math_test.go (8264B)
1 // Copyright 2017 The Hugo Authors. All rights reserved.
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 // http://www.apache.org/licenses/LICENSE-2.0
7 //
8 // Unless required by applicable law or agreed to in writing, software
9 // distributed under the License is distributed on an "AS IS" BASIS,
10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
11 // See the License for the specific language governing permissions and
12 // limitations under the License.
13
14 package math
15
16 import (
17 "math"
18 "testing"
19
20 qt "github.com/frankban/quicktest"
21 )
22
23 func TestBasicNSArithmetic(t *testing.T) {
24 t.Parallel()
25 c := qt.New(t)
26
27 ns := New()
28
29 for _, test := range []struct {
30 fn func(a, b any) (any, error)
31 a any
32 b any
33 expect any
34 }{
35 {ns.Add, 4, 2, int64(6)},
36 {ns.Add, 1.0, "foo", false},
37 {ns.Sub, 4, 2, int64(2)},
38 {ns.Sub, 1.0, "foo", false},
39 {ns.Mul, 4, 2, int64(8)},
40 {ns.Mul, 1.0, "foo", false},
41 {ns.Div, 4, 2, int64(2)},
42 {ns.Div, 1.0, "foo", false},
43 } {
44
45 result, err := test.fn(test.a, test.b)
46
47 if b, ok := test.expect.(bool); ok && !b {
48 c.Assert(err, qt.Not(qt.IsNil))
49 continue
50 }
51
52 c.Assert(err, qt.IsNil)
53 c.Assert(result, qt.Equals, test.expect)
54 }
55 }
56
57 func TestCeil(t *testing.T) {
58 t.Parallel()
59 c := qt.New(t)
60 ns := New()
61
62 for _, test := range []struct {
63 x any
64 expect any
65 }{
66 {0.1, 1.0},
67 {0.5, 1.0},
68 {1.1, 2.0},
69 {1.5, 2.0},
70 {-0.1, 0.0},
71 {-0.5, 0.0},
72 {-1.1, -1.0},
73 {-1.5, -1.0},
74 {"abc", false},
75 } {
76
77 result, err := ns.Ceil(test.x)
78
79 if b, ok := test.expect.(bool); ok && !b {
80 c.Assert(err, qt.Not(qt.IsNil))
81 continue
82 }
83
84 c.Assert(err, qt.IsNil)
85 c.Assert(result, qt.Equals, test.expect)
86 }
87 }
88
89 func TestFloor(t *testing.T) {
90 t.Parallel()
91 c := qt.New(t)
92
93 ns := New()
94
95 for _, test := range []struct {
96 x any
97 expect any
98 }{
99 {0.1, 0.0},
100 {0.5, 0.0},
101 {1.1, 1.0},
102 {1.5, 1.0},
103 {-0.1, -1.0},
104 {-0.5, -1.0},
105 {-1.1, -2.0},
106 {-1.5, -2.0},
107 {"abc", false},
108 } {
109
110 result, err := ns.Floor(test.x)
111
112 if b, ok := test.expect.(bool); ok && !b {
113 c.Assert(err, qt.Not(qt.IsNil))
114 continue
115 }
116
117 c.Assert(err, qt.IsNil)
118 c.Assert(result, qt.Equals, test.expect)
119 }
120 }
121
122 func TestLog(t *testing.T) {
123 t.Parallel()
124 c := qt.New(t)
125
126 ns := New()
127
128 for _, test := range []struct {
129 a any
130 expect any
131 }{
132 {1, float64(0)},
133 {3, float64(1.0986)},
134 {0, float64(math.Inf(-1))},
135 {1.0, float64(0)},
136 {3.1, float64(1.1314)},
137 {"abc", false},
138 } {
139
140 result, err := ns.Log(test.a)
141
142 if b, ok := test.expect.(bool); ok && !b {
143 c.Assert(err, qt.Not(qt.IsNil))
144 continue
145 }
146
147 // we compare only 4 digits behind point if its a real float
148 // otherwise we usually get different float values on the last positions
149 if result != math.Inf(-1) {
150 result = float64(int(result*10000)) / 10000
151 }
152
153 c.Assert(err, qt.IsNil)
154 c.Assert(result, qt.Equals, test.expect)
155 }
156
157 // Separate test for Log(-1) -- returns NaN
158 result, err := ns.Log(-1)
159 c.Assert(err, qt.IsNil)
160 c.Assert(result, qt.Satisfies, math.IsNaN)
161 }
162
163 func TestSqrt(t *testing.T) {
164 t.Parallel()
165 c := qt.New(t)
166
167 ns := New()
168
169 for _, test := range []struct {
170 a any
171 expect any
172 }{
173 {81, float64(9)},
174 {0.25, float64(0.5)},
175 {0, float64(0)},
176 {"abc", false},
177 } {
178
179 result, err := ns.Sqrt(test.a)
180
181 if b, ok := test.expect.(bool); ok && !b {
182 c.Assert(err, qt.Not(qt.IsNil))
183 continue
184 }
185
186 // we compare only 4 digits behind point if its a real float
187 // otherwise we usually get different float values on the last positions
188 if result != math.Inf(-1) {
189 result = float64(int(result*10000)) / 10000
190 }
191
192 c.Assert(err, qt.IsNil)
193 c.Assert(result, qt.Equals, test.expect)
194 }
195
196 // Separate test for Sqrt(-1) -- returns NaN
197 result, err := ns.Sqrt(-1)
198 c.Assert(err, qt.IsNil)
199 c.Assert(result, qt.Satisfies, math.IsNaN)
200 }
201
202 func TestMod(t *testing.T) {
203 t.Parallel()
204 c := qt.New(t)
205
206 ns := New()
207
208 for _, test := range []struct {
209 a any
210 b any
211 expect any
212 }{
213 {3, 2, int64(1)},
214 {3, 1, int64(0)},
215 {3, 0, false},
216 {0, 3, int64(0)},
217 {3.1, 2, int64(1)},
218 {3, 2.1, int64(1)},
219 {3.1, 2.1, int64(1)},
220 {int8(3), int8(2), int64(1)},
221 {int16(3), int16(2), int64(1)},
222 {int32(3), int32(2), int64(1)},
223 {int64(3), int64(2), int64(1)},
224 {"3", "2", int64(1)},
225 {"3.1", "2", false},
226 {"aaa", "0", false},
227 {"3", "aaa", false},
228 } {
229
230 result, err := ns.Mod(test.a, test.b)
231
232 if b, ok := test.expect.(bool); ok && !b {
233 c.Assert(err, qt.Not(qt.IsNil))
234 continue
235 }
236
237 c.Assert(err, qt.IsNil)
238 c.Assert(result, qt.Equals, test.expect)
239 }
240 }
241
242 func TestModBool(t *testing.T) {
243 t.Parallel()
244 c := qt.New(t)
245
246 ns := New()
247
248 for _, test := range []struct {
249 a any
250 b any
251 expect any
252 }{
253 {3, 3, true},
254 {3, 2, false},
255 {3, 1, true},
256 {3, 0, nil},
257 {0, 3, true},
258 {3.1, 2, false},
259 {3, 2.1, false},
260 {3.1, 2.1, false},
261 {int8(3), int8(3), true},
262 {int8(3), int8(2), false},
263 {int16(3), int16(3), true},
264 {int16(3), int16(2), false},
265 {int32(3), int32(3), true},
266 {int32(3), int32(2), false},
267 {int64(3), int64(3), true},
268 {int64(3), int64(2), false},
269 {"3", "3", true},
270 {"3", "2", false},
271 {"3.1", "2", nil},
272 {"aaa", "0", nil},
273 {"3", "aaa", nil},
274 } {
275
276 result, err := ns.ModBool(test.a, test.b)
277
278 if test.expect == nil {
279 c.Assert(err, qt.Not(qt.IsNil))
280 continue
281 }
282
283 c.Assert(err, qt.IsNil)
284 c.Assert(result, qt.Equals, test.expect)
285 }
286 }
287
288 func TestRound(t *testing.T) {
289 t.Parallel()
290 c := qt.New(t)
291
292 ns := New()
293
294 for _, test := range []struct {
295 x any
296 expect any
297 }{
298 {0.1, 0.0},
299 {0.5, 1.0},
300 {1.1, 1.0},
301 {1.5, 2.0},
302 {-0.1, -0.0},
303 {-0.5, -1.0},
304 {-1.1, -1.0},
305 {-1.5, -2.0},
306 {"abc", false},
307 } {
308
309 result, err := ns.Round(test.x)
310
311 if b, ok := test.expect.(bool); ok && !b {
312 c.Assert(err, qt.Not(qt.IsNil))
313 continue
314 }
315
316 c.Assert(err, qt.IsNil)
317 c.Assert(result, qt.Equals, test.expect)
318 }
319 }
320
321 func TestPow(t *testing.T) {
322 t.Parallel()
323 c := qt.New(t)
324
325 ns := New()
326
327 for _, test := range []struct {
328 a any
329 b any
330 expect any
331 }{
332 {0, 0, float64(1)},
333 {2, 0, float64(1)},
334 {2, 3, float64(8)},
335 {-2, 3, float64(-8)},
336 {2, -3, float64(0.125)},
337 {-2, -3, float64(-0.125)},
338 {0.2, 3, float64(0.008)},
339 {2, 0.3, float64(1.2311)},
340 {0.2, 0.3, float64(0.617)},
341 {"aaa", "3", false},
342 {"2", "aaa", false},
343 } {
344
345 result, err := ns.Pow(test.a, test.b)
346
347 if b, ok := test.expect.(bool); ok && !b {
348 c.Assert(err, qt.Not(qt.IsNil))
349 continue
350 }
351
352 // we compare only 4 digits behind point if its a real float
353 // otherwise we usually get different float values on the last positions
354 result = float64(int(result*10000)) / 10000
355
356 c.Assert(err, qt.IsNil)
357 c.Assert(result, qt.Equals, test.expect)
358 }
359 }
360
361 func TestMax(t *testing.T) {
362 t.Parallel()
363 c := qt.New(t)
364
365 ns := New()
366
367 for _, test := range []struct {
368 a any
369 b any
370 expect any
371 }{
372 {-1, -1, float64(-1)},
373 {-1, 0, float64(0)},
374 {-1, 1, float64(1)},
375 {0, -1, float64(0)},
376 {0, 0, float64(0)},
377 {0, 1, float64(1)},
378 {1, -1, float64(1)},
379 {1, 0, float64(1)},
380 {1, 1, float64(1)},
381 {1.2, 1.23, float64(1.23)},
382 {-1.2, -1.23, float64(-1.2)},
383 {0, "a", false},
384 {"a", 0, false},
385 {"a", "b", false},
386 } {
387
388 result, err := ns.Max(test.a, test.b)
389
390 if b, ok := test.expect.(bool); ok && !b {
391 c.Assert(err, qt.Not(qt.IsNil))
392 continue
393 }
394
395 c.Assert(err, qt.IsNil)
396 c.Assert(result, qt.Equals, test.expect)
397 }
398 }
399
400 func TestMin(t *testing.T) {
401 t.Parallel()
402 c := qt.New(t)
403
404 ns := New()
405
406 for _, test := range []struct {
407 a any
408 b any
409 expect any
410 }{
411 {-1, -1, float64(-1)},
412 {-1, 0, float64(-1)},
413 {-1, 1, float64(-1)},
414 {0, -1, float64(-1)},
415 {0, 0, float64(0)},
416 {0, 1, float64(0)},
417 {1, -1, float64(-1)},
418 {1, 0, float64(0)},
419 {1, 1, float64(1)},
420 {1.2, 1.23, float64(1.2)},
421 {-1.2, -1.23, float64(-1.23)},
422 {0, "a", false},
423 {"a", 0, false},
424 {"a", "b", false},
425 } {
426
427 result, err := ns.Min(test.a, test.b)
428
429 if b, ok := test.expect.(bool); ok && !b {
430 c.Assert(err, qt.Not(qt.IsNil))
431 continue
432 }
433
434 c.Assert(err, qt.IsNil)
435 c.Assert(result, qt.Equals, test.expect)
436 }
437 }