Build in /tmp and immediately discard

internal/pipeline/pipeline_test.go

@@ -3,6 +3,7 @@ package pipeline
 import (
 	"bytes"
 	"encoding/json"
+	"errors"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -935,7 +936,6 @@ func TestBuildSplitsMultipleHAKGroupsDeterministically(t *testing.T) {
     }
   ]
 }
-
 `)
 	mustWriteFile(t, filepath.Join(root, "src", "module", "module.ifo.json"), `{
   "file_type": "IFO ",
@@ -1039,6 +1039,87 @@ func TestBuildSplitsMultipleHAKGroupsDeterministically(t *testing.T) {
 	}
 }
 
+func TestBuildHAKsWithOptionsBuildsSingleArchiveByName(t *testing.T) {
+	root := t.TempDir()
+	mustMkdir(t, filepath.Join(root, "src"))
+	mustMkdir(t, filepath.Join(root, "src", "module"))
+	mustMkdir(t, filepath.Join(root, "assets", "core"))
+	mustMkdir(t, filepath.Join(root, "build"))
+
+	mustWriteFile(t, filepath.Join(root, "nwn-tool.json"), `{
+  "module": {
+    "name": "Test Module",
+    "resref": "testmod"
+  },
+  "paths": {
+    "source": "src",
+    "assets": "assets",
+    "build": "build"
+  },
+  "haks": [
+    {
+      "name": "core",
+      "priority": 1,
+      "max_bytes": 310,
+      "split": true,
+      "include": ["core/**"]
+    }
+  ]
+}
+`)
+	mustWriteFile(t, filepath.Join(root, "src", "module", "module.ifo.json"), `{
+  "file_type": "IFO ",
+  "file_version": "V3.2",
+  "root": {
+    "struct_type": 0,
+    "fields": [
+      {
+        "label": "Mod_Name",
+        "type": "CExoString",
+        "value": "Test Module"
+      },
+      {
+        "label": "Mod_HakList",
+        "type": "List",
+        "value": []
+      }
+    ]
+  }
+}
+`)
+	mustWriteFile(t, filepath.Join(root, "assets", "core", "a.tga"), strings.Repeat("a", 80))
+	mustWriteFile(t, filepath.Join(root, "assets", "core", "b.tga"), strings.Repeat("b", 80))
+	mustWriteFile(t, filepath.Join(root, "assets", "core", "c.tga"), strings.Repeat("c", 80))
+
+	p, err := project.Load(root)
+	if err != nil {
+		t.Fatalf("load project: %v", err)
+	}
+	if err := p.ValidateLayout(); err != nil {
+		t.Fatalf("validate layout: %v", err)
+	}
+	if err := p.Scan(); err != nil {
+		t.Fatalf("scan: %v", err)
+	}
+
+	result, err := BuildHAKsWithOptions(p, BuildHAKOptions{ArchiveNames: []string{"core_02"}})
+	if err != nil {
+		t.Fatalf("build filtered haks: %v", err)
+	}
+	if len(result.HAKPaths) != 1 {
+		t.Fatalf("expected 1 hak output, got %d", len(result.HAKPaths))
+	}
+	if got := filepath.Base(result.HAKPaths[0]); got != "core_02.hak" {
+		t.Fatalf("unexpected hak output %q", got)
+	}
+	if _, err := os.Stat(filepath.Join(root, "build", "core_01.hak")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("expected core_01.hak to be absent, got err=%v", err)
+	}
+	if _, err := os.Stat(filepath.Join(root, "build", "core.hak")); !errors.Is(err, os.ErrNotExist) {
+		t.Fatalf("expected unsplit core.hak to be absent, got err=%v", err)
+	}
+}
+
 func TestBuildExcludesOptionalHAKsFromModuleOrder(t *testing.T) {
 	root := t.TempDir()
 	mustMkdir(t, filepath.Join(root, "src"))