Initial commit

Add .gitignore to exclude VSCode workspace files and build artifacts

test_handler.cpp

@@ -0,0 +1,141 @@
+#include "handler.hpp"
+#include <gtest/gtest.h>
+
+// Test fixture for process function tests
+class ProcessTest : public ::testing::Test {
+protected:
+    void SetUp() override {}
+    void TearDown() override {}
+};
+
+// Valid username tests
+TEST_F(ProcessTest, ValidUsernameSimple) {
+    std::string result = process("john");
+    EXPECT_EQ(result, "john");
+}
+
+TEST_F(ProcessTest, ValidUsernameWithNumbers) {
+    std::string result = process("user123");
+    EXPECT_EQ(result, "user123");
+}
+
+TEST_F(ProcessTest, ValidUsernameWithUnderscore) {
+    std::string result = process("user_name");
+    EXPECT_EQ(result, "user_name");
+}
+
+TEST_F(ProcessTest, ValidUsernameWithHyphen) {
+    std::string result = process("user-name");
+    EXPECT_EQ(result, "user-name");
+}
+
+TEST_F(ProcessTest, ValidUsernameEmptyString) {
+    std::string result = process("");
+    EXPECT_EQ(result, "");
+}
+
+// Directory traversal tests
+TEST_F(ProcessTest, DirectoryTraversalBasicDotDotSlash) {
+    std::string result = process("user../file");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalBasicDotDotBackslash) {
+    std::string result = process("user..\\file");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalURLEncodedLowercase2e2e2f) {
+    std::string result = process("user%2e%2e%2ffile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalURLEncodedLowercase2e2e5c) {
+    std::string result = process("user%2e%2e%5cfile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalURLEncodedUppercase2E2E2F) {
+    std::string result = process("user%2E%2E%2Ffile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalURLEncodedUppercase2E2E5C) {
+    std::string result = process("user%2E%2E%5Cfile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalMixedDotDot2f) {
+    std::string result = process("user..%2ffile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalMixedDotDot5c) {
+    std::string result = process("user..%5cfile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalMixedDotDot2F) {
+    std::string result = process("user..%2Ffile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, DirectoryTraversalMixedDotDot5C) {
+    std::string result = process("user..%5Cfile");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Directory traversal detected") != std::string::npos);
+}
+
+// Path detection tests
+TEST_F(ProcessTest, PathDetectionForwardSlash) {
+    std::string result = process("user/name");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Path detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, PathDetectionForwardSlashAtStart) {
+    std::string result = process("/username");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Path detected") != std::string::npos);
+}
+
+TEST_F(ProcessTest, PathDetectionForwardSlashAtEnd) {
+    std::string result = process("username/");
+    EXPECT_TRUE(result.find("InvalidInput:") == 0);
+    EXPECT_TRUE(result.find("Path detected") != std::string::npos);
+}
+
+// Edge cases
+TEST_F(ProcessTest, SingleDot) {
+    std::string result = process(".");
+    EXPECT_EQ(result, ".");
+}
+
+TEST_F(ProcessTest, DoubleDotWithoutSlash) {
+    std::string result = process("..");
+    EXPECT_EQ(result, "..");
+}
+
+TEST_F(ProcessTest, ContainsDotButNotTraversal) {
+    std::string result = process("user.name");
+    EXPECT_EQ(result, "user.name");
+}
+
+TEST_F(ProcessTest, BackslashWithoutDots) {
+    std::string result = process("user\\name");
+    EXPECT_EQ(result, "user\\name");
+}
+
+int main(int argc, char **argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}