Added checks and tests for iat/jti/sub

include/jwt/exceptions.hpp

@@ -194,6 +194,54 @@ public:
   }
 };
 
+/**
+ * Derived from VerificationError.
+ * Thrown when the subject claim does not match
+ * with the one provided as part of decode argument.
+ */
+class InvalidSubjectError final: public VerificationError
+{
+public:
+  /**
+   */
+  InvalidSubjectError(std::string msg)
+    : VerificationError(std::move(msg))
+  {
+  }
+};
+
+/**
+ * Derived from VerificationError.
+ * Thrown when verify_iat parameter is passed to
+ * decode and IAT is not present.
+ */
+class InvalidIATError final: public VerificationError
+{
+public:
+  /**
+   */
+  InvalidIATError(std::string msg)
+    : VerificationError(std::move(msg))
+  {
+  }
+};
+
+/**
+ * Derived from VerificationError.
+ * Thrown when validate_jti is asked for
+ * in decode and jti claim is not present.
+ */
+class InvalidJTIError final: public VerificationError
+{
+public:
+  /**
+   */
+  InvalidJTIError(std::string msg)
+    : VerificationError(std::move(msg))
+  {
+  }
+};
+
 /**
  * Derived from VerificationError.
  * Thrown when the token is decoded at a time before
@@ -225,6 +273,22 @@ public:
   }
 };
 
+/**
+ * Derived from VerificationError.
+ * Thrown when there type expectation mismatch
+ * while verifying the values of registered claim names.
+ */
+class TypeConversionError final: public VerificationError
+{
+public:
+  /**
+   */
+  TypeConversionError(std::string msg)
+    : VerificationError(std::move(msg))
+  {
+  }
+};
+
 } // END namespace jwt
 
 #endif