add content-addressed hak source mode (#7)

Reviewed-on: #7
Co-authored-by: vickydotbat <vickydotbat@tutamail.com>
Co-committed-by: vickydotbat <vickydotbat@tutamail.com>

internal/pipeline/pipeline_test.go

@@ -17,6 +17,35 @@ import (
 	"git.westgate.pw/ShadowsOverWestgate/sow-tools/internal/project"
 )
 
+func TestBuildHAKsCleansFailedTemporaryArchive(t *testing.T) {
+	root := t.TempDir()
+	p := loadDirectProject(t, root)
+
+	blobs := filepath.Join(root, "blobs")
+	sha := strings.Repeat("a", 64)
+	writeBlobAt(t, blobs, sha, "wxyz")
+	manifestPath := writeDirectManifest(t, root,
+		map[string]SourceAsset{"core/a.tga": {SHA256: sha, SizeBytes: 4}},
+		[]string{"core/a.tga"})
+
+	tmpPath := filepath.Join(root, "build", "core_01.hak.tmp")
+	mustWriteFile(t, tmpPath, "stale partial archive")
+
+	_, err := BuildHAKsWithOptions(p, BuildHAKOptions{
+		SourceManifestPath:   manifestPath,
+		ContentAddressedRoot: blobs,
+	})
+	if err == nil {
+		t.Fatal("expected corrupt input to fail")
+	}
+	if _, err := os.Stat(filepath.Join(root, "build", "core_01.hak")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatal("corrupt input must not leave a completed hak")
+	}
+	if _, err := os.Stat(tmpPath); !errors.Is(err, os.ErrNotExist) {
+		t.Fatal("failed build must clean temporary hak")
+	}
+}
+
 func TestBuildThenExtract(t *testing.T) {
 	root := t.TempDir()
 	mustMkdir(t, filepath.Join(root, "src"))