Test: Add stderr stream pointer to the test suite

test/testdotfile.cpp

@@ -4,11 +4,10 @@
  * SPDX-License-Identifier: MIT
  */
 
-#include <cstdio>
+#include <cstdio> // stderr
 #include <filesystem>
 #include <string>
 #include <unistd.h> // geteuid, setegid, seteuid
-#include <utility>
 #include <vector>
 
 #include "dotfile.h"
@@ -111,7 +110,10 @@ TEST_CASE(AddDotfiles)
 
 TEST_CASE(AddNonExistentDotfiles)
 {
+	stderr = Test::TestSuite::the().outputNull();
 	Dotfile::the().add({ "/tmp/__non-existent-test-file" });
+	stderr = Test::TestSuite::the().outputErr();
+
 	EXPECT(!std::filesystem::exists("__non-existent-test-file"));
 }
 

test/testsuite.cpp

@@ -11,6 +11,7 @@ namespace Test {
 TestSuite::TestSuite(s)
 {
 	m_outputStd = stdout;
+	m_outputErr = stderr;
 	m_outputNull = fopen("/dev/null", "w"); // Windows: nul
 }
 

test/testsuite.h

@@ -19,11 +19,13 @@ public:
 	void currentTestCaseFailed() { m_currentTestCasePassed = false; }
 
 	FILE* outputStd() const { return m_outputStd; }
+	FILE* outputErr() const { return m_outputErr; }
 	FILE* outputNull() const { return m_outputNull; }
 
 private:
 	bool m_currentTestCasePassed { true };
 	FILE* m_outputStd { nullptr };
+	FILE* m_outputErr { nullptr };
 	FILE* m_outputNull { nullptr };
 
 	std::vector<TestCase> m_cases;