29
29
require_once($CFG->libdir . '/mathslib.php');
32
class mathsslib_testcase extends basic_testcase {
32
class core_mathslib_testcase extends basic_testcase {
35
* Tests the basic formula evaluation
35
* Tests the basic formula evaluation.
37
37
public function test__basic() {
38
38
$formula = new calc_formula('=1+2');
39
39
$res = $formula->evaluate();
40
$this->assertEquals($res, 3, '3+1 is: %s');
40
$this->assertSame($res, 3, '3+1 is: %s');
44
* Tests the formula params
44
* Tests the formula params.
46
46
public function test__params() {
47
47
$formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30));
48
48
$res = $formula->evaluate();
49
$this->assertEquals($res, 60, '10+20+30 is: %s');
49
$this->assertSame(60, $res, '10+20+30 is: %s');
53
* Tests the changed params
53
* Tests the changed params.
55
55
public function test__changing_params() {
56
56
$formula = new calc_formula('=a+b+c', array('a'=>10, 'b'=>20, 'c'=>30));
57
57
$res = $formula->evaluate();
58
$this->assertEquals($res, 60, '10+20+30 is: %s');
58
$this->assertSame(60, $res, '10+20+30 is: %s');
59
59
$formula->set_params(array('a'=>1, 'b'=>2, 'c'=>3));
60
60
$res = $formula->evaluate();
61
$this->assertEquals($res, 6, 'changed params 1+2+3 is: %s');
61
$this->assertSame(6, $res, 'changed params 1+2+3 is: %s');
65
* Tests the spreadsheet emulation function in formula
65
* Tests the spreadsheet emulation function in formula.
67
67
public function test__calc_function() {
68
68
$formula = new calc_formula('=sum(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
69
69
$res = $formula->evaluate();
70
$this->assertEquals($res, 60, 'sum(a, b, c) is: %s');
70
$this->assertSame(60, $res, 'sum(a, b, c) is: %s');
73
73
public function test_other_functions() {
74
74
$formula = new calc_formula('=average(1,2,3)');
75
$this->assertEquals($formula->evaluate(), 2);
75
$this->assertSame(2, $formula->evaluate());
77
77
$formula = new calc_formula('=mod(10,3)');
78
$this->assertEquals($formula->evaluate(), 1);
78
$this->assertSame(1, $formula->evaluate());
80
80
$formula = new calc_formula('=power(2,3)');
81
$this->assertEquals($formula->evaluate(), 8);
81
$this->assertSame(8, $formula->evaluate());
85
* Tests the min and max functions
85
* Tests the min and max functions.
87
87
public function test__minmax_function() {
88
88
$formula = new calc_formula('=min(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
89
89
$res = $formula->evaluate();
90
$this->assertEquals($res, 10, 'minimum is: %s');
90
$this->assertSame(10, $res, 'minimum is: %s');
91
91
$formula = new calc_formula('=max(a, b, c)', array('a'=>10, 'b'=>20, 'c'=>30));
92
92
$res = $formula->evaluate();
93
$this->assertEquals($res, 30, 'maximum is: %s');
93
$this->assertSame(30, $res, 'maximum is: %s');
97
* Tests special chars.
99
99
public function test__specialchars() {
100
100
$formula = new calc_formula('=gi1 + gi2 + gi11', array('gi1'=>10, 'gi2'=>20, 'gi11'=>30));
101
101
$res = $formula->evaluate();
102
$this->assertEquals($res, 60, 'sum is: %s');
102
$this->assertSame(60, $res, 'sum is: %s');
106
* Tests some slightly more complex expressions
106
* Tests some slightly more complex expressions.
108
108
public function test__more_complex_expressions() {
109
109
$formula = new calc_formula('=pi() + a', array('a'=>10));
110
110
$res = $formula->evaluate();
111
$this->assertEquals($res, pi()+10);
111
$this->assertSame(pi()+10, $res);
112
112
$formula = new calc_formula('=pi()^a', array('a'=>10));
113
113
$res = $formula->evaluate();
114
$this->assertEquals($res, pow(pi(), 10));
114
$this->assertSame(pow(pi(), 10), $res);
115
115
$formula = new calc_formula('=-8*(5/2)^2*(1-sqrt(4))-8');
116
116
$res = $formula->evaluate();
117
$this->assertEquals($res, -8*pow((5/2), 2)*(1-sqrt(4))-8);
117
$this->assertSame(-8*pow((5/2), 2)*(1-sqrt(4))-8, $res);
121
* Tests some slightly more complex expressions
121
* Tests some slightly more complex expressions.
123
123
public function test__error_handling() {
124
124
$formula = new calc_formula('=pi( + a', array('a'=>10));
125
125
$res = $formula->evaluate();
126
$this->assertEquals($res, false);
127
$this->assertEquals($formula->get_error(),
128
get_string('unexpectedoperator', 'mathslib', '+'));
126
$this->assertFalse($res);
127
$this->assertSame(get_string('unexpectedoperator', 'mathslib', '+'), $formula->get_error());
130
129
$formula = new calc_formula('=pi(');
131
130
$res = $formula->evaluate();
132
$this->assertEquals($res, false);
133
$this->assertEquals($formula->get_error(),
134
get_string('expectingaclosingbracket', 'mathslib'));
131
$this->assertSame($res, false);
132
$this->assertSame(get_string('expectingaclosingbracket', 'mathslib'), $formula->get_error());
136
134
$formula = new calc_formula('=pi()^');
137
135
$res = $formula->evaluate();
138
$this->assertEquals($res, false);
139
$this->assertEquals($formula->get_error(),
140
get_string('operatorlacksoperand', 'mathslib', '^'));
136
$this->assertSame($res, false);
137
$this->assertSame(get_string('operatorlacksoperand', 'mathslib', '^'), $formula->get_error());
144
141
public function test_rounding_function() {
145
// Rounding to the default number of decimal places
142
// Rounding to the default number of decimal places.
148
145
$formula = new calc_formula('=round(2.5)');
149
$this->assertEquals($formula->evaluate(), 3);
146
$this->assertSame(3.0, $formula->evaluate());
151
148
$formula = new calc_formula('=round(1.5)');
152
$this->assertEquals($formula->evaluate(), 2);
149
$this->assertSame(2.0, $formula->evaluate());
154
151
$formula = new calc_formula('=round(-1.49)');
155
$this->assertEquals($formula->evaluate(), -1);
152
$this->assertSame(-1.0, $formula->evaluate());
157
154
$formula = new calc_formula('=round(-2.49)');
158
$this->assertEquals($formula->evaluate(), -2);
155
$this->assertSame(-2.0, $formula->evaluate());
160
157
$formula = new calc_formula('=round(-1.5)');
161
$this->assertEquals($formula->evaluate(), -2);
158
$this->assertSame(-2.0, $formula->evaluate());
163
160
$formula = new calc_formula('=round(-2.5)');
164
$this->assertEquals($formula->evaluate(), -3);
161
$this->assertSame(-3.0, $formula->evaluate());
166
163
$formula = new calc_formula('=ceil(2.5)');
167
$this->assertEquals($formula->evaluate(), 3);
164
$this->assertSame(3.0, $formula->evaluate());
169
166
$formula = new calc_formula('=ceil(1.5)');
170
$this->assertEquals($formula->evaluate(), 2);
167
$this->assertSame(2.0, $formula->evaluate());
172
169
$formula = new calc_formula('=ceil(-1.49)');
173
$this->assertEquals($formula->evaluate(), -1);
170
$this->assertSame(-1.0, $formula->evaluate());
175
172
$formula = new calc_formula('=ceil(-2.49)');
176
$this->assertEquals($formula->evaluate(), -2);
173
$this->assertSame(-2.0, $formula->evaluate());
178
175
$formula = new calc_formula('=ceil(-1.5)');
179
$this->assertEquals($formula->evaluate(), -1);
176
$this->assertSame(-1.0, $formula->evaluate());
181
178
$formula = new calc_formula('=ceil(-2.5)');
182
$this->assertEquals($formula->evaluate(), -2);
179
$this->assertSame(-2.0, $formula->evaluate());
184
181
$formula = new calc_formula('=floor(2.5)');
185
$this->assertEquals($formula->evaluate(), 2);
182
$this->assertSame(2.0, $formula->evaluate());
187
184
$formula = new calc_formula('=floor(1.5)');
188
$this->assertEquals($formula->evaluate(), 1);
185
$this->assertSame(1.0, $formula->evaluate());
190
187
$formula = new calc_formula('=floor(-1.49)');
191
$this->assertEquals($formula->evaluate(), -2);
188
$this->assertSame(-2.0, $formula->evaluate());
193
190
$formula = new calc_formula('=floor(-2.49)');
194
$this->assertEquals($formula->evaluate(), -3);
191
$this->assertSame(-3.0, $formula->evaluate());
196
193
$formula = new calc_formula('=floor(-1.5)');
197
$this->assertEquals($formula->evaluate(), -2);
194
$this->assertSame(-2.0, $formula->evaluate());
199
196
$formula = new calc_formula('=floor(-2.5)');
200
$this->assertEquals($formula->evaluate(), -3);
197
$this->assertSame(-3.0, $formula->evaluate());
202
// Rounding to an explicit number of decimal places
199
// Rounding to an explicit number of decimal places.
204
201
$formula = new calc_formula('=round(2.5, 1)');
205
$this->assertEquals($formula->evaluate(), 2.5);
202
$this->assertSame(2.5, $formula->evaluate());
207
204
$formula = new calc_formula('=round(2.5, 0)');
208
$this->assertEquals($formula->evaluate(), 3);
205
$this->assertSame(3.0, $formula->evaluate());
210
207
$formula = new calc_formula('=round(1.2345, 2)');
211
$this->assertEquals($formula->evaluate(), 1.23);
208
$this->assertSame(1.23, $formula->evaluate());
213
210
$formula = new calc_formula('=round(123.456, -1)');
214
$this->assertEquals($formula->evaluate(), 120);
211
$this->assertSame(120.0, $formula->evaluate());
217
214
public function test_scientific_notation() {
218
215
$formula = new calc_formula('=10e10');
219
$this->assertEquals($formula->evaluate(), 1e11, '', 1e11*1e-15);
216
$this->assertEquals(1e11, $formula->evaluate(), '', 1e11*1e-15);
221
218
$formula = new calc_formula('=10e-10');
222
$this->assertEquals($formula->evaluate(), 1e-9, '', 1e11*1e-15);
219
$this->assertEquals(1e-9, $formula->evaluate(), '', 1e11*1e-15);
224
221
$formula = new calc_formula('=10e+10');
225
$this->assertEquals($formula->evaluate(), 1e11, '', 1e11*1e-15);
222
$this->assertEquals(1e11, $formula->evaluate(), '', 1e11*1e-15);
227
224
$formula = new calc_formula('=10e10*5');
228
$this->assertEquals($formula->evaluate(), 5e11, '', 1e11*1e-15);
225
$this->assertEquals(5e11, $formula->evaluate(), '', 1e11*1e-15);
230
227
$formula = new calc_formula('=10e10^2');
231
$this->assertEquals($formula->evaluate(), 1e22, '', 1e22*1e-15);
228
$this->assertEquals(1e22, $formula->evaluate(), '', 1e22*1e-15);
235
231
public function test_rand_float() {