From 36e5b5102a36aed554628b90909b055ab409ed1b Mon Sep 17 00:00:00 2001
From: Lefteris Karapetsas <lefteris@refu.co>
Date: Wed, 7 Jan 2015 02:07:34 +0100
Subject: [PATCH] Test for the Canonical Signature of a function

---
 SolidityNameAndTypeResolution.cpp | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/SolidityNameAndTypeResolution.cpp b/SolidityNameAndTypeResolution.cpp
index 25bff71f7..e44c9fa29 100644
--- a/SolidityNameAndTypeResolution.cpp
+++ b/SolidityNameAndTypeResolution.cpp
@@ -38,7 +38,7 @@ namespace test
 
 namespace
 {
-void parseTextAndResolveNames(std::string const& _source)
+ASTPointer<SourceUnit> parseTextAndResolveNames(std::string const& _source)
 {
 	Parser parser;
 	ASTPointer<SourceUnit> sourceUnit = parser.parse(std::make_shared<Scanner>(CharStream(_source)));
@@ -50,6 +50,8 @@ void parseTextAndResolveNames(std::string const& _source)
 	for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
 		if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
 			resolver.checkTypeRequirements(*contract);
+
+	return sourceUnit;
 }
 }
 
@@ -321,6 +323,23 @@ BOOST_AUTO_TEST_CASE(comparison_bitop_precedence)
 	BOOST_CHECK_NO_THROW(parseTextAndResolveNames(text));
 }
 
+BOOST_AUTO_TEST_CASE(function_canonical_signature)
+{
+	ASTPointer<SourceUnit> sourceUnit;
+	char const* text = "contract Test {\n"
+					   "  function foo(uint256 arg1, uint64 arg2, bool arg3) returns (uint256 ret) {\n"
+					   "    ret = arg1 + arg2;\n"
+					   "  }\n"
+					   "}\n";
+	BOOST_CHECK_NO_THROW(sourceUnit = parseTextAndResolveNames(text));
+	for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
+		if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
+		{
+			auto functions = contract->getDefinedFunctions();
+			BOOST_ASSERT("foo(uint256,uint64,bool)" == functions[0]->getCanonicalSignature());
+		}
+}
+
 BOOST_AUTO_TEST_SUITE_END()
 
 }