Class: Ace::TestRunner::Molecules::FailureAnalyzer

Inherits:
Object
  • Object
show all
Defined in:
lib/ace/test_runner/molecules/failure_analyzer.rb

Overview

Analyzes test failures and provides insights

Constant Summary collapse

COMMON_PATTERNS = 
{
  assertion: {
    pattern: /Expected: (.+)\n\s+Actual: (.+)/m,
    suggestion: "Check the assertion values. Expected and actual don't match."
  },
  nil_error: {
    pattern: /undefined method .+ for nil:NilClass/,
    suggestion: "Object is nil. Add nil check or ensure object is initialized."
  },
  missing_constant: {
    pattern: /uninitialized constant (\S+)/,
    suggestion: "Class or module not found. Check requires/imports or class name spelling."
  },
  argument_error: {
    pattern: /wrong number of arguments \(given (\d+), expected (\d+)\)/,
    suggestion: "Method called with wrong number of arguments. Check method signature."
  },
  file_not_found: {
    pattern: /No such file or directory/,
    suggestion: "File doesn't exist. Check file path or create the file."
  },
  syntax_error: {
    pattern: /syntax error/,
    suggestion: "Ruby syntax error. Check for missing brackets, quotes, or keywords."
  },
  timeout: {
    pattern: /execution expired|timeout/i,
    suggestion: "Operation timed out. Consider increasing timeout or optimizing slow code."
  }
}.freeze

Instance Method Summary collapse

Instance Method Details

#analyze_all(failures, stderr: nil) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 77

def analyze_all(failures, stderr: nil)
  return [] unless failures.is_a?(Array)

  failures.map do |failure|
    analyzed = analyze_failure(failure)
    # Associate stderr with all failures if present
    analyzed.stderr_warnings = stderr if stderr && !stderr.empty?
    analyzed
  end
end

#analyze_failure(failure_data) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 39

def analyze_failure(failure_data)
  return failure_data unless failure_data.is_a?(Hash)

  message = failure_data[:message] || failure_data[:full_content] || ""

  # Try to extract test class and method
  if failure_data[:test_name] && failure_data[:test_name].include?("#")
    parts = failure_data[:test_name].split("#")
    failure_data[:test_class] = parts[0]
    failure_data[:test_name] = parts[1]
  end

  # Analyze the error message for common patterns
  suggestion = find_suggestion(message)
  failure_data[:fix_suggestion] = suggestion if suggestion

  # Extract file and line from location if available
  if failure_data[:location] && failure_data[:location].is_a?(Hash)
    failure_data[:file_path] = failure_data[:location][:file]
    failure_data[:line_number] = failure_data[:location][:line]
  end

  # Extract code context if file and line are available
  if failure_data[:file_path] && failure_data[:line_number] && File.exist?(failure_data[:file_path])
    failure_data[:code_context] = extract_code_context(
      failure_data[:file_path],
      failure_data[:line_number]
    )
  end

  # Clean and format backtrace
  if failure_data[:backtrace]
    failure_data[:formatted_backtrace] = format_backtrace(failure_data[:backtrace])
  end

  Models::TestFailure.new(failure_data)
end

#extract_code_context(file_path, line_number, radius = 5) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 127

def extract_code_context(file_path, line_number, radius = 5)
  return nil unless File.exist?(file_path)

  lines = File.readlines(file_path)
  total_lines = lines.size
  center_line = line_number.to_i

  # Calculate the range of lines to include
  start_line = [center_line - radius, 1].max
  end_line = [center_line + radius, total_lines].min

  context = {
    file: file_path,
    center_line: center_line,
    lines: {}
  }

  (start_line..end_line).each do |line_num|
    line_content = lines[line_num - 1]
    context[:lines][line_num] = {
      content: line_content.chomp,
      highlighted: line_num == center_line
    }
  end

  context
end

#find_common_issues(failures) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 96

def find_common_issues(failures)
  issues = {}

  # Count occurrences of each type of error
  failures.each do |failure|
    COMMON_PATTERNS.each do |issue_type, config|
      if failure.message&.match?(config[:pattern])
        issues[issue_type] ||= {count: 0, failures: [], suggestion: config[:suggestion]}
        issues[issue_type][:count] += 1
        issues[issue_type][:failures] << failure
      end
    end
  end

  issues.sort_by { |_, v| -v[:count] }.to_h
end

#format_backtrace(backtrace) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 155

def format_backtrace(backtrace)
  return [] unless backtrace

  # Convert to array if it's a string
  trace_lines = backtrace.is_a?(String) ? backtrace.split("\n") : backtrace

  formatted = []
  project_root = Dir.pwd

  trace_lines.each do |line|
    # Clean up the line
    clean_line = line.strip

    # Skip minitest internal frames unless in verbose mode
    next if clean_line.include?("/minitest/") && !@verbose
    next if clean_line.include?("/bundler/") && !@verbose

    # Parse the backtrace line
    if clean_line =~ /^(.+):(\d+):in `(.+)'$/
      file = $1
      line_num = $2
      method = $3

      # Make paths relative to project root
      relative_file = file.start_with?(project_root) ?
        file.sub(project_root + "/", "") : file

      formatted << {
        file: relative_file,
        line: line_num.to_i,
        method: method,
        in_project: file.start_with?(project_root)
      }
    else
      # Keep unparseable lines as-is
      formatted << {raw: clean_line}
    end
  end

  formatted
end

#generate_fix_script(failures) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 113

def generate_fix_script(failures)
  fixes = []

  failures.each do |failure|
    if failure.message&.match?(/DEPRECATION WARNING/)
      fixes << generate_deprecation_fix(failure)
    elsif failure.message&.match?(/undefined method/)
      fixes << generate_method_fix(failure)
    end
  end

  fixes.compact
end

#group_by_file(failures) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 92

def group_by_file(failures)
  failures.group_by(&:file_path).compact
end

#group_by_type(failures) ⇒ Object 



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# File 'lib/ace/test_runner/molecules/failure_analyzer.rb', line 88

def group_by_type(failures)
  failures.group_by(&:type)
end