1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
local helpers = require('test.functional.helpers')(after_each)
local clear = helpers.clear
local eq = helpers.eq
local exec_lua = helpers.exec_lua
local feed = helpers.feed
local matches = helpers.matches
local pcall_err = helpers.pcall_err
describe('vim.snippet', function()
before_each(function()
clear()
exec_lua([[
vim.keymap.set({ 'i', 's' }, '<Tab>', function() vim.snippet.jump(1) end, { buffer = true })
vim.keymap.set({ 'i', 's' }, '<S-Tab>', function() vim.snippet.jump(-1) end, { buffer = true })
]])
end)
after_each(clear)
--- @param snippet string[]
--- @param expected string[]
--- @param settings? string
--- @param prefix? string
local function test_success(snippet, expected, settings, prefix)
if settings then
exec_lua(settings)
end
if prefix then
feed('i' .. prefix)
end
exec_lua('vim.snippet.expand(...)', table.concat(snippet, '\n'))
eq(expected, helpers.buf_lines(0))
end
--- @param snippet string
--- @param err string
local function test_fail(snippet, err)
matches(err, pcall_err(exec_lua, string.format('vim.snippet.expand("%s")', snippet)))
end
it('adds base indentation to inserted text', function()
test_success(
{ 'function $1($2)', ' $0', 'end' },
{ ' function ()', ' ', ' end' },
'',
' '
)
end)
it('replaces tabs with spaces when expandtab is set', function()
test_success(
{ 'function $1($2)', '\t$0', 'end' },
{ 'function ()', ' ', 'end' },
[[
vim.o.expandtab = true
vim.o.shiftwidth = 2
]]
)
end)
it('respects tabs when expandtab is not set', function()
test_success(
{ 'function $1($2)', '\t$0', 'end' },
{ 'function ()', '\t', 'end' },
'vim.o.expandtab = false'
)
end)
it('inserts known variable value', function()
test_success({ '; print($TM_CURRENT_LINE)' }, { 'foo; print(foo)' }, nil, 'foo')
end)
it('uses default when variable is not set', function()
test_success({ 'print(${TM_CURRENT_WORD:foo})' }, { 'print(foo)' })
end)
it('replaces unknown variables by placeholders', function()
test_success({ 'print($UNKNOWN)' }, { 'print(UNKNOWN)' })
end)
it('does not jump outside snippet range', function()
test_success({ 'function $1($2)', ' $0', 'end' }, { 'function ()', ' ', 'end' })
eq(false, exec_lua('return vim.snippet.jumpable(-1)'))
feed('<Tab><Tab>i')
eq(false, exec_lua('return vim.snippet.jumpable(1)'))
end)
it('navigates backwards', function()
test_success({ 'function $1($2) end' }, { 'function () end' })
feed('<Tab><S-Tab>foo')
eq({ 'function foo() end' }, helpers.buf_lines(0))
end)
it('visits all tabstops', function()
local function cursor()
return exec_lua('return vim.api.nvim_win_get_cursor(0)')
end
test_success({ 'function $1($2)', ' $0', 'end' }, { 'function ()', ' ', 'end' })
eq({ 1, 9 }, cursor())
feed('<Tab>')
eq({ 1, 10 }, cursor())
feed('<Tab>')
eq({ 2, 2 }, cursor())
end)
it('syncs text of tabstops with equal indexes', function()
test_success({ 'var double = ${1:x} + ${1:x}' }, { 'var double = x + x' })
feed('123')
eq({ 'var double = 123 + 123' }, helpers.buf_lines(0))
end)
it('cancels session with changes outside the snippet', function()
test_success({ 'print($1)' }, { 'print()' })
feed('<Esc>O-- A comment')
eq(false, exec_lua('return vim.snippet.active()'))
eq({ '-- A comment', 'print()' }, helpers.buf_lines(0))
end)
it('handles non-consecutive tabstops', function()
test_success({ 'class $1($3) {', ' $0', '}' }, { 'class () {', ' ', '}' })
feed('Foo') -- First tabstop
feed('<Tab><Tab>') -- Jump to $0
feed('// Inside') -- Insert text
eq({ 'class Foo() {', ' // Inside', '}' }, helpers.buf_lines(0))
end)
it('handles multiline placeholders', function()
test_success(
{ 'public void foo() {', ' ${0:// TODO Auto-generated', ' throw;}', '}' },
{ 'public void foo() {', ' // TODO Auto-generated', ' throw;', '}' }
)
end)
it('inserts placeholder in all tabstops when the first tabstop has the placeholder', function()
test_success(
{ 'for (${1:int} ${2:x} = ${3:0}; $2 < ${4:N}; $2++) {', ' $0', '}' },
{ 'for (int x = 0; x < N; x++) {', ' ', '}' }
)
end)
it('inserts placeholder in all tabstops when a later tabstop has the placeholder', function()
test_success(
{ 'for (${1:int} $2 = ${3:0}; ${2:x} < ${4:N}; $2++) {', ' $0', '}' },
{ 'for (int x = 0; x < N; x++) {', ' ', '}' }
)
end)
it('errors with multiple placeholders for the same index', function()
test_fail('class ${1:Foo} { void ${1:foo}() {} }', 'multiple placeholders for tabstop $1')
end)
it('errors with multiple $0 tabstops', function()
test_fail('function $1() { $0 }$0', 'multiple $0 tabstops')
end)
it('cancels session when deleting the snippet', function()
test_success({ 'local function $1()', ' $0', 'end' }, { 'local function ()', ' ', 'end' })
feed('<esc>Vjjd')
eq(false, exec_lua('return vim.snippet.active()'))
end)
end)
|
