[Test] Add memory page limitation test.

test/CMakeLists.txt

@@ -13,6 +13,7 @@ add_subdirectory(externref)
 add_subdirectory(expected)
 add_subdirectory(span)
 add_subdirectory(po)
+add_subdirectory(memlimit)
 
 if(BUILD_COVERAGE)
   setup_target_for_coverage_gcovr_html(

test/memlimit/CMakeLists.txt

+# SPDX-License-Identifier: Apache-2.0
+
+add_executable(ssvmMemLimitTests
+  MemLimitTest.cpp
+)
+
+add_test(ssvmMemLimitTests ssvmMemLimitTests)
+
+target_link_libraries(ssvmMemLimitTests
+  PRIVATE
+  utilGoogleTest
+  ssvmVM
+)

test/memlimit/MemLimitTest.cpp

+// SPDX-License-Identifier: Apache-2.0
+#include "common/configure.h"
+#include "runtime/instance/memory.h"
+
+#include "gtest/gtest.h"
+
+namespace {
+
+TEST(MemLimitTest, Limit__Pages) {
+  using MemInst = SSVM::Runtime::Instance::MemoryInstance;
+  SSVM::Configure Conf;
+  Conf.setMaxMemoryPage(256);
+
+  SSVM::AST::Limit Lim1(257);
+  MemInst Inst1(Lim1, Conf.getMaxMemoryPage());
+  ASSERT_TRUE(Inst1.getDataPtr() == nullptr);
+
+  MemInst Inst2(Lim1);
+  ASSERT_FALSE(Inst2.getDataPtr() == nullptr);
+
+  SSVM::AST::Limit Lim2(1);
+  MemInst Inst3(Lim2, Conf.getMaxMemoryPage());
+  ASSERT_FALSE(Inst3.getDataPtr() == nullptr);
+  ASSERT_FALSE(Inst3.growPage(256));
+  ASSERT_TRUE(Inst3.growPage(255));
+
+  MemInst Inst4(Lim2);
+  ASSERT_FALSE(Inst4.getDataPtr() == nullptr);
+  ASSERT_TRUE(Inst4.growPage(256));
+
+  SSVM::AST::Limit Lim3(1, 128);
+  MemInst Inst5(Lim3, Conf.getMaxMemoryPage());
+  ASSERT_FALSE(Inst5.getDataPtr() == nullptr);
+  ASSERT_FALSE(Inst5.growPage(128));
+  ASSERT_TRUE(Inst5.growPage(127));
+}
+
+} // namespace
+
+GTEST_API_ int main(int argc, char **argv) {
+  SSVM::Log::setErrorLoggingLevel();
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}