Add ability to make StringCs from std::vector<>s.

Pre-cursor to using more std::vector<uint8_t> as byte buffers.

The widestring test case is more complicated, where we're not sure
of having any particular uint*_t type to match wchar_t.

Change-Id: Ic27980f16cdbc61fac7c11f39a85eea58d19bacb
Reviewed-on: https://pdfium-review.googlesource.com/4153
Reviewed-by: dsinclair <dsinclair@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 14 insertions, 0 deletions

diff --git a/core/fxcrt/cfx_widestring_unittest.cpp b/core/fxcrt/cfx_widestring_unittest.cpp
index dd44cb70af..498b4f0b6a 100644
--- a/core/fxcrt/cfx_widestring_unittest.cpp
+++ b/core/fxcrt/cfx_widestring_unittest.cpp
@@ -4,6 +4,8 @@
 
 #include "core/fxcrt/cfx_widestring.h"
 
+#include <vector>
+
 #include "testing/fx_string_testhelpers.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -689,6 +691,18 @@ TEST(fxcrt, WideStringUTF16LE_Encode) {
   }
 }
 
+TEST(fxcrt, WideStringCFromVector) {
+  std::vector<CFX_WideStringC::UnsignedType> null_vec;
+  CFX_WideStringC null_string(null_vec);
+  EXPECT_EQ(0, null_string.GetLength());
+
+  std::vector<CFX_WideStringC::UnsignedType> lower_a_vec(
+      10, static_cast<CFX_WideStringC::UnsignedType>(L'a'));
+  CFX_WideStringC lower_a_string(lower_a_vec);
+  EXPECT_EQ(10, lower_a_string.GetLength());
+  EXPECT_EQ(L"aaaaaaaaaa", lower_a_string);
+}
+
 TEST(fxcrt, WideStringCOperatorSubscript) {
   // CFX_WideStringC includes the NUL terminator for non-empty strings.
   CFX_WideStringC abc(L"abc");