Add asserts. Edit readme
diff --git a/README.md b/README.md
index 48921b2..24af867 100644
--- a/README.md
+++ b/README.md
@@ -53,14 +53,19 @@
 import tomli
 
 toml_str = """
-           gretzky = 99
+[[players]]
+name = "Lehtinen"
+number = 26
 
-           [kurri]
-           jari = 17
-           """
+[[players]]
+name = "Numminen"
+number = 27
+"""
 
 toml_dict = tomli.loads(toml_str)
-assert toml_dict == {"gretzky": 99, "kurri": {"jari": 17}}
+assert toml_dict == {
+    "players": [{"name": "Lehtinen", "number": 26}, {"name": "Numminen", "number": 27}]
+}
 ```
 
 ### Parse a TOML file<a name="parse-a-toml-file"></a>
@@ -97,6 +102,7 @@
 import tomli
 
 toml_dict = tomli.loads("precision-matters = 0.982492", parse_float=Decimal)
+assert isinstance(toml_dict["precision-matters"], Decimal)
 assert toml_dict["precision-matters"] == Decimal("0.982492")
 ```
 
diff --git a/tests/test_data.py b/tests/test_data.py
index eb0952f..1454ebd 100644
--- a/tests/test_data.py
+++ b/tests/test_data.py
@@ -17,6 +17,7 @@
 DATA_DIR = Path(__file__).parent / "data"
 
 VALID_FILES = tuple((DATA_DIR / "valid").glob("**/*.toml"))
+assert VALID_FILES, "Valid TOML test files not found"
 
 _expected_files = []
 for p in VALID_FILES:
@@ -29,6 +30,7 @@
 VALID_FILES_EXPECTED = tuple(_expected_files)
 
 INVALID_FILES = tuple((DATA_DIR / "invalid").glob("**/*.toml"))
+assert INVALID_FILES, "Invalid TOML test files not found"
 
 
 class TestData(unittest.TestCase):