Add files via upload

internal/vision/path_test.go

@@ -0,0 +1,52 @@
+package vision
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func TestResolveImagePath_underCWD(t *testing.T) {
+	dir := t.TempDir()
+	img := filepath.Join(dir, "shot.png")
+	if err := os.WriteFile(img, []byte{0x89, 0x50, 0x4e, 0x47}, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	got, err := ResolveImagePath(img, dir)
+	if err != nil {
+		t.Fatal(err)
+	}
+	want := normalizeAbsPath(img)
+	if got != want {
+		t.Fatalf("got %q want %q", got, want)
+	}
+}
+
+func TestResolveImagePath_absoluteOutsideCWD(t *testing.T) {
+	dir := t.TempDir()
+	cwd := t.TempDir()
+	img := filepath.Join(dir, "remote.png")
+	if err := os.WriteFile(img, []byte{0x89, 0x50, 0x4e, 0x47}, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	got, err := ResolveImagePath(img, cwd)
+	if err != nil {
+		t.Fatalf("expected absolute path outside cwd to be allowed: %v", err)
+	}
+	want := normalizeAbsPath(img)
+	if got != want {
+		t.Fatalf("got %q want %q", got, want)
+	}
+}
+
+func TestResolveImagePath_rejectsNonImageExt(t *testing.T) {
+	dir := t.TempDir()
+	f := filepath.Join(dir, "notes.txt")
+	if err := os.WriteFile(f, []byte("x"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	_, err := ResolveImagePath(f, dir)
+	if err == nil {
+		t.Fatal("expected error for non-image extension")
+	}
+}