tests: clear fs, imglib between tests

common/imglib.cc

@@ -304,6 +304,7 @@ const texture *find(std::string_view str)
 
 void clear()
 {
+    palette.clear();
     textures.clear();
 }
 

tests/test_main.cc

@@ -4,9 +4,33 @@
 
 #include <common/log.hh>
 #include <common/threads.hh>
+#include <common/fs.hh>
+#include <common/imglib.hh>
 
 bool tests_verbose = false;
 
+class clear_shared_data_listener : public testing::TestEventListener
+{
+public:
+    void OnTestProgramStart(const testing::UnitTest &unit_test) override { }
+    void OnTestIterationStart(const testing::UnitTest &unit_test, int iteration) override { }
+    void OnEnvironmentsSetUpStart(const testing::UnitTest &unit_test) override { }
+    void OnEnvironmentsSetUpEnd(const testing::UnitTest &unit_test) override { }
+    void OnTestSuiteStart(const testing::TestSuite &test_suite) override { }
+    void OnTestStart(const testing::TestInfo &test_info) override {
+    fs::clear();
+    img::clear();
+    }
+    void OnTestDisabled(const testing::TestInfo &test_info) override { }
+    void OnTestPartResult(const testing::TestPartResult &test_part_result) override { }
+    void OnTestEnd(const testing::TestInfo &test_info) override { }
+    void OnTestSuiteEnd(const testing::TestSuite &test_suite) override { }
+    void OnEnvironmentsTearDownStart(const testing::UnitTest &unit_test) override { }
+    void OnEnvironmentsTearDownEnd(const testing::UnitTest &unit_test) override { }
+    void OnTestIterationEnd(const testing::UnitTest &unit_test, int iteration) override { }
+    void OnTestProgramEnd(const testing::UnitTest &unit_test) override { }
+};
+
 int main(int argc, char **argv)
 {
     logging::preinitialize();
@@ -32,5 +56,10 @@ int main(int argc, char **argv)
     }
 
     testing::InitGoogleTest(&argc, argv);
+
+    // clear fs, etc., between each test
+    testing::TestEventListeners &listeners = testing::UnitTest::GetInstance()->listeners();
+    listeners.Append(new clear_shared_data_listener());
+
     return RUN_ALL_TESTS();
 }