test for readme example added

tests/test_readme_example.py

@@ -0,0 +1,31 @@
+import pyladoc
+import pandas as pd
+
+def test_readme_example():
+    doc = pyladoc.DocumentWriter()
+
+    doc.add_markdown("""
+        # Example
+        This is inline LaTeX: $$\\lambda$$
+
+        This is a LaTeX block with a number:
+        $$
+        \\label{eq:test1}
+        \\lambda_{\text{mix}} = \\sum_{i=1}^{n} \\frac{x_i \\lambda_i}{\\sum_{j=1}^{n} x_j \\Phi_{ij}}
+        $$
+
+        This is an example table. The table @table:pandas_example shows some random data.
+        """)
+
+    some_data = {
+        'Row1': ["Line1", "Line2", "Line3"],
+        'Row2': [120, 100, 110],
+        'Row3': ['12 g/km', '> 150 g/km', '110 g/km']
+    }
+    df = pd.DataFrame(some_data)
+    doc.add_table(df, 'This is a pandas example table', 'pandas_example')
+
+    html_code = doc.to_html()
+    print(html_code)
+
+    assert '<table' in html_code