Add tests for patch extension and update configuration for extra lines handling

- Added unit tests in `test_extend_patch.py` and `test_pr_generate_extended_diff.py` to verify patch extension functionality with extra lines.
- Updated `pr_processing.py` to include `patch_extra_lines_before` and `patch_extra_lines_after` settings.
- Modified `configuration.toml` to adjust `patch_extra_lines_before` to 4 and `max_context_tokens` to 16000.
- Enabled extra lines in `pr_code_suggestions.py`.
- Added new model `claude-3-5-sonnet` to `__init__.py`.

pr_agent/algo/__init__.py

@@ -46,6 +46,7 @@ MAX_TOKENS = {
     'bedrock/anthropic.claude-3-sonnet-20240229-v1:0': 100000,
     'bedrock/anthropic.claude-3-haiku-20240307-v1:0': 100000,
     'bedrock/anthropic.claude-3-5-sonnet-20240620-v1:0': 100000,
+    'claude-3-5-sonnet': 100000,
     'groq/llama3-8b-8192': 8192,
     'groq/llama3-70b-8192': 8192,
     'groq/mixtral-8x7b-32768': 32768,

pr_agent/algo/pr_processing.py

@@ -400,10 +400,13 @@ def get_pr_multi_diffs(git_provider: GitProvider,
     for lang in pr_languages:
         sorted_files.extend(sorted(lang['files'], key=lambda x: x.tokens, reverse=True))
 
-
     # try first a single run with standard diff string, with patch extension, and no deletions
     patches_extended, total_tokens, patches_extended_tokens = pr_generate_extended_diff(
-        pr_languages, token_handler, add_line_numbers_to_hunks=True)
+        pr_languages, token_handler, add_line_numbers_to_hunks=True,
+        patch_extra_lines_before=get_settings().config.patch_extra_lines_before,
+        patch_extra_lines_after=get_settings().config.patch_extra_lines_after)
+
+    # if we are under the limit, return the full diff
     if total_tokens + OUTPUT_BUFFER_TOKENS_SOFT_THRESHOLD < get_max_tokens(model):
         return ["\n".join(patches_extended)] if patches_extended else []
 

pr_agent/settings/configuration.toml

@@ -20,7 +20,7 @@ max_commits_tokens = 500
 max_model_tokens = 32000 # Limits the maximum number of tokens that can be used by any model, regardless of the model's default capabilities.
 custom_model_max_tokens=-1 # for models not in the default list
 #
-patch_extra_lines_before = 6
+patch_extra_lines_before = 4
 patch_extra_lines_after = 2
 secret_provider=""
 cli_mode=false
@@ -97,7 +97,7 @@ enable_help_text=false
 
 
 [pr_code_suggestions] # /improve #
-max_context_tokens=10000
+max_context_tokens=16000
 num_code_suggestions=4
 commitable_code_suggestions = false
 extra_instructions = ""

pr_agent/tools/pr_code_suggestions.py

@@ -286,7 +286,7 @@ class PRCodeSuggestions:
                                         self.token_handler,
                                         model,
                                         add_line_numbers_to_hunks=True,
-                                        disable_extra_lines=True)
+                                        disable_extra_lines=False)
 
         if self.patches_diff:
             get_logger().debug(f"PR diff", artifact=self.patches_diff)

tests/unittest/test_extend_patch.py

@@ -1,44 +1,6 @@
-
-# Generated by CodiumAI
-
-
+import pytest
 from pr_agent.algo.git_patch_processing import extend_patch
-
-"""
-Code Analysis
-
-Objective:
-The objective of the 'extend_patch' function is to extend a given patch to include a specified number of surrounding 
-lines. This function takes in an original file string, a patch string, and the number of lines to extend the patch by, 
-and returns the extended patch string.
-
-Inputs:
-- original_file_str: a string representing the original file
-- patch_str: a string representing the patch to be extended
-- num_lines: an integer representing the number of lines to extend the patch by
-
-Flow:
-1. Split the original file string and patch string into separate lines
-2. Initialize variables to keep track of the current hunk's start and size for both the original file and the patch
-3. Iterate through each line in the patch string
-4. If the line starts with '@@', extract the start and size values for both the original file and the patch, and 
-calculate the extended start and size values
-5. Append the extended hunk header to the extended patch lines list
-6. Append the specified number of lines before the hunk to the extended patch lines list
-7. Append the current line to the extended patch lines list
-8. If the line is not a hunk header, append it to the extended patch lines list
-9. Return the extended patch string
-
-Outputs:
-- extended_patch_str: a string representing the extended patch
-
-Additional aspects:
-- The function uses regular expressions to extract the start and size values from the hunk header
-- The function handles cases where the start value of a hunk is less than the number of lines to extend by by setting 
-the extended start value to 1
-- The function handles cases where the hunk extends beyond the end of the original file by only including lines up to 
-the end of the original file in the extended patch
-"""
+from pr_agent.algo.token_handler import TokenHandler
 
 
 class TestExtendPatch:
@@ -48,7 +10,8 @@ class TestExtendPatch:
         patch_str = '@@ -2,2 +2,2 @@ init()\n-line2\n+new_line2\nline3'
         num_lines = 1
         expected_output = '@@ -1,4 +1,4 @@ init()\nline1\n-line2\n+new_line2\nline3\nline4'
-        actual_output = extend_patch(original_file_str, patch_str, num_lines)
+        actual_output = extend_patch(original_file_str, patch_str,
+                                     patch_extra_lines_before=num_lines, patch_extra_lines_after=num_lines)
         assert actual_output == expected_output
 
     # Tests that the function returns an empty string when patch_str is empty
@@ -57,14 +20,16 @@ class TestExtendPatch:
         patch_str = ''
         num_lines = 1
         expected_output = ''
-        assert extend_patch(original_file_str, patch_str, num_lines) == expected_output
+        assert extend_patch(original_file_str, patch_str,
+                            patch_extra_lines_before=num_lines, patch_extra_lines_after=num_lines) == expected_output
 
     # Tests that the function returns the original patch when num_lines is 0
     def test_zero_num_lines(self):
         original_file_str = 'line1\nline2\nline3\nline4\nline5'
         patch_str = '@@ -2,2 +2,2 @@ init()\n-line2\n+new_line2\nline3'
         num_lines = 0
-        assert extend_patch(original_file_str, patch_str, num_lines) == patch_str
+        assert extend_patch(original_file_str, patch_str,
+                            patch_extra_lines_before=num_lines, patch_extra_lines_after=num_lines) == patch_str
 
     # Tests that the function returns the original patch when patch_str contains no hunks
     def test_no_hunks(self):
@@ -80,7 +45,8 @@ class TestExtendPatch:
         patch_str = '@@ -2,3 +2,3 @@ init()\n-line2\n+new_line2\nline3\nline4'
         num_lines = 1
         expected_output = '@@ -1,5 +1,5 @@ init()\nline1\n-line2\n+new_line2\nline3\nline4\nline5'
-        actual_output = extend_patch(original_file_str, patch_str, num_lines)
+        actual_output = extend_patch(original_file_str, patch_str,
+                                     patch_extra_lines_before=num_lines, patch_extra_lines_after=num_lines)
         assert actual_output == expected_output
 
     # Tests the functionality of extending a patch with multiple hunks.
@@ -89,5 +55,59 @@ class TestExtendPatch:
         patch_str = '@@ -2,3 +2,3 @@ init()\n-line2\n+new_line2\nline3\nline4\n@@ -4,1 +4,1 @@ init2()\n-line4\n+new_line4'  # noqa: E501
         num_lines = 1
         expected_output = '@@ -1,5 +1,5 @@ init()\nline1\n-line2\n+new_line2\nline3\nline4\nline5\n@@ -3,3 +3,3 @@ init2()\nline3\n-line4\n+new_line4\nline5'  # noqa: E501
-        actual_output = extend_patch(original_file_str, patch_str, num_lines)
+        actual_output = extend_patch(original_file_str, patch_str,
+                                     patch_extra_lines_before=num_lines, patch_extra_lines_after=num_lines)
         assert actual_output == expected_output
+
+
+class PRProcessingTest:
+    class File:
+        def __init__(self, base_file, patch, filename):
+            self.base_file = base_file
+            self.patch = patch
+            self.filename = filename
+
+    @pytest.fixture
+    def token_handler(self):
+        # Create a TokenHandler instance with dummy data
+        th = TokenHandler(system="System prompt", user="User prompt")
+        th.prompt_tokens = 100
+        return th
+
+    @pytest.fixture
+    def pr_languages(self):
+        # Create a list of languages with files containing base_file and patch data
+        return [
+            {
+                'files': [
+                    self.File(base_file="line000\nline00\nline0\nline1\noriginal content\nline2\nline3\nline4\nline5\nline6\nline7\nline8\nline9\nline10",
+                              patch="@@ -5,5 +5,5 @@\n-original content\n+modified content\nline2\nline3\nline4\nline5",
+                              filename="file1"),
+                    self.File(base_file="original content\nline2\nline3\nline4\nline5\nline6\nline7\nline8\nline9\nline10",
+                              patch="@@ -6,5 +6,5 @@\nline6\nline7\nline8\n-line9\n+modified line9\nline10",
+                              filename="file2")
+                ]
+            }
+        ]
+
+    def test_extend_patches_with_extra_lines(self, token_handler, pr_languages):
+        patches_extended_no_extra_lines, total_tokens, patches_extended_tokens = pr_generate_extended_diff(
+            pr_languages, token_handler, add_line_numbers_to_hunks=False,
+            patch_extra_lines_before=0,
+            patch_extra_lines_after=0
+        )
+
+        # Check that with no extra lines, the patches are the same as the original patches
+        p0 = patches_extended_no_extra_lines[0].strip()
+        p1 = patches_extended_no_extra_lines[1].strip()
+        assert p0 == '## file1\n\n' + pr_languages[0]['files'][0].patch.strip()
+        assert p1 == '## file2\n\n' + pr_languages[0]['files'][1].patch.strip()
+
+        patches_extended_with_extra_lines, total_tokens, patches_extended_tokens = pr_generate_extended_diff(
+            pr_languages, token_handler, add_line_numbers_to_hunks=False,
+            patch_extra_lines_before=2,
+            patch_extra_lines_after=1
+        )
+
+        p0_extended = patches_extended_with_extra_lines[0].strip()
+        assert p0_extended == '## file1\n\n@@ -3,8 +3,8 @@ \nline0\nline1\n-original content\n+modified content\nline2\nline3\nline4\nline5\nline6'