diff --git a/tests/test_parsers.py b/tests/test_parsers.py
new file mode 100644
index 0000000..7042443
--- /dev/null
+++ b/tests/test_parsers.py
@@ -0,0 +1,134 @@
+import pytest
+from confdoc.parsers.json_parser import JsonParser
+from confdoc.parsers.yaml_parser import YamlParser
+from confdoc.parsers.toml_parser import TomlParser
+from confdoc.parsers.factory import ConfigParserFactory
+
+
+class TestJsonParser:
+    def test_parse_valid_json(self):
+        parser = JsonParser()
+        content = '{"name": "test", "value": 123}'
+        result = parser.parse(content)
+        assert result == {"name": "test", "value": 123}
+    
+    def test_parse_nested_json(self):
+        parser = JsonParser()
+        content = '{"app": {"name": "test", "version": "1.0"}}'
+        result = parser.parse(content)
+        assert result == {"app": {"name": "test", "version": "1.0"}}
+    
+    def test_parse_array_json(self):
+        parser = JsonParser()
+        content = '[1, 2, 3, "test"]'
+        result = parser.parse(content)
+        assert result == [1, 2, 3, "test"]
+    
+    def test_dump_json(self):
+        parser = JsonParser()
+        data = {"name": "test", "value": 123}
+        result = parser.dump(data)
+        assert '"name": "test"' in result
+        assert '"value": 123' in result
+    
+    def test_get_format(self):
+        parser = JsonParser()
+        assert parser.get_format() == "json"
+
+
+class TestYamlParser:
+    def test_parse_valid_yaml(self):
+        parser = YamlParser()
+        content = "name: test\nvalue: 123"
+        result = parser.parse(content)
+        assert result == {"name": "test", "value": 123}
+    
+    def test_parse_nested_yaml(self):
+        parser = YamlParser()
+        content = "app:\n  name: test\n  version: '1.0'"
+        result = parser.parse(content)
+        assert result == {"app": {"name": "test", "version": "1.0"}}
+    
+    def test_parse_list_yaml(self):
+        parser = YamlParser()
+        content = "items:\n  - item1\n  - item2"
+        result = parser.parse(content)
+        assert result == {"items": ["item1", "item2"]}
+    
+    def test_get_format(self):
+        parser = YamlParser()
+        assert parser.get_format() == "yaml"
+
+
+class TestTomlParser:
+    def test_parse_valid_toml(self):
+        parser = TomlParser()
+        content = 'name = "test"\nvalue = 123'
+        result = parser.parse(content)
+        assert result["name"] == "test"
+        assert result["value"] == 123
+    
+    def test_parse_table_toml(self):
+        parser = TomlParser()
+        content = '[app]\nname = "test"\nversion = "1.0"'
+        result = parser.parse(content)
+        assert result["app"]["name"] == "test"
+        assert result["app"]["version"] == "1.0"
+    
+    def test_get_format(self):
+        parser = TomlParser()
+        assert parser.get_format() == "toml"
+
+
+class TestConfigParserFactory:
+    def test_get_json_parser(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser("json")
+        assert isinstance(parser, JsonParser)
+    
+    def test_get_yaml_parser(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser("yaml")
+        assert isinstance(parser, YamlParser)
+    
+    def test_get_toml_parser(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser("toml")
+        assert isinstance(parser, TomlParser)
+    
+    def test_get_parser_for_json_file(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser_for_file("config.json")
+        assert isinstance(parser, JsonParser)
+    
+    def test_get_parser_for_yaml_file(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser_for_file("config.yaml")
+        assert isinstance(parser, YamlParser)
+    
+    def test_get_parser_for_yml_file(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser_for_file("config.yml")
+        assert isinstance(parser, YamlParser)
+    
+    def test_get_parser_for_toml_file(self):
+        factory = ConfigParserFactory()
+        parser = factory.get_parser_for_file("config.toml")
+        assert isinstance(parser, TomlParser)
+    
+    def test_invalid_format_raises_error(self):
+        factory = ConfigParserFactory()
+        with pytest.raises(ValueError):
+            factory.get_parser("invalid")
+    
+    def test_detect_json_format(self):
+        factory = ConfigParserFactory()
+        assert factory.detect_format('{"key": "value"}') == "json"
+    
+    def test_detect_yaml_format(self):
+        factory = ConfigParserFactory()
+        assert factory.detect_format("key: value") == "yaml"
+    
+    def test_detect_toml_format(self):
+        factory = ConfigParserFactory()
+        assert factory.detect_format('key = "value"') == "toml"