namespace Test

	class Test

		def main
			is shared

			i as int = 3
			j as int = 7

			# substitution works with single quotes
			assert ' [i] '==' 3 '
			assert '[i] '=='3 '
			assert ' [i]'==' 3'
			assert '[i]'=='3'

			assert '[i] [j]'=='3 7'
			assert '[i][j]'=='37'

			name as String = 'world'
			assert 'Hello, [name].'=='Hello, world.'

			# nested brackets
			s as String = 'abc'
			i = 1
			#print 'the letter at [i] is [s[i]].'
			#assert 'the letter at [i] is [s[i]].'=='the letter at 1 is b.'
			si = s[i]
			assert 'the letter at [i] is [si].'=='the letter at 1 is b.'

			# substitution works with double quotes
			i = 3
			assert " [i] "==' 3 '
			assert "[i] "=='3 '
			assert " [i]"==' 3'
			assert "[i]"=='3'
			assert "[i] [j]"=='3 7'
			assert "[i][j]"=='37'
			assert "Hello, [name]."=='Hello, world.'

			# escape [ with backslash: 'do not \[sub]'
			foo = 1
			bar = 2
			assert 'foo \[bar]' == r'foo [bar]'
			assert 'foo \[bar] [foo]' == r'foo [bar] 1'
			assert 'foo [bar] \[foo]' == r'foo 2 [foo]'

			# formatting - moved to 062-string-substitution-fmt
			#mol as int = 42
			#assert '[mol:N]'=='42.00'
			#assert "[mol:N]"=='42.00'
			#assert '[mol:%2d]'=='42.00' # jvm

			# the ns prefix means "no sub" or "no substitution"
			assert ns'aoeu'=='aoeu'
			assert ns'aoeu'.length==4
			assert ns'[i]'.length==3