| 1 | # spec/oil-expr-compare |
| 2 | |
| 3 | #### Exact equality with === and !== |
| 4 | shopt -s oil:all |
| 5 | |
| 6 | if (3 === 3) { |
| 7 | echo 'ok' |
| 8 | } |
| 9 | if (3 === '3') { |
| 10 | echo 'FAIL' |
| 11 | } |
| 12 | |
| 13 | if (3 !== 3) { |
| 14 | echo 'FAIL' |
| 15 | } |
| 16 | if (3 !== '3') { |
| 17 | echo 'ok' |
| 18 | } |
| 19 | |
| 20 | ## STDOUT: |
| 21 | ok |
| 22 | ok |
| 23 | ## END |
| 24 | |
| 25 | #### Approximate equality of Str x {Str, Int, Bool} with ~== |
| 26 | shopt -s oil:all |
| 27 | |
| 28 | # Note: for now there's no !~== operator. Use: not (a ~== b) |
| 29 | |
| 30 | if (' foo ' ~== 'foo') { |
| 31 | echo Str-Str |
| 32 | } |
| 33 | if (' BAD ' ~== 'foo') { |
| 34 | echo FAIL |
| 35 | } |
| 36 | |
| 37 | if ('3 ' ~== 3) { |
| 38 | echo Str-Int |
| 39 | } |
| 40 | if ('4 ' ~== '3') { |
| 41 | echo FAIL |
| 42 | } |
| 43 | |
| 44 | if (' true ' ~== true) { |
| 45 | echo Str-Bool |
| 46 | } |
| 47 | if (' true ' ~== false) { |
| 48 | echo FAIL |
| 49 | } |
| 50 | |
| 51 | const matrix = [ |
| 52 | ' TRue ' ~== true, # case insentiive |
| 53 | ' FALse ' ~== false, |
| 54 | |
| 55 | # Note this is the opposite of exit codes :-( |
| 56 | # Maybe we should encourage 'if try' instead of 'if' |
| 57 | ' 1 ' ~== true, |
| 58 | ' 0 ' ~== false, |
| 59 | ] |
| 60 | |
| 61 | # = matrix |
| 62 | if (matrix === [true, true, true, true]) { |
| 63 | echo 'bool matrix' |
| 64 | } |
| 65 | |
| 66 | ## STDOUT: |
| 67 | Str-Str |
| 68 | Str-Int |
| 69 | Str-Bool |
| 70 | bool matrix |
| 71 | ## END |
| 72 | |
| 73 | #### Wrong Types with ~== |
| 74 | shopt -s oil:all |
| 75 | |
| 76 | # The LHS side should be a string |
| 77 | |
| 78 | echo one |
| 79 | if (['1'] ~== ['1']) { |
| 80 | echo bad |
| 81 | } |
| 82 | echo two |
| 83 | |
| 84 | if (3 ~== 3) { |
| 85 | echo bad |
| 86 | } |
| 87 | |
| 88 | ## status: 1 |
| 89 | ## STDOUT: |
| 90 | one |
| 91 | ## END |
| 92 | |
| 93 | |
| 94 | #### Equality of ~== with Float (deferred) |
| 95 | shopt -s oil:all |
| 96 | |
| 97 | if (42 ~== 42.0) { |
| 98 | echo int-float |
| 99 | } |
| 100 | if (42 ~== 43.0) { |
| 101 | echo FAIL |
| 102 | } |
| 103 | |
| 104 | if ('42' ~== 42.0) { |
| 105 | echo str-float |
| 106 | } |
| 107 | if ('42' ~== 43.0) { |
| 108 | echo FAIL |
| 109 | } |
| 110 | |
| 111 | if (42 ~== '42.0') { |
| 112 | echo int-str-float |
| 113 | } |
| 114 | if (42 ~== '43.0') { |
| 115 | echo FAIL |
| 116 | } |
| 117 | ## STDOUT: |
| 118 | ## END |
| 119 | |
| 120 | |
| 121 | #### Comparison of Int |
| 122 | shopt -s oil:upgrade |
| 123 | |
| 124 | if (1 < 2) { |
| 125 | echo '<' |
| 126 | } |
| 127 | if (2 <= 2) { |
| 128 | echo '<=' |
| 129 | } |
| 130 | if (5 > 4) { |
| 131 | echo '>' |
| 132 | } |
| 133 | if (5 >= 5) { |
| 134 | echo '>=' |
| 135 | } |
| 136 | |
| 137 | if (2 < 1) { |
| 138 | echo no |
| 139 | } |
| 140 | |
| 141 | ## STDOUT: |
| 142 | < |
| 143 | <= |
| 144 | > |
| 145 | >= |
| 146 | ## END |
| 147 | |
| 148 | #### Comparison of Str does conversion to Int |
| 149 | shopt -s oil:upgrade |
| 150 | |
| 151 | if ('2' < '11') { |
| 152 | echo '<' |
| 153 | } |
| 154 | if ('2' <= '2') { |
| 155 | echo '<=' |
| 156 | } |
| 157 | if ('11' > '2') { |
| 158 | echo '>' |
| 159 | } |
| 160 | if ('5' >= '5') { |
| 161 | echo '>=' |
| 162 | } |
| 163 | |
| 164 | if ('2' < '1') { |
| 165 | echo no |
| 166 | } |
| 167 | |
| 168 | ## STDOUT: |
| 169 | < |
| 170 | <= |
| 171 | > |
| 172 | >= |
| 173 | ## END |
| 174 | |
| 175 | |
| 176 | #### Mixed Type Comparison does conversion to Int |
| 177 | shopt -s oil:upgrade |
| 178 | |
| 179 | if (2 < '11') { |
| 180 | echo '<' |
| 181 | } |
| 182 | if (2 <= '2') { |
| 183 | echo '<=' |
| 184 | } |
| 185 | if (11 > '2') { |
| 186 | echo '>' |
| 187 | } |
| 188 | if (5 >= '5') { |
| 189 | echo '>=' |
| 190 | } |
| 191 | |
| 192 | if (2 < '1') { |
| 193 | echo no |
| 194 | } |
| 195 | |
| 196 | ## STDOUT: |
| 197 | < |
| 198 | <= |
| 199 | > |
| 200 | >= |
| 201 | ## END |
| 202 | |
| 203 | |
| 204 | #### Invalid String is an error |
| 205 | shopt -s oil:upgrade |
| 206 | |
| 207 | if ('3' < 'bar') { |
| 208 | echo no |
| 209 | } |
| 210 | echo 'should not get here' |
| 211 | |
| 212 | ## status: 3 |
| 213 | ## STDOUT: |
| 214 | ## END |
| 215 | |
| 216 | |
| 217 | #### Bool conversion -- explicit allowed, implicit not allowed |
| 218 | |
| 219 | shopt -s oil:upgrade |
| 220 | |
| 221 | if (Int(false) < Int(true)) { |
| 222 | echo '<' |
| 223 | } |
| 224 | |
| 225 | if (Int(false) <= Int(false) ) { |
| 226 | echo '<=' |
| 227 | } |
| 228 | |
| 229 | # JavaScript and Python both have this, but Oil prefers being explicit |
| 230 | |
| 231 | if (true < false) { |
| 232 | echo 'BAD' |
| 233 | } |
| 234 | echo 'should not get here' |
| 235 | |
| 236 | ## status: 3 |
| 237 | ## STDOUT: |
| 238 | < |
| 239 | <= |
| 240 | ## END |
| 241 | |
| 242 | |
| 243 | #### Chained Comparisons |
| 244 | shopt -s oil:upgrade |
| 245 | if (1 < 2 < 3) { |
| 246 | echo '123' |
| 247 | } |
| 248 | if (1 < 2 <= 2 <= 3 < 4) { |
| 249 | echo '123' |
| 250 | } |
| 251 | |
| 252 | if (1 < 2 < 2) { |
| 253 | echo '123' |
| 254 | } else { |
| 255 | echo 'no' |
| 256 | } |
| 257 | ## STDOUT: |
| 258 | 123 |
| 259 | 123 |
| 260 | no |
| 261 | ## END |
| 262 | |
| 263 | #### Tuple comparison is not allowed |
| 264 | |
| 265 | # TODO: |
| 266 | # - tuples aren't hashable, so I think they shouldn't be comparable |
| 267 | # - and probably should just be removed from the language. JS doesn't have |
| 268 | # them |
| 269 | # - I think records and destructuring would be better |
| 270 | |
| 271 | shopt -s oil:upgrade |
| 272 | |
| 273 | var t1 = 3, 0 |
| 274 | var t2 = 4, 0 |
| 275 | var t3 = 3, 1 |
| 276 | |
| 277 | if (t2 > t1) { echo yes1 } |
| 278 | if (t3 > t1) { echo yes2 } |
| 279 | if ( (0,0) > t1) { echo yes3 } |
| 280 | |
| 281 | # NOTE: ((0,0) causes problems -- it looks like a shell statement! |
| 282 | #if ( (0,0) > t1) { echo yes3 } |
| 283 | ## STDOUT: |
| 284 | yes1 |
| 285 | yes2 |
| 286 | ## END |