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Validating C# Language Tokenization Implementation in Monaco Editor

This test suite validates the C# language syntax highlighting and tokenization functionality in the Monaco Editor. It ensures proper parsing and coloring of C# code elements including keywords, comments, strings, numbers, and special syntax constructs.
Test Coverage Overview

The test suite provides comprehensive coverage of C# language tokenization, verifying correct handling of:
Basic syntax elements like keywords, identifiers, and delimiters
String literals including verbatim strings and string interpolation
Numeric literals in various formats (decimal, hex, binary, float)
Comments (single-line and multi-line)
Edge cases around escape sequences and special characters
Implementation Analysis

The testing approach uses a structured pattern of test cases that validate token classification and boundaries. Each test case provides input code snippets and expected token sequences with precise start indexes and token types. The implementation leverages Monaco’s built-in tokenization framework to parse and categorize code elements.
Technical Details

Testing Framework: Custom testRunner with testTokenization function
Token Properties: startIndex, type
Token Categories: keywords, comments, strings, numbers, delimiters, identifiers
File Format: TypeScript test definitions
Best Practices Demonstrated

The test suite demonstrates several testing best practices:
Systematic coverage of language features
Explicit token boundary testing
Comprehensive edge case validation
Clear test case organization
Detailed token classification verification
microsoft/monaco-editor

src/basic-languages/csharp/csharp.test.ts
            
/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/

import { testTokenization } from '../test/testRunner';

testTokenization('csharp', [
	// Generated from sample
	[
		{
			line: 'using System;',
			tokens: [
				{ startIndex: 0, type: 'keyword.using.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'namespace.cs' },
				{ startIndex: 12, type: 'delimiter.cs' }
			]
		},
		{
			line: 'using System.Collections.Generic;',
			tokens: [
				{ startIndex: 0, type: 'keyword.using.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'namespace.cs' },
				{ startIndex: 12, type: 'delimiter.cs' },
				{ startIndex: 13, type: 'namespace.cs' },
				{ startIndex: 24, type: 'delimiter.cs' },
				{ startIndex: 25, type: 'namespace.cs' },
				{ startIndex: 32, type: 'delimiter.cs' }
			]
		},
		{
			line: 'using System.Diagnostics;',
			tokens: [
				{ startIndex: 0, type: 'keyword.using.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'namespace.cs' },
				{ startIndex: 12, type: 'delimiter.cs' },
				{ startIndex: 13, type: 'namespace.cs' },
				{ startIndex: 24, type: 'delimiter.cs' }
			]
		},
		{
			line: 'using System.Linq;',
			tokens: [
				{ startIndex: 0, type: 'keyword.using.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'namespace.cs' },
				{ startIndex: 12, type: 'delimiter.cs' },
				{ startIndex: 13, type: 'namespace.cs' },
				{ startIndex: 17, type: 'delimiter.cs' }
			]
		},
		{
			line: 'using System.Text;',
			tokens: [
				{ startIndex: 0, type: 'keyword.using.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'namespace.cs' },
				{ startIndex: 12, type: 'delimiter.cs' },
				{ startIndex: 13, type: 'namespace.cs' },
				{ startIndex: 17, type: 'delimiter.cs' }
			]
		},
		{
			line: 'using System.Threading.Tasks;',
			tokens: [
				{ startIndex: 0, type: 'keyword.using.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'namespace.cs' },
				{ startIndex: 12, type: 'delimiter.cs' },
				{ startIndex: 13, type: 'namespace.cs' },
				{ startIndex: 22, type: 'delimiter.cs' },
				{ startIndex: 23, type: 'namespace.cs' },
				{ startIndex: 28, type: 'delimiter.cs' }
			]
		},
		{
			line: '',
			tokens: []
		},
		{
			line: 'namespace VS',
			tokens: [
				{ startIndex: 0, type: 'keyword.namespace.cs' },
				{ startIndex: 9, type: '' },
				{ startIndex: 10, type: 'namespace.cs' }
			]
		},
		{
			line: '{',
			tokens: [{ startIndex: 0, type: 'delimiter.curly.cs' }]
		},
		{
			line: '	class Program',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 1, type: 'keyword.class.cs' },
				{ startIndex: 6, type: '' },
				{ startIndex: 7, type: 'identifier.cs' }
			]
		},
		{
			line: '	{',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 1, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '		static void Main(string[] args)',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 2, type: 'keyword.static.cs' },
				{ startIndex: 8, type: '' },
				{ startIndex: 9, type: 'keyword.void.cs' },
				{ startIndex: 13, type: '' },
				{ startIndex: 14, type: 'identifier.cs' },
				{ startIndex: 18, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 19, type: 'keyword.string.cs' },
				{ startIndex: 25, type: 'delimiter.square.cs' },
				{ startIndex: 27, type: '' },
				{ startIndex: 28, type: 'identifier.cs' },
				{ startIndex: 32, type: 'delimiter.parenthesis.cs' }
			]
		},
		{
			line: '		{',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 2, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '			ProcessStartInfo si = new ProcessStartInfo();',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'identifier.cs' },
				{ startIndex: 19, type: '' },
				{ startIndex: 20, type: 'identifier.cs' },
				{ startIndex: 22, type: '' },
				{ startIndex: 23, type: 'delimiter.cs' },
				{ startIndex: 24, type: '' },
				{ startIndex: 25, type: 'keyword.new.cs' },
				{ startIndex: 28, type: '' },
				{ startIndex: 29, type: 'identifier.cs' },
				{ startIndex: 45, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 47, type: 'delimiter.cs' }
			]
		},
		{
			line: '			float load= 3.2e02f;',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'keyword.float.cs' },
				{ startIndex: 8, type: '' },
				{ startIndex: 9, type: 'identifier.cs' },
				{ startIndex: 13, type: 'delimiter.cs' },
				{ startIndex: 14, type: '' },
				{ startIndex: 15, type: 'number.float.cs' },
				{ startIndex: 22, type: 'delimiter.cs' }
			]
		},
		{
			line: '',
			tokens: []
		},
		{
			line: '			si.FileName = @"tools\\\\node.exe";',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'identifier.cs' },
				{ startIndex: 5, type: 'delimiter.cs' },
				{ startIndex: 6, type: 'identifier.cs' },
				{ startIndex: 14, type: '' },
				{ startIndex: 15, type: 'delimiter.cs' },
				{ startIndex: 16, type: '' },
				{ startIndex: 17, type: 'string.quote.cs' },
				{ startIndex: 19, type: 'string.cs' },
				{ startIndex: 34, type: 'string.quote.cs' },
				{ startIndex: 35, type: 'delimiter.cs' }
			]
		},
		{
			line: '			si.Arguments = "tools\\\\simpl3server.js";',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'identifier.cs' },
				{ startIndex: 5, type: 'delimiter.cs' },
				{ startIndex: 6, type: 'identifier.cs' },
				{ startIndex: 15, type: '' },
				{ startIndex: 16, type: 'delimiter.cs' },
				{ startIndex: 17, type: '' },
				{ startIndex: 18, type: 'string.quote.cs' },
				{ startIndex: 19, type: 'string.cs' },
				{ startIndex: 24, type: 'string.escape.cs' },
				{ startIndex: 26, type: 'string.cs' },
				{ startIndex: 41, type: 'string.quote.cs' },
				{ startIndex: 42, type: 'delimiter.cs' }
			]
		},
		{
			line: '			',
			tokens: [{ startIndex: 0, type: '' }]
		},
		{
			line: '			string someString = $"hello{outside+variable}the string again {{ escaped";',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'keyword.string.cs' },
				{ startIndex: 9, type: '' },
				{ startIndex: 10, type: 'identifier.cs' },
				{ startIndex: 20, type: '' },
				{ startIndex: 21, type: 'delimiter.cs' },
				{ startIndex: 22, type: '' },
				{ startIndex: 23, type: 'string.quote.cs' },
				{ startIndex: 25, type: 'string.cs' },
				{ startIndex: 30, type: 'string.quote.cs' },
				{ startIndex: 31, type: 'identifier.cs' },
				{ startIndex: 38, type: 'delimiter.cs' },
				{ startIndex: 39, type: 'identifier.cs' },
				{ startIndex: 47, type: 'string.quote.cs' },
				{ startIndex: 48, type: 'string.cs' },
				{ startIndex: 65, type: 'string.escape.cs' },
				{ startIndex: 67, type: 'string.cs' },
				{ startIndex: 75, type: 'string.quote.cs' },
				{ startIndex: 76, type: 'delimiter.cs' }
			]
		},
		{
			line: '			var @string = 5;',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'keyword.var.cs' },
				{ startIndex: 6, type: '' },
				{ startIndex: 7, type: 'identifier.cs' },
				{ startIndex: 14, type: '' },
				{ startIndex: 15, type: 'delimiter.cs' },
				{ startIndex: 16, type: '' },
				{ startIndex: 17, type: 'number.cs' },
				{ startIndex: 18, type: 'delimiter.cs' }
			]
		},
		{
			line: '			',
			tokens: [{ startIndex: 0, type: '' }]
		},
		{
			line: '			if (x == 4)',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'keyword.if.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 7, type: 'identifier.cs' },
				{ startIndex: 8, type: '' },
				{ startIndex: 9, type: 'delimiter.cs' },
				{ startIndex: 11, type: '' },
				{ startIndex: 12, type: 'number.cs' },
				{ startIndex: 13, type: 'delimiter.parenthesis.cs' }
			]
		},
		{
			line: '			{',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '				for (int i = 4; i<10; i++)',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 4, type: 'keyword.for.cs' },
				{ startIndex: 7, type: '' },
				{ startIndex: 8, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 9, type: 'keyword.int.cs' },
				{ startIndex: 12, type: '' },
				{ startIndex: 13, type: 'identifier.cs' },
				{ startIndex: 14, type: '' },
				{ startIndex: 15, type: 'delimiter.cs' },
				{ startIndex: 16, type: '' },
				{ startIndex: 17, type: 'number.cs' },
				{ startIndex: 18, type: 'delimiter.cs' },
				{ startIndex: 19, type: '' },
				{ startIndex: 20, type: 'identifier.cs' },
				{ startIndex: 21, type: 'delimiter.angle.cs' },
				{ startIndex: 22, type: 'number.cs' },
				{ startIndex: 24, type: 'delimiter.cs' },
				{ startIndex: 25, type: '' },
				{ startIndex: 26, type: 'identifier.cs' },
				{ startIndex: 27, type: 'delimiter.cs' },
				{ startIndex: 29, type: 'delimiter.parenthesis.cs' }
			]
		},
		{
			line: '				{',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 4, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '					var d = i;',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 5, type: 'keyword.var.cs' },
				{ startIndex: 8, type: '' },
				{ startIndex: 9, type: 'identifier.cs' },
				{ startIndex: 10, type: '' },
				{ startIndex: 11, type: 'delimiter.cs' },
				{ startIndex: 12, type: '' },
				{ startIndex: 13, type: 'identifier.cs' },
				{ startIndex: 14, type: 'delimiter.cs' }
			]
		},
		{
			line: '				}',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 4, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '			}',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '			else',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'keyword.else.cs' }
			]
		},
		{
			line: '			{',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '				return;',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 4, type: 'keyword.return.cs' },
				{ startIndex: 10, type: 'delimiter.cs' }
			]
		},
		{
			line: '			}',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '			',
			tokens: [{ startIndex: 0, type: '' }]
		},
		{
			line: '',
			tokens: []
		},
		{
			line: '			Process.Start(si);',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 3, type: 'identifier.cs' },
				{ startIndex: 10, type: 'delimiter.cs' },
				{ startIndex: 11, type: 'identifier.cs' },
				{ startIndex: 16, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 17, type: 'identifier.cs' },
				{ startIndex: 19, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 20, type: 'delimiter.cs' }
			]
		},
		{
			line: '		}',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 2, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '	}',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 1, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '}',
			tokens: [{ startIndex: 0, type: 'delimiter.curly.cs' }]
		},
		{
			line: '',
			tokens: []
		},
		{
			line: '#pragma region /MapLayer/*Image* /// ',
			tokens: [{ startIndex: 0, type: 'namespace.cpp.cs' }]
		},
		{
			line: 'namespace ShouldNotBeAComment {}',
			tokens: [
				{ startIndex: 0, type: 'keyword.namespace.cs' },
				{ startIndex: 9, type: '' },
				{ startIndex: 10, type: 'namespace.cs' },
				{ startIndex: 29, type: '' },
				{ startIndex: 30, type: 'delimiter.curly.cs' }
			]
		},
		{
			line: '#pragma endregion Region_1',
			tokens: [{ startIndex: 0, type: 'namespace.cpp.cs' }]
		}
	],

	// Keywords
	[
		{
			line: 'namespace VS { class Program { static void Main(string[] args) {} } }',
			tokens: [
				{ startIndex: 0, type: 'keyword.namespace.cs' },
				{ startIndex: 9, type: '' },
				{ startIndex: 10, type: 'namespace.cs' },
				{ startIndex: 12, type: '' },
				{ startIndex: 13, type: 'delimiter.curly.cs' },
				{ startIndex: 14, type: '' },
				{ startIndex: 15, type: 'keyword.class.cs' },
				{ startIndex: 20, type: '' },
				{ startIndex: 21, type: 'identifier.cs' },
				{ startIndex: 28, type: '' },
				{ startIndex: 29, type: 'delimiter.curly.cs' },
				{ startIndex: 30, type: '' },
				{ startIndex: 31, type: 'keyword.static.cs' },
				{ startIndex: 37, type: '' },
				{ startIndex: 38, type: 'keyword.void.cs' },
				{ startIndex: 42, type: '' },
				{ startIndex: 43, type: 'identifier.cs' },
				{ startIndex: 47, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 48, type: 'keyword.string.cs' },
				{ startIndex: 54, type: 'delimiter.square.cs' },
				{ startIndex: 56, type: '' },
				{ startIndex: 57, type: 'identifier.cs' },
				{ startIndex: 61, type: 'delimiter.parenthesis.cs' },
				{ startIndex: 62, type: '' },
				{ startIndex: 63, type: 'delimiter.curly.cs' },
				{ startIndex: 65, type: '' },
				{ startIndex: 66, type: 'delimiter.curly.cs' },
				{ startIndex: 67, type: '' },
				{ startIndex: 68, type: 'delimiter.curly.cs' }
			]
		}
	],

	// Comments - single line
	[
		{
			line: '//',
			tokens: [{ startIndex: 0, type: 'comment.cs' }]
		}
	],

	[
		{
			line: '    // a comment',
			tokens: [
				{ startIndex: 0, type: '' },
				{ startIndex: 4, type: 'comment.cs' }
			]
		}
	],

	[
		{
			line: '// a comment',
			tokens: [{ startIndex: 0, type: 'comment.cs' }]
		}
	],

	[
		{
			line: '//sticky comment',
			tokens: [{ startIndex: 0, type: 'comment.cs' }]
		}
	],

	[
		{
			line: '/almost a comment',
			tokens: [
				{ startIndex: 0, type: 'delimiter.cs' },
				{ startIndex: 1, type: 'identifier.cs' },
				{ startIndex: 7, type: '' },
				{ startIndex: 8, type: 'identifier.cs' },
				{ startIndex: 9, type: '' },
				{ startIndex: 10, type: 'identifier.cs' }
			]
		}
	],

	[
		{
			line: '1 / 2; /* comment',
			tokens: [
				{ startIndex: 0, type: 'number.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'number.cs' },
				{ startIndex: 5, type: 'delimiter.cs' },
				{ startIndex: 6, type: '' },
				{ startIndex: 7, type: 'comment.cs' }
			]
		}
	],

	[
		{
			line: 'var x = 1; // my comment // is a nice one',
			tokens: [
				{ startIndex: 0, type: 'keyword.var.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'identifier.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'delimiter.cs' },
				{ startIndex: 7, type: '' },
				{ startIndex: 8, type: 'number.cs' },
				{ startIndex: 9, type: 'delimiter.cs' },
				{ startIndex: 10, type: '' },
				{ startIndex: 11, type: 'comment.cs' }
			]
		}
	],

	// Comments - range comment, single line
	[
		{
			line: '/* a simple comment */',
			tokens: [{ startIndex: 0, type: 'comment.cs' }]
		}
	],

	[
		{
			line: 'var x = /* a simple comment */ 1;',
			tokens: [
				{ startIndex: 0, type: 'keyword.var.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'identifier.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'delimiter.cs' },
				{ startIndex: 7, type: '' },
				{ startIndex: 8, type: 'comment.cs' },
				{ startIndex: 30, type: '' },
				{ startIndex: 31, type: 'number.cs' },
				{ startIndex: 32, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'var x = /* comment */ 1; */',
			tokens: [
				{ startIndex: 0, type: 'keyword.var.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'identifier.cs' },
				{ startIndex: 5, type: '' },
				{ startIndex: 6, type: 'delimiter.cs' },
				{ startIndex: 7, type: '' },
				{ startIndex: 8, type: 'comment.cs' },
				{ startIndex: 21, type: '' },
				{ startIndex: 22, type: 'number.cs' },
				{ startIndex: 23, type: 'delimiter.cs' },
				{ startIndex: 24, type: '' }
			]
		}
	],

	[
		{
			line: 'x = /**/;',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'comment.cs' },
				{ startIndex: 8, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'x = /*/;',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'comment.cs' }
			]
		}
	],

	// Numbers
	[
		{
			line: '0',
			tokens: [{ startIndex: 0, type: 'number.cs' }]
		}
	],

	[
		{
			line: '123_456',
			tokens: [{ startIndex: 0, type: 'number.cs' }]
		}
	],

	[
		{
			line: '0x',
			tokens: [
				{ startIndex: 0, type: 'number.cs' },
				{ startIndex: 1, type: 'identifier.cs' }
			]
		}
	],

	[
		{
			line: '0b',
			tokens: [
				{ startIndex: 0, type: 'number.cs' },
				{ startIndex: 1, type: 'identifier.cs' }
			]
		}
	],

	[
		{
			line: '0x123',
			tokens: [{ startIndex: 0, type: 'number.hex.cs' }]
		}
	],

	[
		{
			line: '0x123_456',
			tokens: [{ startIndex: 0, type: 'number.hex.cs' }]
		}
	],

	[
		{
			line: '0b101',
			tokens: [{ startIndex: 0, type: 'number.hex.cs' }]
		}
	],

	[
		{
			line: '0b1010_0001',
			tokens: [{ startIndex: 0, type: 'number.hex.cs' }]
		}
	],

	[
		{
			line: '23.5',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1_23.5',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '23.5e3',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '23.5E3',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '23.5F',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '23.5f',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '2_3.5f',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72E3F',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72E3f',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72e3F',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72e3f',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '23.5D',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '456_123.5D',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '23.5d',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72E3D',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72E3d',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.720_123E3d',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72e3D',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '1.72e3d',
			tokens: [{ startIndex: 0, type: 'number.float.cs' }]
		}
	],

	[
		{
			line: '0+0',
			tokens: [
				{ startIndex: 0, type: 'number.cs' },
				{ startIndex: 1, type: 'delimiter.cs' },
				{ startIndex: 2, type: 'number.cs' }
			]
		}
	],

	[
		{
			line: '100+10',
			tokens: [
				{ startIndex: 0, type: 'number.cs' },
				{ startIndex: 3, type: 'delimiter.cs' },
				{ startIndex: 4, type: 'number.cs' }
			]
		}
	],

	[
		{
			line: '0 + 0',
			tokens: [
				{ startIndex: 0, type: 'number.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'number.cs' }
			]
		}
	],

	// Strings
	[
		{
			line: 'x = "string";',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 5, type: 'string.cs' },
				{ startIndex: 11, type: 'string.quote.cs' },
				{ startIndex: 12, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'x = "stri\\"ng";',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 5, type: 'string.cs' },
				{ startIndex: 9, type: 'string.escape.cs' },
				{ startIndex: 11, type: 'string.cs' },
				{ startIndex: 13, type: 'string.quote.cs' },
				{ startIndex: 14, type: 'delimiter.cs' }
			]
		}
	],

	// Verbatim Strings
	[
		{
			line: 'x = @"verbatimstring";',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 6, type: 'string.cs' },
				{ startIndex: 20, type: 'string.quote.cs' },
				{ startIndex: 21, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'x = @"verbatim""string";',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 6, type: 'string.cs' },
				{ startIndex: 14, type: 'string.escape.cs' },
				{ startIndex: 16, type: 'string.cs' },
				{ startIndex: 22, type: 'string.quote.cs' },
				{ startIndex: 23, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'x = @"verbatim\\string\\";',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 6, type: 'string.cs' },
				{ startIndex: 22, type: 'string.quote.cs' },
				{ startIndex: 23, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'x = @"verbatim',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 6, type: 'string.cs' }
			]
		},
		{
			line: 'string";',
			tokens: [
				{ startIndex: 0, type: 'string.cs' },
				{ startIndex: 6, type: 'string.quote.cs' },
				{ startIndex: 7, type: 'delimiter.cs' }
			]
		}
	],

	[
		{
			line: 'x = $@"verbatim {interpolated} string{{}}"" ";',
			tokens: [
				{ startIndex: 0, type: 'identifier.cs' },
				{ startIndex: 1, type: '' },
				{ startIndex: 2, type: 'delimiter.cs' },
				{ startIndex: 3, type: '' },
				{ startIndex: 4, type: 'string.quote.cs' },
				{ startIndex: 7, type: 'string.cs' },
				{ startIndex: 16, type: 'string.quote.cs' },
				{ startIndex: 17, type: 'identifier.cs' },
				{ startIndex: 29, type: 'string.quote.cs' },
				{ startIndex: 30, type: 'string.cs' },
				{ startIndex: 37, type: 'string.escape.cs' },
				{ startIndex: 39, type: 'string.cs' },
				{ startIndex: 41, type: 'string.escape.cs' },
				{ startIndex: 43, type: 'string.cs' },
				{ startIndex: 44, type: 'string.quote.cs' },
				{ startIndex: 45, type: 'delimiter.cs' }
			]
		}
	]
]);