Merge pull request #26 from PANFACTORY/feature/#25

Feature/#25

Author: PANFACTORY

src/lexer.h

@@ -72,7 +72,7 @@ namespace JsonParser {
                     ch = ss.get();
                 }
                 str = str.substr(0, str.find_last_not_of(" \f\t\v\r\n") + 1);
-                if (!std::regex_match(str, std::regex("-?(0|[1-9]\\d*)(\\.\\d+)?(e[-+](0|[1-9]\\d*)(\\.\\d+)?)?"))) {
+                if (!std::regex_match(str, std::regex("-?(0|[1-9]\\d*)(\\.\\d+)?(e[-+]?(0|[1-9]\\d*)(\\.\\d+)?)?"))) {
                     throw std::runtime_error("At LexicalAnalyzer(): \"str\" is not a number.");
                 }
                 chs.push_back(str);

test/lexer_test.cpp

@@ -63,6 +63,12 @@ TEST(JsonParserTest, LexicalHappyTest10) {
     ASSERT_EQ(JsonParser::Lexer(ss).size(), 5);
 }
 
+TEST(JsonParserTest, LexicalHappyTest11) {
+    std::stringstream ss;
+    ss << R"({ "number": 1e4 })";
+    ASSERT_EQ(JsonParser::Lexer(ss).size(), 5);
+}
+
 // Unhappy path testing
 TEST(JsonParserTest, LexicalUnhappyTest1) {
     std::stringstream ss;