Merge pull request #5185 from ethereum/yulOptimizerTests

Yul optimizer tests

16 files changed, 425 insertions, 107 deletions

diff --git a/test/boostTest.cpp b/test/boostTest.cpp
index d9e939eb..cbbf586f 100644
--- a/test/boostTest.cpp
+++ b/test/boostTest.cpp
@@ -38,6 +38,7 @@
 #include <test/Options.h>
 #include <test/libsolidity/ASTJSONTest.h>
 #include <test/libsolidity/SyntaxTest.h>
+#include <test/libjulia/YulOptimizerTest.h>
 
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/predicate.hpp>
@@ -138,6 +139,12 @@ test_suite* init_unit_test_suite( int /*argc*/, char* /*argv*/[] )
 		"ASTJSON",
 		ASTJSONTest::create
 	) > 0, "no JSON AST tests found");
+	solAssert(registerTests(
+		master,
+		dev::test::Options::get().testPath / "libjulia",
+		"yulOptimizerTests",
+		dev::julia::test::YulOptimizerTest::create
+	) > 0, "no Yul Optimizer tests found");
 	if (dev::test::Options::get().disableIPC)
 	{
 		for (auto suite: {
diff --git a/test/libjulia/Disambiguator.cpp b/test/libjulia/Disambiguator.cpp
deleted file mode 100644
index 48e02c7e..00000000
--- a/test/libjulia/Disambiguator.cpp
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
-    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 name disambiguator.
- */
-
-#include <test/libjulia/Common.h>
-
-#include <libsolidity/inlineasm/AsmPrinter.h>
-
-#include <boost/test/unit_test.hpp>
-
-using namespace std;
-using namespace dev::julia::test;
-using namespace dev::solidity;
-
-#define CHECK(_original, _expectation)\
-do\
-{\
-	assembly::AsmPrinter p(true);\
-	string result = p(disambiguate(_original));\
-	BOOST_CHECK_EQUAL(result, format(_expectation));\
-	BOOST_CHECK_EQUAL(result, p(disambiguate(result)));\
-}\
-while(false)
-
-BOOST_AUTO_TEST_SUITE(YulDisambiguator)
-
-BOOST_AUTO_TEST_CASE(smoke_test)
-{
-	CHECK("{ }", "{ }");
-}
-
-BOOST_AUTO_TEST_CASE(variables)
-{
-	CHECK(
-		"{ { let a:u256 } { let a:u256 } }",
-		"{ { let a:u256 } { let a_1:u256 } }"
-	);
-}
-
-BOOST_AUTO_TEST_CASE(variables_clash)
-{
-	CHECK(
-		"{ { let a:u256 let a_1:u256 } { let a:u256 } }",
-		"{ { let a:u256 let a_1:u256 } { let a_2:u256 } }"
-	);
-}
-
-BOOST_AUTO_TEST_CASE(variables_inside_functions)
-{
-	CHECK(
-		"{ { let c:u256 let b:u256 } function f(a:u256, c:u256) -> b:u256 { let x:u256 } { let a:u256 let x:u256 } }",
-		"{ { let c:u256 let b:u256 } function f(a:u256, c_1:u256) -> b_1:u256 { let x:u256 } { let a_1:u256 let x_1:u256 } }"
-	);
-}
-
-BOOST_AUTO_TEST_CASE(function_call)
-{
-	CHECK(
-		"{ { let a:u256, b:u256, c:u256, d:u256, f:u256 } { function f(a:u256) -> c:u256, d:u256 { let b:u256, c_1:u256 := f(a) } } }",
-		"{ { let a:u256, b:u256, c:u256, d:u256, f:u256 } { function f_1(a_1:u256) -> c_1:u256, d_1:u256 { let b_1:u256, c_1_1:u256 := f_1(a_1) } } }"
-	);
-}
-
-BOOST_AUTO_TEST_CASE(for_statement)
-{
-	CHECK(
-		"{ { let a:u256, b:u256 } { for { let a:u256 } a { a := a } { let b:u256 := a } } }",
-		"{ { let a:u256, b:u256 } { for { let a_1:u256 } a_1 { a_1 := a_1 } { let b_1:u256 := a_1 } } }"
-	);
-}
-
-BOOST_AUTO_TEST_CASE(switch_statement)
-{
-	CHECK(
-		"{ { let a:u256, b:u256, c:u256 } { let a:u256 switch a case 0:u256 { let b:u256 := a } default { let c:u256 := a } } }",
-		"{ { let a:u256, b:u256, c:u256 } { let a_1:u256 switch a_1 case 0:u256 { let b_1:u256 := a_1 } default { let c_1:u256 := a_1 } } }"
-	);
-}
-
-BOOST_AUTO_TEST_CASE(if_statement)
-{
-	CHECK(
-		"{ { let a:u256, b:u256, c:u256 } { let a:bool if a { let b:bool := a } } }",
-		"{ { let a:u256, b:u256, c:u256 } { let a_1:bool if a_1 { let b_1:bool := a_1 } } }"
-	);
-}
-
-BOOST_AUTO_TEST_SUITE_END()
diff --git a/test/libjulia/YulOptimizerTest.cpp b/test/libjulia/YulOptimizerTest.cpp
new file mode 100644
index 00000000..fd15623c
--- /dev/null
+++ b/test/libjulia/YulOptimizerTest.cpp
@@ -0,0 +1,167 @@
+/*
+	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/>.
+*/
+
+#include <test/libjulia/YulOptimizerTest.h>
+
+#include <test/libsolidity/FormattedScope.h>
+
+#include <test/Options.h>
+
+#include <libjulia/optimiser/Disambiguator.h>
+#include <libsolidity/parsing/Scanner.h>
+#include <libsolidity/inlineasm/AsmPrinter.h>
+#include <libsolidity/inlineasm/AsmParser.h>
+#include <libsolidity/inlineasm/AsmAnalysis.h>
+#include <libsolidity/interface/SourceReferenceFormatter.h>
+#include <libsolidity/interface/ErrorReporter.h>
+
+#include <boost/test/unit_test.hpp>
+#include <boost/algorithm/string.hpp>
+
+#include <fstream>
+
+using namespace dev;
+using namespace dev::julia;
+using namespace dev::julia::test;
+using namespace dev::solidity;
+using namespace dev::solidity::test;
+using namespace std;
+
+YulOptimizerTest::YulOptimizerTest(string const& _filename)
+{
+	boost::filesystem::path path(_filename);
+
+	if (path.empty() || std::next(path.begin()) == path.end() || std::next(std::next(path.begin())) == path.end())
+		BOOST_THROW_EXCEPTION(runtime_error("Filename path has to contain a directory: \"" + _filename + "\"."));
+	m_optimizerStep = std::prev(std::prev(path.end()))->string();
+
+	ifstream file(_filename);
+	if (!file)
+		BOOST_THROW_EXCEPTION(runtime_error("Cannot open test case: \"" + _filename + "\"."));
+	file.exceptions(ios::badbit);
+
+	string line;
+	while (getline(file, line))
+	{
+		if (boost::algorithm::starts_with(line, "// ----"))
+			break;
+		if (m_source.empty() && boost::algorithm::starts_with(line, "// yul"))
+			m_yul = true;
+		m_source += line + "\n";
+	}
+	while (getline(file, line))
+		if (boost::algorithm::starts_with(line, "// "))
+			m_expectation += line.substr(3) + "\n";
+		else
+			m_expectation += line + "\n";
+}
+
+bool YulOptimizerTest::run(ostream& _stream, string const& _linePrefix, bool const _formatted)
+{
+	assembly::AsmPrinter printer{m_yul};
+	shared_ptr<Block> ast;
+	shared_ptr<assembly::AsmAnalysisInfo> analysisInfo;
+	if (!parse(_stream, _linePrefix, _formatted))
+		return false;
+
+	if (m_optimizerStep == "disambiguator")
+		disambiguate();
+	else
+	{
+		FormattedScope(_stream, _formatted, {formatting::BOLD, formatting::RED}) << _linePrefix << "Invalid optimizer step: " << m_optimizerStep << endl;
+		return false;
+	}
+
+	m_obtainedResult = m_optimizerStep + "\n" + printer(*m_ast) + "\n";
+
+	if (m_expectation != m_obtainedResult)
+	{
+		string nextIndentLevel = _linePrefix + "  ";
+		FormattedScope(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) << _linePrefix << "Expected result:" << endl;
+		// TODO could compute a simple diff with highlighted lines
+		printIndented(_stream, m_expectation, nextIndentLevel);
+		FormattedScope(_stream, _formatted, {formatting::BOLD, formatting::CYAN}) << _linePrefix << "Obtained result:" << endl;
+		printIndented(_stream, m_obtainedResult, nextIndentLevel);
+		return false;
+	}
+	return true;
+}
+
+void YulOptimizerTest::printSource(ostream& _stream, string const& _linePrefix, bool const) const
+{
+	printIndented(_stream, m_source, _linePrefix);
+}
+
+void YulOptimizerTest::printUpdatedExpectations(ostream& _stream, string const& _linePrefix) const
+{
+	printIndented(_stream, m_obtainedResult, _linePrefix);
+}
+
+void YulOptimizerTest::printIndented(ostream& _stream, string const& _output, string const& _linePrefix) const
+{
+	stringstream output(_output);
+	string line;
+	while (getline(output, line))
+		_stream << _linePrefix << line << endl;
+}
+
+bool YulOptimizerTest::parse(ostream& _stream, string const& _linePrefix, bool const _formatted)
+{
+	assembly::AsmFlavour flavour = m_yul ? assembly::AsmFlavour::Yul : assembly::AsmFlavour::Strict;
+	ErrorList errors;
+	ErrorReporter errorReporter(errors);
+	shared_ptr<Scanner> scanner = make_shared<Scanner>(CharStream(m_source), "");
+	m_ast = assembly::Parser(errorReporter, flavour).parse(scanner, false);
+	if (!m_ast || !errorReporter.errors().empty())
+	{
+		FormattedScope(_stream, _formatted, {formatting::BOLD, formatting::RED}) << _linePrefix << "Error parsing source." << endl;
+		printErrors(_stream, errorReporter.errors(), *scanner);
+		return false;
+	}
+	m_analysisInfo = make_shared<assembly::AsmAnalysisInfo>();
+	assembly::AsmAnalyzer analyzer(
+		*m_analysisInfo,
+		errorReporter,
+		dev::test::Options::get().evmVersion(),
+		boost::none,
+		flavour
+	);
+	if (!analyzer.analyze(*m_ast) || !errorReporter.errors().empty())
+	{
+		FormattedScope(_stream, _formatted, {formatting::BOLD, formatting::RED}) << _linePrefix << "Error analyzing source." << endl;
+		printErrors(_stream, errorReporter.errors(), *scanner);
+		return false;
+	}
+	return true;
+}
+
+void YulOptimizerTest::disambiguate()
+{
+	*m_ast = boost::get<Block>(Disambiguator(*m_analysisInfo)(*m_ast));
+	m_analysisInfo.reset();
+}
+
+void YulOptimizerTest::printErrors(ostream& _stream, ErrorList const& _errors, Scanner const& _scanner)
+{
+	SourceReferenceFormatter formatter(_stream, [&](string const&) -> Scanner const& { return _scanner; });
+
+	for (auto const& error: _errors)
+		formatter.printExceptionInformation(
+			*error,
+			(error->type() == Error::Type::Warning) ? "Warning" : "Error"
+		);
+}
diff --git a/test/libjulia/YulOptimizerTest.h b/test/libjulia/YulOptimizerTest.h
new file mode 100644
index 00000000..8f9a81f7
--- /dev/null
+++ b/test/libjulia/YulOptimizerTest.h
@@ -0,0 +1,75 @@
+/*
+	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/>.
+*/
+
+#pragma once
+
+#include <test/libsolidity/TestCase.h>
+
+
+namespace dev
+{
+namespace solidity
+{
+class Scanner;
+class Error;
+using ErrorList = std::vector<std::shared_ptr<Error const>>;
+namespace assembly
+{
+struct AsmAnalysisInfo;
+struct Block;
+}
+}
+namespace julia
+{
+namespace test
+{
+
+class YulOptimizerTest: public solidity::test::TestCase
+{
+public:
+	static std::unique_ptr<TestCase> create(std::string const& _filename)
+	{
+		return std::unique_ptr<TestCase>(new YulOptimizerTest(_filename));
+	}
+
+	explicit YulOptimizerTest(std::string const& _filename);
+
+	bool run(std::ostream& _stream, std::string const& _linePrefix = "", bool const _formatted = false) override;
+
+	void printSource(std::ostream& _stream, std::string const &_linePrefix = "", bool const _formatted = false) const override;
+	void printUpdatedExpectations(std::ostream& _stream, std::string const& _linePrefix) const override;
+
+private:
+	void printIndented(std::ostream& _stream, std::string const& _output, std::string const& _linePrefix = "") const;
+	bool parse(std::ostream& _stream, std::string const& _linePrefix, bool const _formatted);
+	void disambiguate();
+
+	static void printErrors(std::ostream& _stream, solidity::ErrorList const& _errors, solidity::Scanner const& _scanner);
+
+	std::string m_source;
+	bool m_yul = false;
+	std::string m_optimizerStep;
+	std::string m_expectation;
+
+	std::shared_ptr<solidity::assembly::Block> m_ast;
+	std::shared_ptr<solidity::assembly::AsmAnalysisInfo> m_analysisInfo;
+	std::string m_obtainedResult;
+};
+
+}
+}
+}
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/for_statement.yul b/test/libjulia/yulOptimizerTests/disambiguator/for_statement.yul
new file mode 100644
index 00000000..0d2a38c5
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/for_statement.yul
@@ -0,0 +1,28 @@
+// yul
+{
+    { let a:u256, b:u256 }
+    {
+        for { let a:u256 } a { a := a } {
+            let b:u256 := a
+        }
+    }
+}
+// ----
+// disambiguator
+// {
+//     {
+//         let a:u256, b:u256
+//     }
+//     {
+//         for {
+//             let a_1:u256
+//         }
+//         a_1
+//         {
+//             a_1 := a_1
+//         }
+//         {
+//             let b_1:u256 := a_1
+//         }
+//     }
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/funtion_call.yul b/test/libjulia/yulOptimizerTests/disambiguator/funtion_call.yul
new file mode 100644
index 00000000..f917bb68
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/funtion_call.yul
@@ -0,0 +1,22 @@
+// yul
+{
+    { let a:u256, b:u256, c:u256, d:u256, f:u256 }
+    {
+        function f(a:u256) -> c:u256, d:u256 {
+            let b:u256, c_1:u256 := f(a)
+        }
+    }
+}
+// ----
+// disambiguator
+// {
+//     {
+//         let a:u256, b:u256, c:u256, d:u256, f:u256
+//     }
+//     {
+//         function f_1(a_1:u256) -> c_1:u256, d_1:u256
+//         {
+//             let b_1:u256, c_1_1:u256 := f_1(a_1)
+//         }
+//     }
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/if_statement.yul b/test/libjulia/yulOptimizerTests/disambiguator/if_statement.yul
new file mode 100644
index 00000000..14f53757
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/if_statement.yul
@@ -0,0 +1,22 @@
+// yul
+{
+    { let a:u256, b:u256, c:u256 }
+    {
+        let a:bool
+        if a { let b:bool := a }
+    }
+}
+// ----
+// disambiguator
+// {
+//     {
+//         let a:u256, b:u256, c:u256
+//     }
+//     {
+//         let a_1:bool
+//         if a_1
+//         {
+//             let b_1:bool := a_1
+//         }
+//     }
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/smoke.yul b/test/libjulia/yulOptimizerTests/disambiguator/smoke.yul
new file mode 100644
index 00000000..d6cd8a61
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/smoke.yul
@@ -0,0 +1,5 @@
+{ }
+// ----
+// disambiguator
+// {
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/smoke_yul.yul b/test/libjulia/yulOptimizerTests/disambiguator/smoke_yul.yul
new file mode 100644
index 00000000..e55f4cd3
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/smoke_yul.yul
@@ -0,0 +1,6 @@
+// yul
+{ }
+// ----
+// disambiguator
+// {
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/switch_statement.yul b/test/libjulia/yulOptimizerTests/disambiguator/switch_statement.yul
new file mode 100644
index 00000000..340ecccf
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/switch_statement.yul
@@ -0,0 +1,27 @@
+// yul
+{
+    { let a:u256, b:u256, c:u256 }
+    {
+        let a:u256
+        switch a
+        case 0:u256 { let b:u256 := a }
+        default { let c:u256 := a }
+    }
+}
+// ----
+// disambiguator
+// {
+//     {
+//         let a:u256, b:u256, c:u256
+//     }
+//     {
+//         let a_1:u256
+//         switch a_1
+//         case 0:u256 {
+//             let b_1:u256 := a_1
+//         }
+//         default {
+//             let c_1:u256 := a_1
+//         }
+//     }
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/variables.yul b/test/libjulia/yulOptimizerTests/disambiguator/variables.yul
new file mode 100644
index 00000000..65bd4c8f
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/variables.yul
@@ -0,0 +1,12 @@
+// yul
+{ { let a:u256 } { let a:u256 } }
+// ----
+// disambiguator
+// {
+//     {
+//         let a:u256
+//     }
+//     {
+//         let a_1:u256
+//     }
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/variables_clash.yul b/test/libjulia/yulOptimizerTests/disambiguator/variables_clash.yul
new file mode 100644
index 00000000..e462442a
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/variables_clash.yul
@@ -0,0 +1,13 @@
+// yul
+{ { let a:u256 let a_1:u256 } { let a:u256 } }
+// ----
+// disambiguator
+// {
+//     {
+//         let a:u256
+//         let a_1:u256
+//     }
+//     {
+//         let a_2:u256
+//     }
+// }
diff --git a/test/libjulia/yulOptimizerTests/disambiguator/variables_inside_functions.yul b/test/libjulia/yulOptimizerTests/disambiguator/variables_inside_functions.yul
new file mode 100644
index 00000000..e80959f6
--- /dev/null
+++ b/test/libjulia/yulOptimizerTests/disambiguator/variables_inside_functions.yul
@@ -0,0 +1,24 @@
+// yul
+{
+    { let c:u256 let b:u256 }
+    function f(a:u256, c:u256) -> b:u256 { let x:u256 }
+    {
+        let a:u256 let x:u256
+    }
+}
+// ----
+// disambiguator
+// {
+//     {
+//         let c:u256
+//         let b:u256
+//     }
+//     function f(a:u256, c_1:u256) -> b_1:u256
+//     {
+//         let x:u256
+//     }
+//     {
+//         let a_1:u256
+//         let x_1:u256
+//     }
+// }
diff --git a/test/libsolidity/TestCase.cpp b/test/libsolidity/TestCase.cpp
index 6c4e0aea..17972269 100644
--- a/test/libsolidity/TestCase.cpp
+++ b/test/libsolidity/TestCase.cpp
@@ -29,7 +29,8 @@ using namespace std;
 
 bool TestCase::isTestFilename(boost::filesystem::path const& _filename)
 {
-	return _filename.extension().string() == ".sol" &&
+	string extension = _filename.extension().string();
+	return (extension == ".sol" || extension == ".yul") &&
 		   !boost::starts_with(_filename.string(), "~") &&
 		   !boost::starts_with(_filename.string(), ".");
 }
diff --git a/test/tools/CMakeLists.txt b/test/tools/CMakeLists.txt
index 2f107d39..bb7adc13 100644
--- a/test/tools/CMakeLists.txt
+++ b/test/tools/CMakeLists.txt
@@ -3,5 +3,5 @@ target_link_libraries(solfuzzer PRIVATE libsolc evmasm ${Boost_PROGRAM_OPTIONS_L
 
 add_executable(isoltest isoltest.cpp ../Options.cpp ../Common.cpp ../libsolidity/TestCase.cpp ../libsolidity/SyntaxTest.cpp
         ../libsolidity/AnalysisFramework.cpp ../libsolidity/SolidityExecutionFramework.cpp ../ExecutionFramework.cpp
-        ../RPCSession.cpp ../libsolidity/ASTJSONTest.cpp)
+        ../RPCSession.cpp ../libsolidity/ASTJSONTest.cpp ../libjulia/YulOptimizerTest.cpp)
 target_link_libraries(isoltest PRIVATE libsolc solidity evmasm ${Boost_PROGRAM_OPTIONS_LIBRARIES} ${Boost_UNIT_TEST_FRAMEWORK_LIBRARIES})
diff --git a/test/tools/isoltest.cpp b/test/tools/isoltest.cpp
index dac87d1c..5134fe4f 100644
--- a/test/tools/isoltest.cpp
+++ b/test/tools/isoltest.cpp
@@ -21,6 +21,7 @@
 #include <test/libsolidity/AnalysisFramework.h>
 #include <test/libsolidity/SyntaxTest.h>
 #include <test/libsolidity/ASTJSONTest.h>
+#include <test/libjulia/YulOptimizerTest.h>
 
 #include <boost/algorithm/string.hpp>
 #include <boost/algorithm/string/replace.hpp>
@@ -371,6 +372,8 @@ Allowed options)",
 
 	TestStats global_stats{0, 0};
 
+	// Actually run the tests.
+	// If you add new tests here, you also have to add them in boostTest.cpp
 	if (auto stats = runTestSuite("Syntax", testPath / "libsolidity", "syntaxTests", SyntaxTest::create, formatted))
 		global_stats += *stats;
 	else
@@ -381,6 +384,17 @@ Allowed options)",
 	else
 		return 1;
 
+	if (auto stats = runTestSuite(
+		"Yul Optimizer",
+		testPath / "libjulia",
+		"yulOptimizerTests",
+		julia::test::YulOptimizerTest::create,
+		formatted
+	))
+		global_stats += *stats;
+	else
+		return 1;
+
 	cout << endl << "Summary: ";
 	FormattedScope(cout, formatted, {BOLD, global_stats ? GREEN : RED}) <<
 		 global_stats.successCount << "/" << global_stats.testCount;