1 // Copyright 2016 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include <limits>
6
7 #include "core/fxcrt/fx_string.h"
8 #include "testing/gtest/include/gtest/gtest.h"
9
TEST(fxstring,FX_atonum)10 TEST(fxstring, FX_atonum) {
11 int i;
12 EXPECT_TRUE(FX_atonum("10", &i));
13 EXPECT_EQ(10, i);
14
15 EXPECT_TRUE(FX_atonum("-10", &i));
16 EXPECT_EQ(-10, i);
17
18 EXPECT_TRUE(FX_atonum("+10", &i));
19 EXPECT_EQ(10, i);
20
21 EXPECT_TRUE(FX_atonum("-2147483648", &i));
22 EXPECT_EQ(std::numeric_limits<int>::min(), i);
23
24 EXPECT_TRUE(FX_atonum("2147483647", &i));
25 EXPECT_EQ(2147483647, i);
26
27 // Value overflows.
28 EXPECT_TRUE(FX_atonum("-2147483649", &i));
29 EXPECT_EQ(0, i);
30
31 // Value overflows.
32 EXPECT_TRUE(FX_atonum("+2147483648", &i));
33 EXPECT_EQ(0, i);
34
35 // Value overflows.
36 EXPECT_TRUE(FX_atonum("4223423494965252", &i));
37 EXPECT_EQ(0, i);
38
39 // No explicit sign will allow the number to go negative. This is for things
40 // like the encryption Permissions flag (Table 3.20 PDF 1.7 spec)
41 EXPECT_TRUE(FX_atonum("4294965252", &i));
42 EXPECT_EQ(-2044, i);
43
44 EXPECT_TRUE(FX_atonum("-4294965252", &i));
45 EXPECT_EQ(0, i);
46
47 EXPECT_TRUE(FX_atonum("+4294965252", &i));
48 EXPECT_EQ(0, i);
49
50 float f;
51 EXPECT_FALSE(FX_atonum("3.24", &f));
52 EXPECT_FLOAT_EQ(3.24f, f);
53 }
54