diff options
Diffstat (limited to 'spec/outputs/test/existential_spec.lua')
| -rw-r--r-- | spec/outputs/test/existential_spec.lua | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/spec/outputs/test/existential_spec.lua b/spec/outputs/test/existential_spec.lua new file mode 100644 index 0000000..9485c34 --- /dev/null +++ b/spec/outputs/test/existential_spec.lua | |||
| @@ -0,0 +1,244 @@ | |||
| 1 | local _anon_func_0 = function(obj) | ||
| 2 | if obj ~= nil then | ||
| 3 | return obj.value | ||
| 4 | end | ||
| 5 | return nil | ||
| 6 | end | ||
| 7 | local _anon_func_1 = function(obj) | ||
| 8 | if obj ~= nil then | ||
| 9 | return obj.value | ||
| 10 | end | ||
| 11 | return nil | ||
| 12 | end | ||
| 13 | local _anon_func_2 = function(obj) | ||
| 14 | if obj ~= nil then | ||
| 15 | return obj.x | ||
| 16 | end | ||
| 17 | return nil | ||
| 18 | end | ||
| 19 | local _anon_func_3 = function(obj) | ||
| 20 | if obj ~= nil then | ||
| 21 | return obj.y | ||
| 22 | end | ||
| 23 | return nil | ||
| 24 | end | ||
| 25 | return describe("existential", function() | ||
| 26 | it("should handle ?. with existing object", function() | ||
| 27 | local obj = { | ||
| 28 | value = 42 | ||
| 29 | } | ||
| 30 | local result | ||
| 31 | if obj ~= nil then | ||
| 32 | result = obj.value | ||
| 33 | end | ||
| 34 | return assert.same(result, 42) | ||
| 35 | end) | ||
| 36 | it("should handle ?. with nil object", function() | ||
| 37 | local obj = nil | ||
| 38 | local result | ||
| 39 | if obj ~= nil then | ||
| 40 | result = obj.value | ||
| 41 | end | ||
| 42 | return assert.same(result, nil) | ||
| 43 | end) | ||
| 44 | it("should chain ?. calls", function() | ||
| 45 | local obj = { | ||
| 46 | nested = { | ||
| 47 | value = 100 | ||
| 48 | } | ||
| 49 | } | ||
| 50 | local result | ||
| 51 | if obj ~= nil then | ||
| 52 | do | ||
| 53 | local _obj_0 = obj.nested | ||
| 54 | if _obj_0 ~= nil then | ||
| 55 | result = _obj_0.value | ||
| 56 | end | ||
| 57 | end | ||
| 58 | end | ||
| 59 | return assert.same(result, 100) | ||
| 60 | end) | ||
| 61 | it("should return nil in chain with nil", function() | ||
| 62 | local obj = nil | ||
| 63 | local result | ||
| 64 | if obj ~= nil then | ||
| 65 | do | ||
| 66 | local _obj_0 = obj.nested | ||
| 67 | if _obj_0 ~= nil then | ||
| 68 | result = _obj_0.value | ||
| 69 | end | ||
| 70 | end | ||
| 71 | end | ||
| 72 | return assert.same(result, nil) | ||
| 73 | end) | ||
| 74 | it("should handle ?. with method call", function() | ||
| 75 | local obj = { | ||
| 76 | func = function() | ||
| 77 | return "result" | ||
| 78 | end | ||
| 79 | } | ||
| 80 | local result | ||
| 81 | if obj ~= nil then | ||
| 82 | result = obj.func() | ||
| 83 | end | ||
| 84 | return assert.same(result, "result") | ||
| 85 | end) | ||
| 86 | it("should handle ? on table index", function() | ||
| 87 | local tb = { | ||
| 88 | [1] = "first" | ||
| 89 | } | ||
| 90 | local result | ||
| 91 | if tb ~= nil then | ||
| 92 | result = tb[1] | ||
| 93 | end | ||
| 94 | return assert.same(result, "first") | ||
| 95 | end) | ||
| 96 | it("should return nil for missing index", function() | ||
| 97 | local tb = { } | ||
| 98 | local result | ||
| 99 | if tb ~= nil then | ||
| 100 | result = tb[99] | ||
| 101 | end | ||
| 102 | return assert.same(result, nil) | ||
| 103 | end) | ||
| 104 | it("should work with ? in if condition", function() | ||
| 105 | local obj = { | ||
| 106 | value = 5 | ||
| 107 | } | ||
| 108 | local result | ||
| 109 | if _anon_func_0(obj) then | ||
| 110 | result = "exists" | ||
| 111 | end | ||
| 112 | return assert.same(result, "exists") | ||
| 113 | end) | ||
| 114 | it("should combine ?. with and/or", function() | ||
| 115 | local obj = { | ||
| 116 | value = 10 | ||
| 117 | } | ||
| 118 | local result = _anon_func_1(obj) and 20 or 30 | ||
| 119 | return assert.same(result, 20) | ||
| 120 | end) | ||
| 121 | it("should handle with? safely", function() | ||
| 122 | local obj = { | ||
| 123 | x = 1, | ||
| 124 | y = 2 | ||
| 125 | } | ||
| 126 | local sum = _anon_func_2(obj) + _anon_func_3(obj) | ||
| 127 | return assert.same(sum, 3) | ||
| 128 | end) | ||
| 129 | it("should return nil with with? on nil", function() | ||
| 130 | local obj = nil | ||
| 131 | local result | ||
| 132 | if obj ~= nil then | ||
| 133 | result = obj.x | ||
| 134 | end | ||
| 135 | return assert.same(result, nil) | ||
| 136 | end) | ||
| 137 | it("should handle false value correctly", function() | ||
| 138 | local obj = { | ||
| 139 | value = false | ||
| 140 | } | ||
| 141 | local result | ||
| 142 | if obj ~= nil then | ||
| 143 | result = obj.value | ||
| 144 | end | ||
| 145 | return assert.same(result, false) | ||
| 146 | end) | ||
| 147 | it("should handle 0 value correctly", function() | ||
| 148 | local obj = { | ||
| 149 | value = 0 | ||
| 150 | } | ||
| 151 | local result | ||
| 152 | if obj ~= nil then | ||
| 153 | result = obj.value | ||
| 154 | end | ||
| 155 | return assert.same(result, 0) | ||
| 156 | end) | ||
| 157 | it("should handle empty string correctly", function() | ||
| 158 | local obj = { | ||
| 159 | value = "" | ||
| 160 | } | ||
| 161 | local result | ||
| 162 | if obj ~= nil then | ||
| 163 | result = obj.value | ||
| 164 | end | ||
| 165 | return assert.same(result, "") | ||
| 166 | end) | ||
| 167 | it("should handle empty table correctly", function() | ||
| 168 | local obj = { | ||
| 169 | value = { } | ||
| 170 | } | ||
| 171 | local result | ||
| 172 | if obj ~= nil then | ||
| 173 | result = obj.value | ||
| 174 | end | ||
| 175 | return assert.same(type(result), "table") | ||
| 176 | end) | ||
| 177 | it("should work with deep chains", function() | ||
| 178 | local obj = { | ||
| 179 | a = { | ||
| 180 | b = { | ||
| 181 | c = { | ||
| 182 | d = "deep" | ||
| 183 | } | ||
| 184 | } | ||
| 185 | } | ||
| 186 | } | ||
| 187 | local result | ||
| 188 | if obj ~= nil then | ||
| 189 | do | ||
| 190 | local _obj_0 = obj.a | ||
| 191 | if _obj_0 ~= nil then | ||
| 192 | do | ||
| 193 | local _obj_1 = _obj_0.b | ||
| 194 | if _obj_1 ~= nil then | ||
| 195 | do | ||
| 196 | local _obj_2 = _obj_1.c | ||
| 197 | if _obj_2 ~= nil then | ||
| 198 | result = _obj_2.d | ||
| 199 | end | ||
| 200 | end | ||
| 201 | end | ||
| 202 | end | ||
| 203 | end | ||
| 204 | end | ||
| 205 | end | ||
| 206 | return assert.same(result, "deep") | ||
| 207 | end) | ||
| 208 | it("should break chain on first nil", function() | ||
| 209 | local obj = { | ||
| 210 | a = nil | ||
| 211 | } | ||
| 212 | local result | ||
| 213 | if obj ~= nil then | ||
| 214 | do | ||
| 215 | local _obj_0 = obj.a | ||
| 216 | if _obj_0 ~= nil then | ||
| 217 | do | ||
| 218 | local _obj_1 = _obj_0.b | ||
| 219 | if _obj_1 ~= nil then | ||
| 220 | result = _obj_1.c | ||
| 221 | end | ||
| 222 | end | ||
| 223 | end | ||
| 224 | end | ||
| 225 | end | ||
| 226 | return assert.same(result, nil) | ||
| 227 | end) | ||
| 228 | it("should handle ?. with string methods", function() | ||
| 229 | local s = "hello" | ||
| 230 | local result | ||
| 231 | if s ~= nil then | ||
| 232 | result = s:upper() | ||
| 233 | end | ||
| 234 | return assert.same(result, "HELLO") | ||
| 235 | end) | ||
| 236 | return it("should handle ?. with nil string", function() | ||
| 237 | local s = nil | ||
| 238 | local result | ||
| 239 | if s ~= nil then | ||
| 240 | result = s:upper() | ||
| 241 | end | ||
| 242 | return assert.same(result, nil) | ||
| 243 | end) | ||
| 244 | end) | ||