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@Konboi Konboi commented Nov 15, 2024

To support flutter. Example project is cloudbees-oss/smart-tests-integration-examples#84

Please see usage https://github.com/launchableinc/examples/pull/84/files?short_path=316b034#diff-316b034d126691f8d97422721b134f6bfb0106f18b95eced6b2220cde52a0d6a


Summary by CodeRabbit

  • New Features
    • Enhanced functionality for parsing and managing Flutter test results.
    • Introduced structured JSON reports that detail test suite and individual test results.
    • Added classes for TestCase, TestSuite, and ReportParser to improve organization and processing of test data.
    • Implemented a command-line interface for recording test results.
    • Added a new JSON file to represent structured test results, facilitating easier analysis and debugging.

These updates provide improved insights and management capabilities for Flutter testing outcomes.

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coderabbitai bot commented Nov 15, 2024

Walkthrough

The changes enhance the file launchable/test_runners/flutter.py, introducing functionality for parsing and managing Flutter test results. It includes three new classes: TestCase, which represents individual tests; TestSuite, which manages collections of TestCase instances; and ReportParser, responsible for reading and processing NDJSON formatted test reports. Additionally, a command-line interface function, record_tests, is added to facilitate the parsing of report files. Two new JSON files, record_test_result.json and report.json, provide structured data for test results and execution reports.

Changes

File Path Change Summary
launchable/test_runners/flutter.py Added TestCase, TestSuite, and ReportParser classes; added record_tests function for CLI.
tests/data/flutter/record_test_result.json New file added containing structured data for test case results.
tests/data/flutter/report.json New file added providing a structured report of Flutter test executions.

Sequence Diagram(s)

sequenceDiagram
    participant Client
    participant ReportParser
    participant TestSuite
    participant TestCase

    Client->>ReportParser: record_tests(reports)
    ReportParser->>ReportParser: _parse_json(report)
    ReportParser->>TestSuite: create suite
    ReportParser->>TestCase: create test case
    ReportParser->>TestSuite: add test case
    ReportParser->>Client: return results
Loading

Poem

🐰 In a world of tests, so bright and new,
A parser hops in, with a job to do.
With cases and suites, it gathers the score,
Flutter's results, now easy to explore!
So let’s celebrate, with a joyful cheer,
For every test passed, we hold dear! 🌟

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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (4)
launchable/test_runners/flutter.py (4)

3-3: Remove unused import Path from pathlib.

The import from pathlib import Path is unused in the code and can be safely removed to clean up the imports.

Apply this diff to remove the unused import:

- from pathlib import Path
🧰 Tools
🪛 Ruff

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)


85-87: Avoid accessing private methods of another class.

The method _get_test_case is intended to be private (indicated by the leading underscore) but is accessed from the ReportParser class. It's generally discouraged to access another class's private methods. Consider making _get_test_case a public method or accessing the _test_cases attribute directly if appropriate.

Apply this diff to rename the method and update its usage:

In TestSuite:

-    def _get_test_case(self, id: int) -> Optional[TestCase]:
+    def get_test_case(self, id: int) -> Optional[TestCase]:

In ReportParser:

-        c = s._get_test_case(test_id)
+        c = s.get_test_case(test_id)

135-219: Refactor _parse_json method for better maintainability.

The _parse_json method handles multiple data_type cases within a single method, making it lengthy and harder to maintain. Consider refactoring each data_type case into separate handler methods to enhance readability and adhere to the Single Responsibility Principle.

Refactor the _parse_json method:

 def _parse_json(self, data: Dict):
     if not isinstance(data, Dict):
         # Note: array sometimes comes in but won't use it
         return

     data_type = data.get("type")
     if data_type is None:
         return
-    elif data_type == "suite":
-        # Handle suite data
-        ...
-    elif data_type == "testStart":
-        # Handle testStart data
-        ...
-    elif data_type == "testDone":
-        # Handle testDone data
-        ...
-    elif data_type == "error":
-        # Handle error data
-        ...
-    elif data_type == "print":
-        # Handle print data
-        ...
-    else:
-        return
+    handler = getattr(self, f"_handle_{data_type}", None)
+    if callable(handler):
+        handler(data)
+    else:
+        return

+def _handle_suite(self, data: Dict):
+    # Existing code for handling 'suite' data_type
+    ...

+def _handle_testStart(self, data: Dict):
+    # Existing code for handling 'testStart' data_type
+    ...

+def _handle_testDone(self, data: Dict):
+    # Existing code for handling 'testDone' data_type
+    ...

+def _handle_error(self, data: Dict):
+    # Existing code for handling 'error' data_type
+    ...

+def _handle_print(self, data: Dict):
+    # Existing code for handling 'print' data_type
+    ...

125-126: Add exception handling when opening report files.

The open function may raise an exception if the file does not exist or is unreadable. Consider adding exception handling to provide a clear error message and prevent the program from crashing.

Modify the parse_func method to handle exceptions:

     def parse_func(self, report_file: str) -> Generator[CaseEvent, None, None]:
-        with open(report_file, "r") as ndjson:
+        try:
+            with open(report_file, "r") as ndjson:
                 for j in ndjson:
                     if not j.strip():
                         continue
                     data = json.loads(j)
                     self._parse_json(data)
+        except FileNotFoundError:
+            click.echo(click.style(
+                f"Error: Report file '{report_file}' not found.", fg='red'), err=True)
+        except IOError as e:
+            click.echo(click.style(
+                f"Error: Unable to read report file '{report_file}': {e}", fg='red'), err=True)
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launchable/test_runners/flutter.py

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)

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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (4)
launchable/test_runners/flutter.py (4)

3-3: Remove unused import

The pathlib.Path import is redundant since pathlib is already imported.

-from pathlib import Path
🧰 Tools
🪛 Ruff

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)


207-209: Document retry behavior implications

The comment about retry handling should be expanded to explain the potential impact on test results and any planned future improvements.

-    # It's difficult to identify the "Retry" case because Flutter reports it with the same test ID
-    # So we won't handle it at the moment.
+    # TODO: Retry handling is currently not supported because Flutter reports retried tests
+    # with the same test ID. This means that for retried tests:
+    # - Only the last attempt's results are recorded
+    # - The total duration might be incorrect
+    # - Previous attempt outputs might be lost
+    # Future improvement: Consider aggregating results from all attempts

169-172: Refactor warning message handling

Multiple similar warning messages about missing tests/suites should be consolidated into a helper method for consistency and maintainability.

+    def _warn_missing_entity(self, entity_type: str, entity_id: int, context: str = None) -> None:
+        message = f"Warning: Cannot find a {entity_type} (id: {entity_id})"
+        if context:
+            message += f". {context}"
+        click.echo(click.style(message, fg='yellow'), err=True)
+
 # Replace existing warning messages with calls to _warn_missing_entity:
-click.echo(click.style(
-    "Warning: Cannot find a parent test suite (id: {}). So won't send test result of {}".format(
-        suite_id, test_data.get("name")), fg='yellow'), err=True)
+self._warn_missing_entity("test suite", suite_id, 
+    f"So won't send test result of {test_data.get('name')}")

Also applies to: 200-203, 212-215


223-230: Add validation for report file extensions

The record_tests function should validate that the provided report files have the correct extension for Flutter test reports.

+def is_flutter_report(path: str) -> bool:
+    return path.endswith('.jsonl') or path.endswith('.json')
+
 @click.argument('reports', required=True, nargs=-1)
 @launchable.record.tests
 def record_tests(client, reports):
+    invalid_reports = [r for r in reports if not is_flutter_report(r)]
+    if invalid_reports:
+        click.echo(click.style(
+            f"Warning: Skipping files with invalid extensions: {invalid_reports}. "
+            "Flutter test reports should end with .jsonl or .json",
+            fg='yellow'), err=True)
+        reports = [r for r in reports if is_flutter_report(r)]
+
     file_path_normalizer = FilePathNormalizer(base_path=client.base_path, no_base_path_inference=client.no_base_path_inference)
     client.parse_func = ReportParser(file_path_normalizer).parse_func
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launchable/test_runners/flutter.py

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)

🔇 Additional comments (1)
launchable/test_runners/flutter.py (1)

46-47: Verify the default test status behavior

The safe fallback to TEST_PASSED for unknown status values could mask potential issues. Consider if failing by default would be safer, or at least logging a warning when an unknown status is encountered.

We don't support retry test and the case that doesn't execute `flutter pub get` before running tests, for now
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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (6)
tests/data/flutter/record_test_result.json (3)

15-16: Document status code meanings

The status codes (0, 1, 2) are used across test cases but their meanings aren't documented. Consider adding documentation or using named constants:

  • 0: Failed
  • 1: Passed
  • 2: Skipped

Consider adding a comment block at the top of the file or in the README documenting these status codes.

Also applies to: 33-34, 51-52


1-61: LGTM! Well-structured test result format

The JSON structure effectively captures Flutter test results with appropriate detail:

  • Comprehensive test case information including paths and durations
  • Detailed error reporting with both stdout and stderr
  • Good metadata with testRunner, group, and build settings

Consider documenting the schema structure in a separate schema.json file to help maintain compatibility and enable validation. This would be particularly helpful for:

  • Validating test result outputs
  • Maintaining backward compatibility
  • Helping other developers integrate with the format

34-36: Consider standardizing error output format

The error output in stdout contains Unicode box-drawing characters which might cause display issues in some environments. Consider standardizing the error output format to use plain ASCII or storing the formatted output separately.

launchable/test_runners/flutter.py (3)

3-3: Remove unused import

The Path import from pathlib is unused as pathlib.Path is used directly.

-from pathlib import Path
🧰 Tools
🪛 Ruff

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)


38-47: Consider using constants for status codes

The status property uses magic numbers for status codes. Consider defining constants for these status codes to improve maintainability and readability.

+# At the top of the file with other constants
+TEST_STATUS_SKIPPED = 3  # CaseEvent.TEST_SKIPPED
+TEST_STATUS_PASSED = 1   # CaseEvent.TEST_PASSED
+TEST_STATUS_FAILED = 2   # CaseEvent.TEST_FAILED

 @property
 def status(self) -> int:  # status code see: case_event.py
     if self._is_skipped:
-        return CaseEvent.TEST_SKIPPED
+        return TEST_STATUS_SKIPPED
     elif self._status == FLUTTER_TEST_RESULT_SUCCESS:
-        return CaseEvent.TEST_PASSED
+        return TEST_STATUS_PASSED
     elif self._status == FLUTTER_TEST_RESULT_FAILURE:
-        return CaseEvent.TEST_FAILED
+        return TEST_STATUS_FAILED

     # safe fallback
-    return CaseEvent.TEST_PASSED
+    return TEST_STATUS_PASSED

125-126: Document the pub get information format

The TODO comment mentions supporting cases with pub get information but doesn't specify the expected format. Consider documenting the format or creating a GitHub issue to track this enhancement.

Would you like me to create a GitHub issue to track this enhancement with more details about the pub get information format?

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📒 Files selected for processing (3)
  • launchable/test_runners/flutter.py (1 hunks)
  • tests/data/flutter/record_test_result.json (1 hunks)
  • tests/data/flutter/report.json (1 hunks)
🧰 Additional context used
🪛 Ruff
launchable/test_runners/flutter.py

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)

🪛 Biome
tests/data/flutter/report.json

[error] 1-2: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 2-3: End of file expected

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(parse)


[error] 3-4: End of file expected

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[error] 4-5: End of file expected

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[error] 5-6: End of file expected

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[error] 6-7: End of file expected

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[error] 7-8: End of file expected

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(parse)


[error] 9-10: End of file expected

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(parse)


[error] 11-12: End of file expected

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[error] 13-14: End of file expected

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(parse)


[error] 14-15: End of file expected

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(parse)


[error] 15-16: End of file expected

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(parse)


[error] 16-17: End of file expected

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(parse)


[error] 17-18: End of file expected

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(parse)


[error] 18-19: End of file expected

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(parse)


[error] 19-20: End of file expected

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(parse)


[error] 20-21: End of file expected

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(parse)


[error] 21-22: End of file expected

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(parse)


[error] 22-23: End of file expected

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(parse)


[error] 23-24: End of file expected

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(parse)


[error] 24-25: End of file expected

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(parse)


[error] 25-29: End of file expected

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(parse)

🔇 Additional comments (6)
tests/data/flutter/report.json (4)

1-8: LGTM: Well-structured test metadata.

The header section properly includes protocol version, runner version, and test suite initialization events.

🧰 Tools
🪛 Biome

[error] 1-2: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 2-3: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 3-4: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 4-5: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 5-6: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 6-7: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 7-8: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


15-28: LGTM: Comprehensive test execution coverage.

The test data effectively covers all major test scenarios:

  • Successful test execution
  • Failed test with detailed error messages and stack traces
  • Skipped test case

The error reporting for the failed test is particularly well-structured, including:

  • Clear error message
  • Stack trace
  • Test file location
  • Test description
🧰 Tools
🪛 Biome

[error] 15-16: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 16-17: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 17-18: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 18-19: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 19-20: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 20-21: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 21-22: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 22-23: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 23-24: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 24-25: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


29-29: LGTM: Accurate completion status.

The overall test run is correctly marked as failed, which is consistent with the failed test case in the execution.

🧰 Tools
🪛 Biome

[error] 25-29: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 29-30: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


10-14: Verify if null observatory URIs are intentional.

All three test processes show null values for vmServiceUri and observatoryUri. This might limit debugging capabilities if these were intended to be configured.

🧰 Tools
🪛 Biome

[error] 11-12: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)


[error] 13-14: End of file expected

Use an array for a sequence of values: [1, 2]

(parse)

launchable/test_runners/flutter.py (2)

78-87: LGTM!

The TestSuite class implementation is clean and efficient, using a dictionary for O(1) test case lookups.


225-235: LGTM!

The CLI implementation is clean and follows click patterns correctly. The initialization of the parser with file path normalization is properly handled.

@sonarqubecloud
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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (3)
launchable/test_runners/flutter.py (3)

1-4: Remove unused import

The Path import from pathlib is redundant since we're already importing the entire pathlib module.

 import json
 import pathlib
-from pathlib import Path
 from typing import Dict, Generator, List, Optional
🧰 Tools
🪛 Ruff

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)


78-87: Consider adding helper methods for common operations

The TestSuite class could benefit from additional helper methods for common operations:

  • Adding test cases
  • Getting test case count
  • Checking if a test case exists
 class TestSuite:
     def __init__(self, id: int, platform: str, path: str):
         self._id = id
         self._platform = platform
         self._path = path
         self._test_cases: Dict[int, TestCase] = {}

     def _get_test_case(self, id: int) -> Optional[TestCase]:
         return self._test_cases.get(id)
+
+    def add_test_case(self, test_case: TestCase) -> None:
+        self._test_cases[test_case.id] = test_case
+
+    def has_test_case(self, id: int) -> bool:
+        return id in self._test_cases
+
+    @property
+    def test_count(self) -> int:
+        return len(self._test_cases)

125-126: Address TODO comment about Flutter pub get support

The TODO indicates missing support for cases that include flutter pub get information. This could affect test result reporting accuracy.

Would you like me to help implement support for these cases? I can analyze the example run mentioned in the comment (https://github.com/launchableinc/examples/actions/runs/11884312142/job/33112309450) and propose a solution.

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launchable/test_runners/flutter.py

3-3: pathlib.Path imported but unused

Remove unused import: pathlib.Path

(F401)

🔇 Additional comments (4)
launchable/test_runners/flutter.py (4)

97-107: Previous optimization suggestion still applies


239-246: Implementation looks good!

The record_tests function follows good practices:

  • Uses dependency injection for FilePathNormalizer
  • Properly integrates with the CLI framework
  • Maintains separation of concerns

248-249: Implementation looks good!

The subset implementations properly utilize the common implementations and correctly specify the file pattern for Dart test files.


46-47: Review the default test status behavior

The safe fallback to TEST_PASSED might mask potential issues. Consider if failing by default would be safer, or if logging a warning when hitting this fallback would be helpful for debugging.

✅ Verification successful

Safe fallback to TEST_PASSED is appropriate in this context

After examining the Flutter test reports and implementation, the current fallback behavior is correct and safe because:

  1. The code explicitly handles all known Flutter test states:

    • Skipped tests via is_skipped flag → TEST_SKIPPED
    • Success result → TEST_PASSED
    • Error result → TEST_FAILED
  2. The test report shows Flutter only emits standard test states ("success", "error") and skipped flag, with no other result values observed.

  3. The fallback only triggers if Flutter somehow reports an unknown state, which based on the protocol and test data doesn't occur in practice.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check if there are any Flutter test reports where tests have undefined status
# This helps assess the impact of the fallback behavior

rg -l '"type":\s*"testDone".*"result":\s*(?!"success"|"error")' $(fd -e json)

Length of output: 2874


Script:

#!/bin/bash
# Let's try a different approach to check Flutter test reports for non-standard test statuses
# First, let's examine the test report structure in the test data

# Check the content of Flutter test reports
cat tests/data/flutter/record_test_result.json tests/data/flutter/report.json

# Also check the Flutter test runner implementation to understand status mapping
cat launchable/test_runners/flutter.py

Length of output: 17218

Comment on lines +151 to +236
def _parse_json(self, data: Dict):
if not isinstance(data, Dict):
# Note: array sometimes comes in but won't use it
return

data_type = data.get("type")
if data_type is None:
return
elif data_type == "suite":
suite_data = data.get("suite")
if suite_data is None:
# it's might be invalid suite data
return

suite_id = suite_data.get("id")
if self._get_suite(suite_data.get("id")) is not None:
# already recorded
return

self._suites[suite_id] = TestSuite(suite_id, suite_data.get("platform"), suite_data.get("path"))
elif data_type == "testStart":
test_data = data.get("test")

if test_data is None:
# it's might be invalid test data
return
if test_data.get("line") is None:
# Still set up test case, should skip
return

suite_id = test_data.get("suiteID")
suite = self._get_suite(suite_id)

if suite_id is None or suite is None:
click.echo(click.style(
"Warning: Cannot find a parent test suite (id: {}). So won't send test result of {}".format(
suite_id, test_data.get("name")), fg='yellow'), err=True)
return

test_id = test_data.get("id")
test = self._get_test(test_id)
if test is not None:
# already recorded
return

name = test_data.get("name")
metadata = test_data.get("metadata", {})
is_skipped = metadata.get("skip", False)
suite._test_cases[test_id] = TestCase(test_id, name, is_skipped)

elif data_type == "testDone":
test_id = data.get("testID")
test = self._get_test(test_id)

if test is None:
return

test.status = data.get("result", "success") # safe fallback
duration_msec = data.get("time", 0)
test.duration = duration_msec / 1000 # to sec

elif data_type == "error":
test_id = data.get("testID")
test = self._get_test(test_id)
if test is None:
click.echo(click.style(
"Warning: Cannot find a test (id: {}). So we skip update stderr".format(test_id), fg='yellow'),
err=True)
return
test.stderr += ("\n" if test.stderr else "") + data.get("error", "")

elif data_type == "print":
# It's difficult to identify the "Retry" case because Flutter reports it with the same test ID
# So we won't handle it at the moment.
test_id = data.get("testID")
test = self._get_test(test_id)
if test is None:
click.echo(click.style(
"Warning: Cannot find a test (id: {}). So we skip update stdout".format(test_id), fg='yellow'),
err=True)
return

test.stdout += ("\n" if test.stdout else "") + data.get("message", "")

else:
return
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🛠️ Refactor suggestion

Refactor _parse_json into smaller methods

The method is handling multiple event types with similar patterns. Consider breaking it down into separate methods for each event type to improve maintainability.

 def _parse_json(self, data: Dict):
     if not isinstance(data, Dict):
         return

     data_type = data.get("type")
     if data_type is None:
         return
-    elif data_type == "suite":
-        suite_data = data.get("suite")
-        # ... suite handling ...
-    elif data_type == "testStart":
-        test_data = data.get("test")
-        # ... test start handling ...
+    
+    handlers = {
+        "suite": self._handle_suite_event,
+        "testStart": self._handle_test_start_event,
+        "testDone": self._handle_test_done_event,
+        "error": self._handle_error_event,
+        "print": self._handle_print_event
+    }
+    
+    handler = handlers.get(data_type)
+    if handler:
+        handler(data)

+def _handle_suite_event(self, data: Dict):
+    suite_data = data.get("suite")
+    if suite_data is None:
+        return
+    # ... suite handling ...

Committable suggestion skipped: line range outside the PR's diff.

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LGTM! Thanks for your great work. And I was surprised that CodeRabbit worked well.

@Konboi Konboi merged commit 8cadb9d into main Nov 18, 2024
16 checks passed
@Konboi Konboi deleted the flutter-plugin branch November 18, 2024 09:23
@github-actions github-actions bot mentioned this pull request Nov 18, 2024
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3 participants