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
|
#include "BLI_optional.h"
#include "testing/testing.h"
#include <string>
using namespace BLI;
TEST(optional, DefaultConstructor)
{
Optional<int> a;
EXPECT_FALSE(a.has_value());
}
TEST(optional, ValueConstructor)
{
Optional<int> a(5);
EXPECT_TRUE(a.has_value());
EXPECT_EQ(a.value(), 5);
}
TEST(optional, CopyConstructor)
{
Optional<std::string> a("Hello");
Optional<std::string> b = a;
EXPECT_TRUE(a.has_value());
EXPECT_TRUE(b.has_value());
b.value()[0] = 'T';
EXPECT_EQ(a.value(), "Hello");
EXPECT_EQ(b.value(), "Tello");
}
TEST(optional, Reset)
{
Optional<int> a(4);
EXPECT_TRUE(a.has_value());
a.reset();
EXPECT_FALSE(a.has_value());
}
TEST(optional, FromNullPointer)
{
Optional<int> a = Optional<int>::FromPointer(nullptr);
EXPECT_FALSE(a.has_value());
}
TEST(optional, FromNonNullPointer)
{
int value = 42;
Optional<int> a = Optional<int>::FromPointer(&value);
EXPECT_TRUE(a.has_value());
EXPECT_EQ(a.value(), 42);
}
TEST(optional, Extract)
{
Optional<int> a(32);
EXPECT_TRUE(a.has_value());
EXPECT_EQ(a.extract(), 32);
EXPECT_FALSE(a.has_value());
}
TEST(optional, ArrowOperator)
{
Optional<std::string> value = std::string("Hello");
EXPECT_TRUE(value.has_value());
EXPECT_EQ(value->size(), 5);
}
TEST(optional, StarOperator)
{
Optional<std::string> value = std::string("Hello");
EXPECT_TRUE(value.has_value());
std::string &s = *value;
EXPECT_EQ(s.size(), 5);
}
|
