Edge Case Test Specifications

Critical Tests: These tests ensure robust error handling and boundary condition management.

Overview

Edge case tests validate behavior at boundaries and in error conditions.

Test Cases

EDGE_001: Empty Input

Input: Empty string ""

Expected: Error - "Input cannot be empty"

EDGE_002: Whitespace Only

Input: " \n\t "

Expected: Error - "Input cannot be empty"

EDGE_003: Missing Root Braces

Input: name = 'test'

Expected: Error - "Expected '{'"

EDGE_004: Unclosed Structures

Test Cases:

  • Unclosed brace: { name = 'test'
  • Unclosed string: { name = 'test
  • Unclosed array: { items = [1, 2

Expected: Parse error with position information

EDGE_005: Special Characters

Valid property names requiring quotes:

  • '!@#$%^&*()' = 'special'
  • 'with spaces' = 'value'
  • 'with-dash' = 123
  • '中文' = 'unicode'

EDGE_006: Extreme Values

Test Cases:

  • Max Int32: 2147483647
  • Min Int32: -2147483648
  • Very small float: 0.000000001
  • Very long string: 10,000+ characters
  • Deep nesting: 50+ levels

EDGE_007: Unicode Handling

Test strings:

  • Emoji: '😀😃😄😁'
  • Mixed scripts: '你好世界 🌍 مرحبا بالعالم'
  • Escape sequences: '\u0048\u0065\u006C\u006C\u006F'

EDGE_008: Error Recovery

Purpose: Verify meaningful error messages with position

Requirements:

  • Error includes line number
  • Error includes column number
  • Error message describes the problem
  • Parser doesn't crash on invalid input