1 files changed, 111 insertions, 0 deletions
diff --git a/test/libyul/Inliner.cpp b/test/libyul/Inliner.cpp
new file mode 100644
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+++ b/test/libyul/Inliner.cpp
@@ -0,0 +1,111 @@
+/*
+	This file is part of solidity.
+
+	solidity is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	solidity is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @date 2017
+ * Unit tests for the Yul function inliner.
+ */
+
+#include <test/libyul/Common.h>
+
+#include <libyul/optimiser/ExpressionInliner.h>
+#include <libyul/optimiser/InlinableExpressionFunctionFinder.h>
+#include <libyul/optimiser/FullInliner.h>
+#include <libyul/optimiser/FunctionHoister.h>
+#include <libyul/optimiser/FunctionGrouper.h>
+
+#include <libsolidity/inlineasm/AsmPrinter.h>
+
+#include <boost/test/unit_test.hpp>
+
+#include <boost/range/adaptors.hpp>
+#include <boost/algorithm/string/join.hpp>
+
+using namespace std;
+using namespace dev;
+using namespace dev::yul;
+using namespace dev::yul::test;
+using namespace dev::solidity;
+
+namespace
+{
+string inlinableFunctions(string const& _source)
+{
+	auto ast = disambiguate(_source);
+
+	InlinableExpressionFunctionFinder funFinder;
+	funFinder(ast);
+
+	return boost::algorithm::join(
+		funFinder.inlinableFunctions() | boost::adaptors::map_keys,
+		","
+	);
+}
+
+}
+
+
+BOOST_AUTO_TEST_SUITE(YulInlinableFunctionFilter)
+
+BOOST_AUTO_TEST_CASE(smoke_test)
+{
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ }"), "");
+}
+
+BOOST_AUTO_TEST_CASE(simple)
+{
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f() -> x:u256 { x := 2:u256 } }"), "f");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{"
+		"function g(a:u256) -> b:u256 { b := a }"
+		"function f() -> x:u256 { x := g(2:u256) }"
+	"}"), "f,g");
+}
+
+BOOST_AUTO_TEST_CASE(simple_inside_structures)
+{
+	BOOST_CHECK_EQUAL(inlinableFunctions("{"
+		"switch 2:u256 "
+		"case 2:u256 {"
+			"function g(a:u256) -> b:u256 { b := a }"
+			"function f() -> x:u256 { x := g(2:u256) }"
+		"}"
+	"}"), "f,g");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{"
+		"for {"
+			"function g(a:u256) -> b:u256 { b := a }"
+		"} 1:u256 {"
+			"function f() -> x:u256 { x := g(2:u256) }"
+		"}"
+		"{"
+			"function h() -> y:u256 { y := 2:u256 }"
+		"}"
+	"}"), "f,g,h");
+}
+
+BOOST_AUTO_TEST_CASE(negative)
+{
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f() -> x:u256 { } }"), "");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f() -> x:u256 { x := 2:u256 {} } }"), "");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f() -> x:u256 { x := f() } }"), "");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f() -> x:u256 { x := x } }"), "");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f() -> x:u256, y:u256 { x := 2:u256 } }"), "");
+  BOOST_CHECK_EQUAL(inlinableFunctions(
+    "{ function g() -> x:u256, y:u256 {} function f(y:u256) -> x:u256 { x,y := g() } }"), "");
+	BOOST_CHECK_EQUAL(inlinableFunctions("{ function f(y:u256) -> x:u256 { y := 2:u256 } }"), "");
+}
+
+
+BOOST_AUTO_TEST_SUITE_END()