created test files

src/test_textnode.py

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+import unittest
+
+from textnode import (
+    TextNode,
+    text_type_text,
+    text_type_bold,
+    text_type_italic,
+    text_type_code,
+    text_type_image,
+    text_type_link,
+)
+
+class TestTextNode(unittest.TestCase):
+    def test_eq(self):
+        node = TextNode("This is a text node", "bold")
+        node2 = TextNode("This is a text node", "bold")
+        self.assertEqual(node, node2)
+
+    def test_eq_false(self):
+        node = TextNode("This is a text node", text_type_text)
+        node2 = TextNode("This is a text node", text_type_bold)
+        self.assertNotEqual(node, node2)
+
+    def test_eq_false2(self):
+        node = TextNode("This is a text node", text_type_text)
+        node2 = TextNode("This is a text node2", text_type_text)
+        self.assertNotEqual(node, node2)
+
+    def test_eq_url(self):
+        node = TextNode("This is a text node", text_type_italic, "https://www.boot.dev")
+        node2 = TextNode(
+            "This is a text node", text_type_italic, "https://www.boot.dev"
+        )
+        self.assertEqual(node, node2)
+
+    def test_repr(self):
+        node = TextNode("This is a text node", text_type_text, "https://www.boot.dev")
+        self.assertEqual(
+            "TextNode(This is a text node, text, https://www.boot.dev)", repr(node)
+        )
+
+if __name__ == "__main__":
+    unittest.main()