x", name, i, gasmCode[i], goCode[i])
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break
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}
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}
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}
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}
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func TestGroundTruthBadFile(t *testing.T) {
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_, err := GroundTruth("/nonexistent/file_amd64.s")
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if err == nil {
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t.Fatal("expected error for nonexistent file")
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}
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}
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func keys(m map[string][]byte) []string {
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out := make([]string, 0, len(m))
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for k := range m {
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out = append(out, k)
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}
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return out
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}
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