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-rw-r--r--core/fxcrt/fx_string_unittest.cpp47
1 files changed, 47 insertions, 0 deletions
diff --git a/core/fxcrt/fx_string_unittest.cpp b/core/fxcrt/fx_string_unittest.cpp
index 3059de3e5c..60e7f07523 100644
--- a/core/fxcrt/fx_string_unittest.cpp
+++ b/core/fxcrt/fx_string_unittest.cpp
@@ -2,9 +2,56 @@
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
+#include <limits>
+
#include "core/fxcrt/fx_string.h"
#include "testing/gtest/include/gtest/gtest.h"
+TEST(fxstring, FX_atonum) {
+ int i;
+ EXPECT_TRUE(FX_atonum("10", &i));
+ EXPECT_EQ(10, i);
+
+ EXPECT_TRUE(FX_atonum("-10", &i));
+ EXPECT_EQ(-10, i);
+
+ EXPECT_TRUE(FX_atonum("+10", &i));
+ EXPECT_EQ(10, i);
+
+ EXPECT_TRUE(FX_atonum("-2147483648", &i));
+ EXPECT_EQ(std::numeric_limits<int>::min(), i);
+
+ EXPECT_TRUE(FX_atonum("2147483647", &i));
+ EXPECT_EQ(2147483647, i);
+
+ // Value overflows.
+ EXPECT_TRUE(FX_atonum("-2147483649", &i));
+ EXPECT_EQ(0, i);
+
+ // Value overflows.
+ EXPECT_TRUE(FX_atonum("+2147483648", &i));
+ EXPECT_EQ(0, i);
+
+ // Value overflows.
+ EXPECT_TRUE(FX_atonum("4223423494965252", &i));
+ EXPECT_EQ(0, i);
+
+ // No explicit sign will allow the number to go negative. This is for things
+ // like the encryption Permissions flag (Table 3.20 PDF 1.7 spec)
+ EXPECT_TRUE(FX_atonum("4294965252", &i));
+ EXPECT_EQ(-2044, i);
+
+ EXPECT_TRUE(FX_atonum("-4294965252", &i));
+ EXPECT_EQ(0, i);
+
+ EXPECT_TRUE(FX_atonum("+4294965252", &i));
+ EXPECT_EQ(0, i);
+
+ float f;
+ EXPECT_FALSE(FX_atonum("3.24", &f));
+ EXPECT_FLOAT_EQ(3.24f, f);
+}
+
TEST(fxstring, FX_UTF8Encode) {
EXPECT_EQ("", FX_UTF8Encode(WideStringView()));
EXPECT_EQ(