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+" Tests for Vim9 script expressions
+
+source check.vim
+
+" Check that "line" inside ":def" results in an "error" message.
+func CheckDefFailure(line, error)
+ call writefile(['def! Func()', a:line, 'enddef'], 'Xdef')
+ call assert_fails('so Xdef', a:error, a:line)
+ call delete('Xdef')
+endfunc
+
+func CheckDefFailureList(lines, error)
+ call writefile(['def! Func()'] + a:lines + ['enddef'], 'Xdef')
+ call assert_fails('so Xdef', a:error, string(a:lines))
+ call delete('Xdef')
+endfunc
+
+" test cond ? expr : expr
+def Test_expr1()
+ assert_equal('one', true ? 'one' : 'two')
+ assert_equal('one', 1 ? 'one' : 'two')
+ assert_equal('one', 0.1 ? 'one' : 'two')
+ assert_equal('one', 'x' ? 'one' : 'two')
+" assert_equal('one', 0z1234 ? 'one' : 'two')
+ assert_equal('one', [0] ? 'one' : 'two')
+" assert_equal('one', #{x: 0} ? 'one' : 'two')
+ let var = 1
+ assert_equal('one', var ? 'one' : 'two')
+
+ assert_equal('two', false ? 'one' : 'two')
+ assert_equal('two', 0 ? 'one' : 'two')
+ assert_equal('two', 0.0 ? 'one' : 'two')
+ assert_equal('two', '' ? 'one' : 'two')
+" assert_equal('one', 0z ? 'one' : 'two')
+ assert_equal('two', [] ? 'one' : 'two')
+" assert_equal('two', {} ? 'one' : 'two')
+ var = 0
+ assert_equal('two', var ? 'one' : 'two')
+enddef
+
+func Test_expr1_fails()
+ call CheckDefFailure("let x = 1 ? 'one'", "Missing ':' after '?'")
+
+ let msg = "white space required before and after '?'"
+ call CheckDefFailure("let x = 1? 'one' : 'two'", msg)
+ call CheckDefFailure("let x = 1 ?'one' : 'two'", msg)
+ call CheckDefFailure("let x = 1?'one' : 'two'", msg)
+
+ let msg = "white space required before and after ':'"
+ call CheckDefFailure("let x = 1 ? 'one': 'two'", msg)
+ call CheckDefFailure("let x = 1 ? 'one' :'two'", msg)
+ call CheckDefFailure("let x = 1 ? 'one':'two'", msg)
+endfunc
+
+" TODO: define inside test function
+def Record(val: any): any
+ g:vals->add(val)
+ return val
+enddef
+
+" test ||
+def Test_expr2()
+ assert_equal(2, 2 || 0)
+ assert_equal(7, 0 || 0 || 7)
+ assert_equal(0, 0 || 0)
+ assert_equal('', 0 || '')
+
+ g:vals = []
+ assert_equal(3, Record(3) || Record(1))
+ assert_equal([3], g:vals)
+
+ g:vals = []
+ assert_equal(5, Record(0) || Record(5))
+ assert_equal([0, 5], g:vals)
+
+ g:vals = []
+ assert_equal(4, Record(0) || Record(4) || Record(0))
+ assert_equal([0, 4], g:vals)
+
+ g:vals = []
+ assert_equal(0, Record([]) || Record('') || Record(0))
+ assert_equal([[], '', 0], g:vals)
+enddef
+
+func Test_expr2_fails()
+ let msg = "white space required before and after '||'"
+ call CheckDefFailure("let x = 1||2", msg)
+ call CheckDefFailure("let x = 1 ||2", msg)
+ call CheckDefFailure("let x = 1|| 2", msg)
+endfunc
+
+" test &&
+def Test_expr3()
+ assert_equal(0, 2 && 0)
+ assert_equal(0, 0 && 0 && 7)
+ assert_equal(7, 2 && 3 && 7)
+ assert_equal(0, 0 && 0)
+ assert_equal(0, 0 && '')
+ assert_equal('', 8 && '')
+
+ g:vals = []
+ assert_equal(1, Record(3) && Record(1))
+ assert_equal([3, 1], g:vals)
+
+ g:vals = []
+ assert_equal(0, Record(0) && Record(5))
+ assert_equal([0], g:vals)
+
+ g:vals = []
+ assert_equal(0, Record(0) && Record(4) && Record(0))
+ assert_equal([0], g:vals)
+
+ g:vals = []
+ assert_equal(0, Record(8) && Record(4) && Record(0))
+ assert_equal([8, 4, 0], g:vals)
+
+ g:vals = []
+ assert_equal(0, Record([1]) && Record('z') && Record(0))
+ assert_equal([[1], 'z', 0], g:vals)
+enddef
+
+func Test_expr3_fails()
+ let msg = "white space required before and after '&&'"
+ call CheckDefFailure("let x = 1&&2", msg)
+ call CheckDefFailure("let x = 1 &&2", msg)
+ call CheckDefFailure("let x = 1&& 2", msg)
+endfunc
+
+let atrue = v:true
+let afalse = v:false
+let anone = v:none
+let anull = v:null
+let anint = 10
+let alsoint = 4
+if has('float')
+ let afloat = 0.1
+endif
+let astring = 'asdf'
+let ablob = 0z01ab
+let alist = [2, 3, 4]
+let adict = #{aaa: 2, bbb: 8}
+
+" test == comperator
+def Test_expr4_equal()
+ assert_equal(true, true == true)
+ assert_equal(false, true == false)
+ assert_equal(true, true == g:atrue)
+ assert_equal(false, g:atrue == false)
+
+ assert_equal(true, v:none == v:none)
+ assert_equal(false, v:none == v:null)
+ assert_equal(true, g:anone == v:none)
+ assert_equal(false, v:none == g:anull)
+
+ assert_equal(false, 2 == 0)
+ assert_equal(true, 61 == 61)
+ assert_equal(true, g:anint == 10)
+ assert_equal(false, 61 == g:anint)
+
+ if has('float')
+ assert_equal(true, 0.3 == 0.3)
+ assert_equal(false, 0.4 == 0.3)
+ assert_equal(true, 0.1 == g:afloat)
+ assert_equal(false, g:afloat == 0.3)
+
+ assert_equal(true, 3.0 == 3)
+ assert_equal(true, 3 == 3.0)
+ assert_equal(false, 3.1 == 3)
+ assert_equal(false, 3 == 3.1)
+ endif
+
+ assert_equal(true, 'abc' == 'abc')
+ assert_equal(false, 'xyz' == 'abc')
+ assert_equal(true, g:astring == 'asdf')
+ assert_equal(false, 'xyz' == g:astring)
+
+ assert_equal(false, 'abc' == 'ABC')
+ set ignorecase
+ assert_equal(false, 'abc' == 'ABC')
+ set noignorecase
+
+ assert_equal(true, 0z3f == 0z3f)
+ assert_equal(false, 0z3f == 0z4f)
+ assert_equal(true, g:ablob == 0z01ab)
+ assert_equal(false, 0z3f == g:ablob)
+
+ assert_equal(true, [1, 2, 3] == [1, 2, 3])
+ assert_equal(false, [1, 2, 3] == [2, 3, 1])
+ assert_equal(true, [2, 3, 4] == g:alist)
+ assert_equal(false, g:alist == [2, 3, 1])
+ assert_equal(false, [1, 2, 3] == [])
+ assert_equal(false, [1, 2, 3] == ['1', '2', '3'])
+
+ assert_equal(true, #{one: 1, two: 2} == #{one: 1, two: 2})
+ assert_equal(false, #{one: 1, two: 2} == #{one: 2, two: 2})
+ assert_equal(false, #{one: 1, two: 2} == #{two: 2})
+ assert_equal(false, #{one: 1, two: 2} == #{})
+ assert_equal(true, g:adict == #{bbb: 8, aaa: 2})
+ assert_equal(false, #{ccc: 9, aaa: 2} == g:adict)
+
+ assert_equal(true, function('Test_expr4_equal') == function('Test_expr4_equal'))
+ assert_equal(false, function('Test_expr4_equal') == function('Test_expr4_is'))
+
+ assert_equal(true, function('Test_expr4_equal', [123]) == function('Test_expr4_equal', [123]))
+ assert_equal(false, function('Test_expr4_equal', [123]) == function('Test_expr4_is', [123]))
+ assert_equal(false, function('Test_expr4_equal', [123]) == function('Test_expr4_equal', [999]))
+enddef
+
+" test != comperator
+def Test_expr4_notequal()
+ assert_equal(false, true != true)
+ assert_equal(true, true != false)
+ assert_equal(false, true != g:atrue)
+ assert_equal(true, g:atrue != false)
+
+ assert_equal(false, v:none != v:none)
+ assert_equal(true, v:none != v:null)
+ assert_equal(false, g:anone != v:none)
+ assert_equal(true, v:none != g:anull)
+
+ assert_equal(true, 2 != 0)
+ assert_equal(false, 55 != 55)
+ assert_equal(false, g:anint != 10)
+ assert_equal(true, 61 != g:anint)
+
+ if has('float')
+ assert_equal(false, 0.3 != 0.3)
+ assert_equal(true, 0.4 != 0.3)
+ assert_equal(false, 0.1 != g:afloat)
+ assert_equal(true, g:afloat != 0.3)
+
+ assert_equal(false, 3.0 != 3)
+ assert_equal(false, 3 != 3.0)
+ assert_equal(true, 3.1 != 3)
+ assert_equal(true, 3 != 3.1)
+ endif
+
+ assert_equal(false, 'abc' != 'abc')
+ assert_equal(true, 'xyz' != 'abc')
+ assert_equal(false, g:astring != 'asdf')
+ assert_equal(true, 'xyz' != g:astring)
+
+ assert_equal(true, 'abc' != 'ABC')
+ set ignorecase
+ assert_equal(true, 'abc' != 'ABC')
+ set noignorecase
+
+ assert_equal(false, 0z3f != 0z3f)
+ assert_equal(true, 0z3f != 0z4f)
+ assert_equal(false, g:ablob != 0z01ab)
+ assert_equal(true, 0z3f != g:ablob)
+
+ assert_equal(false, [1, 2, 3] != [1, 2, 3])
+ assert_equal(true, [1, 2, 3] != [2, 3, 1])
+ assert_equal(false, [2, 3, 4] != g:alist)
+ assert_equal(true, g:alist != [2, 3, 1])
+ assert_equal(true, [1, 2, 3] != [])
+ assert_equal(true, [1, 2, 3] != ['1', '2', '3'])
+
+ assert_equal(false, #{one: 1, two: 2} != #{one: 1, two: 2})
+ assert_equal(true, #{one: 1, two: 2} != #{one: 2, two: 2})
+ assert_equal(true, #{one: 1, two: 2} != #{two: 2})
+ assert_equal(true, #{one: 1, two: 2} != #{})
+ assert_equal(false, g:adict != #{bbb: 8, aaa: 2})
+ assert_equal(true, #{ccc: 9, aaa: 2} != g:adict)
+
+ assert_equal(false, function('Test_expr4_equal') != function('Test_expr4_equal'))
+ assert_equal(true, function('Test_expr4_equal') != function('Test_expr4_is'))
+
+ assert_equal(false, function('Test_expr4_equal', [123]) != function('Test_expr4_equal', [123]))
+ assert_equal(true, function('Test_expr4_equal', [123]) != function('Test_expr4_is', [123]))
+ assert_equal(true, function('Test_expr4_equal', [123]) != function('Test_expr4_equal', [999]))
+enddef
+
+" test > comperator
+def Test_expr4_greater()
+ assert_equal(true, 2 > 0)
+ assert_equal(true, 2 > 1)
+ assert_equal(false, 2 > 2)
+ assert_equal(false, 2 > 3)
+enddef
+
+" test >= comperator
+def Test_expr4_greaterequal()
+ assert_equal(true, 2 >= 0)
+ assert_equal(true, 2 >= 2)
+ assert_equal(false, 2 >= 3)
+enddef
+
+" test < comperator
+def Test_expr4_smaller()
+ assert_equal(false, 2 < 0)
+ assert_equal(false, 2 < 2)
+ assert_equal(true, 2 < 3)
+enddef
+
+" test <= comperator
+def Test_expr4_smallerequal()
+ assert_equal(false, 2 <= 0)
+ assert_equal(false, 2 <= 1)
+ assert_equal(true, 2 <= 2)
+ assert_equal(true, 2 <= 3)
+enddef
+
+" test =~ comperator
+def Test_expr4_match()
+ assert_equal(false, '2' =~ '0')
+ assert_equal(true, '2' =~ '[0-9]')
+enddef
+
+" test !~ comperator
+def Test_expr4_nomatch()
+ assert_equal(true, '2' !~ '0')
+ assert_equal(false, '2' !~ '[0-9]')
+enddef
+
+" test is comperator
+def Test_expr4_is()
+ let mylist = [2]
+ assert_equal(false, mylist is [2])
+ let other = mylist
+ assert_equal(true, mylist is other)
+enddef
+
+" test isnot comperator
+def Test_expr4_isnot()
+ let mylist = [2]
+ assert_equal(true, '2' isnot '0')
+ assert_equal(true, mylist isnot [2])
+ let other = mylist
+ assert_equal(false, mylist isnot other)
+enddef
+
+def RetVoid()
+ let x = 1
+enddef
+
+func Test_expr4_fails()
+ let msg = "white space required before and after '>'"
+ call CheckDefFailure("let x = 1>2", msg)
+ call CheckDefFailure("let x = 1 >2", msg)
+ call CheckDefFailure("let x = 1> 2", msg)
+
+ let msg = "white space required before and after '=='"
+ call CheckDefFailure("let x = 1==2", msg)
+ call CheckDefFailure("let x = 1 ==2", msg)
+ call CheckDefFailure("let x = 1== 2", msg)
+
+ let msg = "white space required before and after 'is'"
+ call CheckDefFailure("let x = '1'is'2'", msg)
+ call CheckDefFailure("let x = '1' is'2'", msg)
+ call CheckDefFailure("let x = '1'is '2'", msg)
+
+ let msg = "white space required before and after 'isnot'"
+ call CheckDefFailure("let x = '1'isnot'2'", msg)
+ call CheckDefFailure("let x = '1' isnot'2'", msg)
+ call CheckDefFailure("let x = '1'isnot '2'", msg)
+
+ call CheckDefFailure("let x = 1 is# 2", 'E15:')
+ call CheckDefFailure("let x = 1 is? 2", 'E15:')
+ call CheckDefFailure("let x = 1 isnot# 2", 'E15:')
+ call CheckDefFailure("let x = 1 isnot? 2", 'E15:')
+
+ call CheckDefFailure("let x = 1 == '2'", 'Cannot compare number with string')
+ call CheckDefFailure("let x = '1' == 2", 'Cannot compare string with number')
+ call CheckDefFailure("let x = 1 == RetVoid()", 'Cannot use void value')
+ call CheckDefFailure("let x = RetVoid() == 1", 'Cannot compare void with number')
+
+ call CheckDefFailure("let x = true > false", 'Cannot compare bool with bool')
+ call CheckDefFailure("let x = true >= false", 'Cannot compare bool with bool')
+ call CheckDefFailure("let x = true < false", 'Cannot compare bool with bool')
+ call CheckDefFailure("let x = true <= false", 'Cannot compare bool with bool')
+ call CheckDefFailure("let x = true =~ false", 'Cannot compare bool with bool')
+ call CheckDefFailure("let x = true !~ false", 'Cannot compare bool with bool')
+ call CheckDefFailure("let x = true is false", 'Cannot use "is" with bool')
+ call CheckDefFailure("let x = true isnot false", 'Cannot use "isnot" with bool')
+
+ call CheckDefFailure("let x = v:none is v:null", 'Cannot use "is" with special')
+ call CheckDefFailure("let x = v:none isnot v:null", 'Cannot use "isnot" with special')
+ call CheckDefFailure("let x = 123 is 123", 'Cannot use "is" with number')
+ call CheckDefFailure("let x = 123 isnot 123", 'Cannot use "isnot" with number')
+ if has('float')
+ call CheckDefFailure("let x = 1.3 is 1.3", 'Cannot use "is" with float')
+ call CheckDefFailure("let x = 1.3 isnot 1.3", 'Cannot use "isnot" with float')
+ endif
+
+ call CheckDefFailure("let x = 0za1 > 0z34", 'Cannot compare blob with blob')
+ call CheckDefFailure("let x = 0za1 >= 0z34", 'Cannot compare blob with blob')
+ call CheckDefFailure("let x = 0za1 < 0z34", 'Cannot compare blob with blob')
+ call CheckDefFailure("let x = 0za1 <= 0z34", 'Cannot compare blob with blob')
+ call CheckDefFailure("let x = 0za1 =~ 0z34", 'Cannot compare blob with blob')
+ call CheckDefFailure("let x = 0za1 !~ 0z34", 'Cannot compare blob with blob')
+
+ call CheckDefFailure("let x = [13] > [88]", 'Cannot compare list with list')
+ call CheckDefFailure("let x = [13] >= [88]", 'Cannot compare list with list')
+ call CheckDefFailure("let x = [13] < [88]", 'Cannot compare list with list')
+ call CheckDefFailure("let x = [13] <= [88]", 'Cannot compare list with list')
+ call CheckDefFailure("let x = [13] =~ [88]", 'Cannot compare list with list')
+ call CheckDefFailure("let x = [13] !~ [88]", 'Cannot compare list with list')
+endfunc
+
+" test addition, subtraction, concatenation
+def Test_expr5()
+ assert_equal(66, 60 + 6)
+ assert_equal(70, 60 + g:anint)
+ assert_equal(9, g:alsoint + 5)
+ assert_equal(14, g:alsoint + g:anint)
+
+ assert_equal(54, 60 - 6)
+ assert_equal(50, 60 - g:anint)
+ assert_equal(-1, g:alsoint - 5)
+ assert_equal(-6, g:alsoint - g:anint)
+
+ assert_equal('hello', 'hel' .. 'lo')
+ assert_equal('hello 123', 'hello ' .. 123)
+ assert_equal('123 hello', 123 .. ' hello')
+ assert_equal('123456', 123 .. 456)
+enddef
+
+def Test_expr5_float()
+ CheckFeature float
+ assert_equal(66.0, 60.0 + 6.0)
+ assert_equal(66.0, 60.0 + 6)
+ assert_equal(66.0, 60 + 6.0)
+ assert_equal(5.1, g:afloat + 5)
+ assert_equal(8.1, 8 + g:afloat)
+ assert_equal(10.1, g:anint + g:afloat)
+ assert_equal(10.1, g:afloat + g:anint)
+
+ assert_equal(54.0, 60.0 - 6.0)
+ assert_equal(54.0, 60.0 - 6)
+ assert_equal(54.0, 60 - 6.0)
+ assert_equal(-4.9, g:afloat - 5)
+ assert_equal(7.9, 8 - g:afloat)
+ assert_equal(9.9, g:anint - g:afloat)
+ assert_equal(-9.9, g:afloat - g:anint)
+enddef
+
+func Test_expr5_fails()
+ let msg = "white space required before and after '+'"
+ call CheckDefFailure("let x = 1+2", msg)
+ call CheckDefFailure("let x = 1 +2", msg)
+ call CheckDefFailure("let x = 1+ 2", msg)
+
+ let msg = "white space required before and after '-'"
+ call CheckDefFailure("let x = 1-2", msg)
+ call CheckDefFailure("let x = 1 -2", msg)
+ call CheckDefFailure("let x = 1- 2", msg)
+
+ let msg = "white space required before and after '..'"
+ call CheckDefFailure("let x = '1'..'2'", msg)
+ call CheckDefFailure("let x = '1' ..'2'", msg)
+ call CheckDefFailure("let x = '1'.. '2'", msg)
+endfunc
+
+" test multiply, divide, modulo
+def Test_expr6()
+ assert_equal(36, 6 * 6)
+ assert_equal(24, 6 * g:alsoint)
+ assert_equal(24, g:alsoint * 6)
+ assert_equal(40, g:anint * g:alsoint)
+
+ assert_equal(10, 60 / 6)
+ assert_equal(6, 60 / g:anint)
+ assert_equal(1, g:anint / 6)
+ assert_equal(2, g:anint / g:alsoint)
+
+ assert_equal(5, 11 % 6)
+ assert_equal(4, g:anint % 6)
+ assert_equal(3, 13 % g:anint)
+ assert_equal(2, g:anint % g:alsoint)
+
+ assert_equal(4, 6 * 4 / 6)
+enddef
+
+def Test_expr6_float()
+ CheckFeature float
+
+ assert_equal(36.0, 6.0 * 6)
+ assert_equal(36.0, 6 * 6.0)
+ assert_equal(36.0, 6.0 * 6.0)
+ assert_equal(1.0, g:afloat * g:anint)
+
+ assert_equal(10.0, 60 / 6.0)
+ assert_equal(10.0, 60.0 / 6)
+ assert_equal(10.0, 60.0 / 6.0)
+ assert_equal(0.01, g:afloat / g:anint)
+
+ assert_equal(4.0, 6.0 * 4 / 6)
+ assert_equal(4.0, 6 * 4.0 / 6)
+ assert_equal(4.0, 6 * 4 / 6.0)
+ assert_equal(4.0, 6.0 * 4.0 / 6)
+ assert_equal(4.0, 6 * 4.0 / 6.0)
+ assert_equal(4.0, 6.0 * 4 / 6.0)
+ assert_equal(4.0, 6.0 * 4.0 / 6.0)
+
+ assert_equal(4.0, 6.0 * 4.0 / 6.0)
+enddef
+
+func Test_expr6_fails()
+ let msg = "white space required before and after '*'"
+ call CheckDefFailure("let x = 1*2", msg)
+ call CheckDefFailure("let x = 1 *2", msg)
+ call CheckDefFailure("let x = 1* 2", msg)
+
+ let msg = "white space required before and after '/'"
+ call CheckDefFailure("let x = 1/2", msg)
+ call CheckDefFailure("let x = 1 /2", msg)
+ call CheckDefFailure("let x = 1/ 2", msg)
+
+ let msg = "white space required before and after '%'"
+ call CheckDefFailure("let x = 1%2", msg)
+ call CheckDefFailure("let x = 1 %2", msg)
+ call CheckDefFailure("let x = 1% 2", msg)
+
+ call CheckDefFailure("let x = '1' * '2'", 'E1036:')
+ call CheckDefFailure("let x = '1' / '2'", 'E1036:')
+ call CheckDefFailure("let x = '1' % '2'", 'E1035:')
+
+ call CheckDefFailure("let x = 0z01 * 0z12", 'E1036:')
+ call CheckDefFailure("let x = 0z01 / 0z12", 'E1036:')
+ call CheckDefFailure("let x = 0z01 % 0z12", 'E1035:')
+
+ call CheckDefFailure("let x = [1] * [2]", 'E1036:')
+ call CheckDefFailure("let x = [1] / [2]", 'E1036:')
+ call CheckDefFailure("let x = [1] % [2]", 'E1035:')
+
+ call CheckDefFailure("let x = #{one: 1} * #{two: 2}", 'E1036:')
+ call CheckDefFailure("let x = #{one: 1} / #{two: 2}", 'E1036:')
+ call CheckDefFailure("let x = #{one: 1} % #{two: 2}", 'E1035:')
+
+endfunc
+
+func Test_expr6_float_fails()
+ CheckFeature float
+ call CheckDefFailure("let x = 1.0 % 2", 'E1035:')
+endfunc
+
+" define here to use old style parsing
+if has('float')
+ let g:float_zero = 0.0
+ let g:float_neg = -9.8
+ let g:float_big = 9.9e99
+endif
+let g:blob_empty = 0z
+let g:blob_one = 0z01
+let g:blob_long = 0z0102.0304
+
+let g:string_empty = ''
+let g:string_short = 'x'
+let g:string_long = 'abcdefghijklm'
+let g:string_special = "ab\ncd\ref\ekk"
+
+let g:special_true = v:true
+let g:special_false = v:false
+let g:special_null = v:null
+let g:special_none = v:none
+
+let g:list_empty = []
+let g:list_mixed = [1, 'b', v:false]
+
+let g:dict_empty = {}
+let g:dict_one = #{one: 1}
+
+let $TESTVAR = 'testvar'
+
+let @a = 'register a'
+
+" test low level expression
+def Test_expr7_number()
+ " number constant
+ assert_equal(0, 0)
+ assert_equal(654, 0654)
+
+ assert_equal(6, 0x6)
+ assert_equal(15, 0xf)
+ assert_equal(255, 0xff)
+enddef
+
+def Test_expr7_float()
+ " float constant
+ if has('float')
+ assert_equal(g:float_zero, .0)
+ assert_equal(g:float_zero, 0.0)
+ assert_equal(g:float_neg, -9.8)
+ assert_equal(g:float_big, 9.9e99)
+ endif
+enddef
+
+def Test_expr7_blob()
+ " blob constant
+ assert_equal(g:blob_empty, 0z)
+ assert_equal(g:blob_one, 0z01)
+ assert_equal(g:blob_long, 0z0102.0304)
+enddef
+
+def Test_expr7_string()
+ " string constant
+ assert_equal(g:string_empty, '')
+ assert_equal(g:string_empty, "")
+ assert_equal(g:string_short, 'x')
+ assert_equal(g:string_short, "x")
+ assert_equal(g:string_long, 'abcdefghijklm')
+ assert_equal(g:string_long, "abcdefghijklm")
+ assert_equal(g:string_special, "ab\ncd\ref\ekk")
+enddef
+
+def Test_expr7_special()
+ " special constant
+ assert_equal(g:special_true, true)
+ assert_equal(g:special_false, false)
+ assert_equal(g:special_null, v:null)
+ assert_equal(g:special_none, v:none)
+enddef
+
+def Test_expr7_list()
+ " list
+ assert_equal(g:list_empty, [])
+ assert_equal(g:list_empty, [ ])
+ assert_equal(g:list_mixed, [1, 'b', false])
+enddef
+
+def Test_expr7_lambda()
+ " lambda
+ let La = { -> 'result'}
+ assert_equal('result', La())
+ assert_equal([1, 3, 5], [1, 2, 3]->map({key, val -> key + val}))
+enddef
+
+def Test_expr7_dict()
+ " dictionary
+ assert_equal(g:dict_empty, {})
+ assert_equal(g:dict_empty, { })
+ assert_equal(g:dict_one, {'one': 1})
+ let key = 'one'
+ let val = 1
+ assert_equal(g:dict_one, {key: val})
+enddef
+
+def Test_expr7_option()
+ " option
+ set ts=11
+ assert_equal(11, &ts)
+ set ts=8
+ set grepprg=some\ text
+ assert_equal('some text', &grepprg)
+ set grepprg&
+enddef
+
+def Test_expr7_environment()
+ " environment variable
+ assert_equal('testvar', $TESTVAR)
+ assert_equal('', $ASDF_ASD_XXX)
+enddef
+
+def Test_expr7_register()
+ " register
+ assert_equal('register a', @a)
+enddef
+
+def Test_expr7_parens()
+ " (expr)
+ assert_equal(4, (6 * 4) / 6)
+ assert_equal(0, 6 * ( 4 / 6 ))
+
+ assert_equal(6, +6)
+ assert_equal(-6, -6)
+ assert_equal(6, --6)
+ assert_equal(6, -+-6)
+ assert_equal(-6, ---6)
+enddef
+
+def Test_expr7_not()
+ assert_equal(true, !'')
+ assert_equal(true, ![])
+ assert_equal(false, !'asdf')
+ assert_equal(false, ![2])
+ assert_equal(true, !!'asdf')
+ assert_equal(true, !![2])
+enddef
+
+func Test_expr7_fails()
+ call CheckDefFailure("let x = (12", "E110:")
+
+ call CheckDefFailure("let x = -'xx'", "E1030:")
+ call CheckDefFailure("let x = +'xx'", "E1030:")
+
+ call CheckDefFailure("let x = @", "E1002:")
+ call CheckDefFailure("let x = @<", "E354:")
+endfunc
+
+let g:Funcrefs = [function('add')]
+
+func CallMe(arg)
+ return a:arg
+endfunc
+
+def Test_expr7_trailing()
+ " user function call
+ assert_equal(123, CallMe(123))
+ assert_equal('nothing', CallMe('nothing'))
+
+ " partial call
+ let Part = function('CallMe')
+ assert_equal('yes', Part('yes'))
+
+ " funcref call, using list index
+ let l = []
+ g:Funcrefs[0](l, 2)
+ assert_equal([2], l)
+
+ " method call
+ l = [2, 5, 6]
+ l->map({k, v -> k + v})
+ assert_equal([2, 6, 8], l)
+
+ " lambda method call
+ l = [2, 5]
+ l->{l -> add(l, 8)}()
+ assert_equal([2, 5, 8], l)
+
+ " dict member
+ let d = #{key: 123}
+ assert_equal(123, d.key)
+enddef
+
+func Test_expr7_trailing_fails()
+ call CheckDefFailureList(['let l = [2]', 'l->{l -> add(l, 8)}'], 'E107')
+endfunc
+
+func Test_expr_fails()
+ call CheckDefFailure("let x = '1'is2", 'E488:')
+ call CheckDefFailure("let x = '1'isnot2", 'E488:')
+endfunc