Implementing Fallback Mechanisms for YAML Parsing

pr_agent/algo/utils.py

@@ -297,6 +297,21 @@ def load_yaml(review_text: str) -> dict:
 
 def try_fix_yaml(review_text: str) -> dict:
     review_text_lines = review_text.split('\n')
+
+    # first fallback - try to convert 'relevant line: ...' to relevant line: |-\n        ...'
+    review_text_lines_copy = review_text_lines.copy()
+    for i in range(0, len(review_text_lines_copy)):
+        if 'relevant line:' in review_text_lines_copy[i] and not '|-' in review_text_lines_copy[i]:
+            review_text_lines_copy[i] = review_text_lines_copy[i].replace('relevant line: ',
+                                                    'relevant line: |-\n        ')
+    try:
+        data = yaml.load('\n'.join(review_text_lines_copy), Loader=yaml.SafeLoader)
+        get_logger().info(f"Successfully parsed AI prediction after adding |-\n        to relevant line")
+        return data
+    except:
+        get_logger().debug(f"Failed to parse AI prediction after adding |-\n        to relevant line")
+
+    # second fallback - try to remove last lines
     data = {}
     for i in range(1, len(review_text_lines)):
         review_text_lines_tmp = '\n'.join(review_text_lines[:-i])

tests/unittest/try_fix_yaml.py

@@ -0,0 +1,31 @@
+
+# Generated by CodiumAI
+from pr_agent.algo.utils import try_fix_yaml
+
+
+import pytest
+
+class TestTryFixYaml:
+
+    # The function successfully parses a valid YAML string.
+    def test_valid_yaml(self):
+        review_text = "key: value\n"
+        expected_output = {"key": "value"}
+        assert try_fix_yaml(review_text) == expected_output
+
+    # The function adds '|-' to 'relevant line:' if it is not already present and successfully parses the YAML string.
+    def test_add_relevant_line(self):
+        review_text = "relevant line: value: 3\n"
+        expected_output = {"relevant line": "value: 3"}
+        assert try_fix_yaml(review_text) == expected_output
+
+    # The function removes the last line(s) of the YAML string and successfully parses the YAML string.
+    def test_remove_last_line(self):
+        review_text = "key: value\nextra invalid line\n"
+        expected_output = {"key": "value"}
+        assert try_fix_yaml(review_text) == expected_output
+
+    # The YAML string is empty.
+    def test_empty_yaml_fixed(self):
+        review_text = ""
+        assert try_fix_yaml(review_text) is None