diff --git a/tools/tlc/tests/conftest.py b/tools/tlc/tests/conftest.py
index 6b28e43..b8f88b5 100644
--- a/tools/tlc/tests/conftest.py
+++ b/tools/tlc/tests/conftest.py
@@ -10,6 +10,7 @@
 """ Common configurations and fixtures for test environment."""
 
 import pytest
+import yaml
 from click.testing import CliRunner
 
 from tlc.cli import cli
@@ -21,12 +22,43 @@
 
 
 @pytest.fixture
+def tmpyamlconfig(tmpdir):
+    return tmpdir.join("config.yaml").strpath
+
+
+@pytest.fixture
 def tmpfdt(tmpdir):
     fdt = tmpdir.join("fdt.dtb")
     fdt.write_binary(b"\x00" * 100)
     return fdt
 
 
+@pytest.fixture(params=[1, 2, 3, 4, 5, 0x100, 0x101, 0x102, 0x104])
+def non_empty_tag_id(request):
+    return request.param
+
+
+@pytest.fixture
+def tmpyamlconfig_blob_file(tmpdir, tmpfdt, non_empty_tag_id):
+    config_path = tmpdir.join("config.yaml")
+
+    config = {
+        "has_checksum": True,
+        "max_size": 0x1000,
+        "entries": [
+            {
+                "tag_id": non_empty_tag_id,
+                "blob_file_path": tmpfdt.strpath,
+            },
+        ],
+    }
+
+    with open(config_path, "w") as f:
+        yaml.safe_dump(config, f)
+
+    return config_path
+
+
 @pytest.fixture
 def tlcrunner(tmptlstr):
     runner = CliRunner()