test: add basic cctest for base64.h

This commit adds C++ tests for `base64_encode()` and `base64_decode()`
functions defined in `base64.h`.  The functionality is already being
tested indirectly in JavaScript tests for Buffer, but it won't hurt to
test the low-level functions too, especially given that they aren't only
used in the internal Buffer implementation, Chrome inspector protocol
support relies upon them too.

Refs: nodejs#12146 (comment)

node.gyp

@@ -641,6 +641,7 @@
  ],
 
  'sources': [
+ 'test/cctest/test_base64.cc',
  'test/cctest/test_util.cc',
  'test/cctest/test_url.cc'
  ],

test/cctest/test_base64.cc

@@ -0,0 +1,127 @@
+#include "base64.h"
+
+#include <stddef.h>
+#include <string.h>
+
+#include "gtest/gtest.h"
+
+using node::base64_encode;
+using node::base64_decode;
+
+TEST(Base64Test, Encode) {
+ auto test = [](const char* string, const char* base64_string) {
+ const size_t len = strlen(base64_string);
+ char* buffer = new char[len + 1];
+ buffer[len] = 0;
+ base64_encode(string, strlen(string), buffer, len);
+ EXPECT_STREQ(base64_string, buffer);
+ delete[] buffer;
+ };
+
+ test("a", "YQ==");
+ test("ab", "YWI=");
+ test("abc", "YWJj");
+ test("abcd", "YWJjZA==");
+ test("abcde", "YWJjZGU=");
+ test("abcdef", "YWJjZGVm");
+
+ test("Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do "
+ "eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut "
+ "enim ad minim veniam, quis nostrud exercitation ullamco laboris "
+ "nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in "
+ "reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla "
+ "pariatur. Excepteur sint occaecat cupidatat non proident, sunt in "
+ "culpa qui officia deserunt mollit anim id est laborum.",
+
+ "TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg"
+ "ZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0"
+ "IGRvbG9yZSBtYWduYSBhbGlxdWEuIFV0IGVuaW0gYWQgbWluaW0gdmVuaWFtLCBxdWlz"
+ "IG5vc3RydWQgZXhlcmNpdGF0aW9uIHVsbGFtY28gbGFib3JpcyBuaXNpIHV0IGFsaXF1"
+ "aXAgZXggZWEgY29tbW9kbyBjb25zZXF1YXQuIER1aXMgYXV0ZSBpcnVyZSBkb2xvciBp"
+ "biByZXByZWhlbmRlcml0IGluIHZvbHVwdGF0ZSB2ZWxpdCBlc3NlIGNpbGx1bSBkb2xv"
+ "cmUgZXUgZnVnaWF0IG51bGxhIHBhcmlhdHVyLiBFeGNlcHRldXIgc2ludCBvY2NhZWNh"
+ "dCBjdXBpZGF0YXQgbm9uIHByb2lkZW50LCBzdW50IGluIGN1bHBhIHF1aSBvZmZpY2lh"
+ "IGRlc2VydW50IG1vbGxpdCBhbmltIGlkIGVzdCBsYWJvcnVtLg==");
+}
+
+TEST(Base64Test, Decode) {
+ auto test = [](const char* base64_string, const char* string) {
+ const size_t len = strlen(string);
+ char* buffer = new char[len + 1];
+ buffer[len] = 0;
+ base64_decode(buffer, len, base64_string, strlen(base64_string));
+ EXPECT_STREQ(string, buffer);
+ delete[] buffer;
+ };
+
+ test("YQ", "a");
+ test("Y Q", "a");
+ test("Y Q ", "a");
+ test(" Y Q", "a");
+ test("Y Q==", "a");
+ test("YQ ==", "a");
+ test("YQ == junk", "a");
+ test("YWI", "ab");
+ test("YWI=", "ab");
+ test("YWJj", "abc");
+ test("YWJjZA", "abcd");
+ test("YWJjZA==", "abcd");
+ test("YW Jj ZA ==", "abcd");
+ test("YWJjZGU=", "abcde");
+ test("YWJjZGVm", "abcdef");
+ test("Y WJjZGVm", "abcdef");
+ test("YW JjZGVm", "abcdef");
+ test("YWJ jZGVm", "abcdef");
+ test("YWJj ZGVm", "abcdef");
+ test("Y W J j Z G V m", "abcdef");
+ test("Y W\n JjZ \nG Vm", "abcdef");
+
+ const char* text =
+ "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do "
+ "eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut "
+ "enim ad minim veniam, quis nostrud exercitation ullamco laboris "
+ "nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in "
+ "reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla "
+ "pariatur. Excepteur sint occaecat cupidatat non proident, sunt in "
+ "culpa qui officia deserunt mollit anim id est laborum.";
+
+ test("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg"
+ "ZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0"
+ "IGRvbG9yZSBtYWduYSBhbGlxdWEuIFV0IGVuaW0gYWQgbWluaW0gdmVuaWFtLCBxdWlz"
+ "IG5vc3RydWQgZXhlcmNpdGF0aW9uIHVsbGFtY28gbGFib3JpcyBuaXNpIHV0IGFsaXF1"
+ "aXAgZXggZWEgY29tbW9kbyBjb25zZXF1YXQuIER1aXMgYXV0ZSBpcnVyZSBkb2xvciBp"
+ "biByZXByZWhlbmRlcml0IGluIHZvbHVwdGF0ZSB2ZWxpdCBlc3NlIGNpbGx1bSBkb2xv"
+ "cmUgZXUgZnVnaWF0IG51bGxhIHBhcmlhdHVyLiBFeGNlcHRldXIgc2ludCBvY2NhZWNh"
+ "dCBjdXBpZGF0YXQgbm9uIHByb2lkZW50LCBzdW50IGluIGN1bHBhIHF1aSBvZmZpY2lh"
+ "IGRlc2VydW50IG1vbGxpdCBhbmltIGlkIGVzdCBsYWJvcnVtLg==", text);
+
+ test("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg"
+ "ZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0"
+ "IGRvbG9yZSBtYWduYSBhbGlxdWEuIFV0IGVuaW0gYWQgbWluaW0gdmVuaWFtLCBxdWlz"
+ "IG5vc3RydWQgZXhlcmNpdGF0aW9uIHVsbGFtY28gbGFib3JpcyBuaXNpIHV0IGFsaXF1"
+ "aXAgZXggZWEgY29tbW9kbyBjb25zZXF1YXQuIER1aXMgYXV0ZSBpcnVyZSBkb2xvciBp"
+ "biByZXByZWhlbmRlcml0IGluIHZvbHVwdGF0ZSB2ZWxpdCBlc3NlIGNpbGx1bSBkb2xv"
+ "cmUgZXUgZnVnaWF0IG51bGxhIHBhcmlhdHVyLiBFeGNlcHRldXIgc2ludCBvY2NhZWNh"
+ "dCBjdXBpZGF0YXQgbm9uIHByb2lkZW50LCBzdW50IGluIGN1bHBhIHF1aSBvZmZpY2lh"
+ "IGRlc2VydW50IG1vbGxpdCBhbmltIGlkIGVzdCBsYWJvcnVtLg", text);
+
+ test("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg\n"
+ "ZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0\n"
+ "IGRvbG9yZSBtYWduYSBhbGlxdWEuIFV0IGVuaW0gYWQgbWluaW0gdmVuaWFtLCBxdWlz\n"
+ "IG5vc3RydWQgZXhlcmNpdGF0aW9uIHVsbGFtY28gbGFib3JpcyBuaXNpIHV0IGFsaXF1\n"
+ "aXAgZXggZWEgY29tbW9kbyBjb25zZXF1YXQuIER1aXMgYXV0ZSBpcnVyZSBkb2xvciBp\n"
+ "biByZXByZWhlbmRlcml0IGluIHZvbHVwdGF0ZSB2ZWxpdCBlc3NlIGNpbGx1bSBkb2xv\n"
+ "cmUgZXUgZnVnaWF0IG51bGxhIHBhcmlhdHVyLiBFeGNlcHRldXIgc2ludCBvY2NhZWNh\n"
+ "dCBjdXBpZGF0YXQgbm9uIHByb2lkZW50LCBzdW50IGluIGN1bHBhIHF1aSBvZmZpY2lh\n"
+ "IGRlc2VydW50IG1vbGxpdCBhbmltIGlkIGVzdCBsYWJvcnVtLg==", text);
+
+ test("TG9yZW0gaXBzdW0gZG9sb3Igc2l0IGFtZXQsIGNvbnNlY3RldHVyIGFkaXBpc2Npbmcg\n"
+ "ZWxpdCwgc2VkIGRvIGVpdXNtb2QgdGVtcG9yIGluY2lkaWR1bnQgdXQgbGFib3JlIGV0\n"
+ "IGRvbG9yZSBtYWduYSBhbGlxdWEuIFV0IGVuaW0gYWQgbWluaW0gdmVuaWFtLCBxdWlz\n"
+ "IG5vc3RydWQgZXhlcmNpdGF0aW9uIHVsbGFtY28gbGFib3JpcyBuaXNpIHV0IGFsaXF1\n"
+ "aXAgZXggZWEgY29tbW9kbyBjb25zZXF1YXQuIER1aXMgYXV0ZSBpcnVyZSBkb2xvciBp\n"
+ "biByZXByZWhlbmRlcml0IGluIHZvbHVwdGF0ZSB2ZWxpdCBlc3NlIGNpbGx1bSBkb2xv\n"
+ "cmUgZXUgZnVnaWF0IG51bGxhIHBhcmlhdHVyLiBFeGNlcHRldXIgc2ludCBvY2NhZWNh\n"
+ "dCBjdXBpZGF0YXQgbm9uIHByb2lkZW50LCBzdW50IGluIGN1bHBhIHF1aSBvZmZpY2lh\n"
+ "IGRlc2VydW50IG1vbGxpdCBhbmltIGlkIGVzdCBsYWJvcnVtLg", text);
+}