Add more unit tests to increase coverage

.github/workflows/test-examples.yml

@@ -28,11 +28,20 @@ jobs:
       - uses: actions/checkout@v2
         with:
           submodules: 'recursive'
+      - name: Install lcov (Ubuntu)
+        if: ${{matrix.container.name=='ubuntu'}}
+        run: |
+          apt-get install -y lcov tree
+      - name: Install lcov (Fedora)
+        if: ${{matrix.container.name =='fedora'}}
+        run: |
+          dnf install -y lcov tree
       - name: Build and install runtime (with llvm-jit)
         if: ${{matrix.enable_jit}}
         run: |
           cmake -Bbuild  -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
             -DBPFTIME_LLVM_JIT=1 \
+            -DTEST_LCOV=YES \
             -DBUILD_BPFTIME_DAEMON=1 \
             -DCMAKE_CXX_FLAGS="-DDEFAULT_LOGGER_OUTPUT_PATH='\"console\"'"
           cmake --build build --config RelWithDebInfo --target install -j
@@ -41,12 +50,26 @@ jobs:
         run: |
           cmake -Bbuild  -DCMAKE_BUILD_TYPE:STRING=RelWithDebInfo \
             -DBPFTIME_LLVM_JIT=0 \
+            -DTEST_LCOV=YES \
             -DBUILD_BPFTIME_DAEMON=1 \
             -DCMAKE_CXX_FLAGS="-DDEFAULT_LOGGER_OUTPUT_PATH='\"console\"'"
           cmake --build build --config RelWithDebInfo --target install -j
       - name: Build basic examples
         run: |
             make -C example -j
+      - name: Package gcno files
+        run: |
+          find . -type f -name "*.gcno" | tar --create --gzip --file=gcno_files.tar.gz --files-from=-
+          ls -la
+          pwd
+          tree .
+      - name: Upload gcno file
+        uses: actions/upload-artifact@v4
+        with:
+          name: gcno-files-${{matrix.enable_jit && 'jit' || 'no-jit'}}-${{matrix.container.name}}
+          include-hidden-files: true
+          path: |
+            ./gcno_files.tar.gz
       - name: Upload build results (without jit)
         uses: actions/upload-artifact@v4
         if: ${{!matrix.enable_jit}}
@@ -104,68 +127,84 @@ jobs:
             victim: ./victim
             syscall_trace: true
             expected_str: "   0 test.txt"
+            name: opensnoop-libbpf-tools
           - path: libbpf-tools/statsnoop
             executable: ./statsnoop
             victim: ./victim
             syscall_trace: true
             expected_str: "victim               0    0    /sys" 
+            name: statsnoop
           - path: malloc
             executable: ./malloc
             victim: ./victim
             syscall_trace: false
             expected_str: "malloc calls: "
+            name: malloc
           - path: minimal
             executable: ./uprobe
             victim: ./victim
             syscall_trace: false
             expected_str: ""
+            name: minimal
           - path: opensnoop
             executable: ./opensnoop
             victim: ./victim
             syscall_trace: true
             expected_str: "   0 test.txt"
+            name: opensnoop
           - path: sslsniff
             executable: ./sslsniff
             victim: /bin/wget https://www.google.com
             syscall_trace: false
             expected_str: "----- DATA -----"
+            name: sslsniff
           - path: libbpf-tools/bashreadline
             executable: ./readline
             victim: /bin/bash
             syscall_trace: false
             expected_str: "info"
+            name: bashreadline
           - path: libbpf-tools/syscount
             executable: ./syscount
             victim: /bin/bash
             syscall_trace: false
             expected_str: "info"
+            name: syscount
           - path: libbpf-tools/funclatency
             executable: ./funclatency -i 1 ./victim:plus
             victim: ./victim
             syscall_trace: false
             expected_str: "|*"
+            name: funclatency
           - path: libbpf-tools/mountsnoop
             executable: ./mountsnoop
             victim: ./victim
             syscall_trace: true
             expected_str:  mount(
+            name: mountsnoop
           - path: libbpf-tools/sigsnoop
             executable: ./sigsnoop
             victim: ./victim
             syscall_trace: true
             expected_str: "victim           0         -1      0"
+            name: sigsnoop
           - path: tailcall_minimal
             executable: ./tailcall_minimal
             victim: ./victim
             syscall_trace: false
             expected_str: "See /sys/kernel/debug/tracing/trace_pipe for output (15)"
+            name: tailcall_minimal
           - path: usdt_minimal
             executable: ./usdt_minimal
             victim: ./victim
             syscall_trace: false
             expected_str: "bpf:"
+            name: usdt_minimal
 
     steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: 'recursive'
       - name: Download prebuilt runtime (with jit)
         if: ${{matrix.enable_jit}}
         uses: actions/download-artifact@v4
@@ -178,6 +217,16 @@ jobs:
         with:
           name: runtime-package-no-jit-${{matrix.container.name}}
           path: ~/.bpftime
+      - name: Download gcno files
+        uses: actions/download-artifact@v4
+        with:
+          name: gcno-files-${{matrix.enable_jit && 'jit' || 'no-jit'}}-${{matrix.container.name}}
+          path: .
+      - name: Extract gcno files
+        run: |
+          ls -lah .
+          tar -zxvf gcno_files.tar.gz
+          pwd
       - name: Install which(required by funclatency on fedora)
         if: ${{matrix.container.name=='fedora' && matrix.examples.path=='libbpf-tools/funclatency'}}
         run: |
@@ -188,9 +237,6 @@ jobs:
       - name: Show downloaded artifacts
         run: |
           ls ~/.bpftime
-      - uses: actions/checkout@v2
-        with:
-          submodules: 'recursive'
       - name: Build test assets
         run: |
           make -C example/${{matrix.examples.path}} -j
@@ -212,9 +258,38 @@ jobs:
           ROOT=$(pwd)
           cd example/${{matrix.examples.path}}
           python3 $ROOT/.github/script/run_example.py "${{matrix.examples.executable}}" "${{matrix.examples.victim}}" "${{matrix.examples.expected_str}}" "/github/home/.bpftime/bpftime -i /github/home/.bpftime" 0
+      - name: Generate example coverage (Ubuntu)
+        if: "matrix.container.image == 'ubuntu-2204'"
+        run: |
+          apt-get install -y gpg lcov
+          lcov --capture --directory . --directory .github --directory /github/home/.bpftime --output-file coverage-example.info --gcov-tool $(which gcov-12)
+          lcov --remove coverage-example.info '/usr/*' --output-file coverage-example.info
+          lcov --list coverage-example.info
+      - name: Generate example coverage (Fedora)
+        if: "matrix.container.image == 'fedora-39'"
+        run: |
+          dnf install -y lcov
+          lcov --capture --directory . --output-file coverage-example.info
+          lcov --remove coverage-example.info '/usr/*' --output-file coverage-example.info
+          lcov --list coverage-example.info
+      - name: Upload example coverage
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-example-${{matrix.container.name}}-${{matrix.enable_jit}}-${{matrix.examples.name}}-${{matrix.privilege_options.enable}}
+          include-hidden-files: false
+          path: |
+            ./coverage-example.info
+      - uses: codecov/codecov-action@v4
+        with:
+              fail_ci_if_error: true # optional (default = false)
+              files: ./coverage-example.info
+              flags: coverage-example-${{matrix.container.name}}-${{matrix.enable_jit}}-${{matrix.examples.name}}-${{matrix.privilege_options.enable}}
+              token: ${{ secrets.CODECOV_TOKEN }} # required
+              verbose: true # optional (default = false)
+
       - name: Setup tmate session
         # Setup SSH when manually triggered and failing, so we can debug CI more conveniently
         if: "${{ failure() && github.event_name == 'workflow_dispatch' }}"
         uses: mxschmitt/action-tmate@v3
         with:
-          limit-access-to-actor: true
+          limit-access-to-actor: false

Dockerfile

@@ -8,4 +8,4 @@ RUN git submodule update --init --recursive
 ENV CXX=g++
 ENV CC=gcc
 RUN make release
-ENV PATH="${PATH}:/root/.bpftime/"
+ENV PATH="${PATH}:/root/.bpftime/"

attach/base_attach_impl/base_attach_impl.hpp

@@ -5,6 +5,7 @@
 #include <functional>
 #include <optional>
 #include "attach_private_data.hpp"
+#include <stdexcept>
 namespace bpftime
 {
 namespace attach
@@ -71,7 +72,8 @@ inline uint64_t bpftime_set_retval(uint64_t value)
 	} else {
 		spdlog::error(
 			"Called bpftime_set_retval, but no retval callback was set");
-		assert(false);
+		throw std::invalid_argument(
+			"Called bpftime_set_retval, but no retval callback was set");
 	}
 	return 0;
 }
@@ -87,7 +89,8 @@ inline uint64_t bpftime_override_return(uint64_t ctx, uint64_t value)
 	} else {
 		spdlog::error(
 			"Called bpftime_override_return, but no retval callback was set");
-		assert(false);
+		throw std::invalid_argument(
+			"Called bpftime_override_return, but no retval callback was set");
 	}
 	return 0;
 }

attach/frida_uprobe_attach_impl/CMakeLists.txt

@@ -22,6 +22,8 @@ set(TEST_SOURCES
     test/test_filter_attach_with_override.cpp
     test/test_replace_attach_with_override.cpp
     test/test_attach_with_unified_interface.cpp
+    test/test_attach_private_data_parsing.cpp
+    test/test_base_attach_impl.cpp
 )
 option(TEST_LCOV "option for lcov" OFF)
 add_executable(bpftime_frida_uprobe_attach_tests ${TEST_SOURCES})

attach/frida_uprobe_attach_impl/test/test_attach_private_data_parsing.cpp

@@ -0,0 +1,15 @@
+#include <catch2/catch_test_macros.hpp>
+#include <cerrno>
+#include <memory>
+#include <frida_attach_private_data.hpp>
+using namespace bpftime;
+
+TEST_CASE("Test illegal parsing")
+{
+	SECTION("Test bad strings")
+	{
+		auto priv = std::make_unique<
+			bpftime::attach::frida_attach_private_data>();
+		REQUIRE(priv->initialize_from_string("aaa:") == -EINVAL);
+	}
+}

attach/frida_uprobe_attach_impl/test/test_base_attach_impl.cpp

@@ -0,0 +1,32 @@
+#include "catch2/catch_test_macros.hpp"
+#include <base_attach_impl.hpp>
+#include <catch2/catch_test_macros.hpp>
+#include <cstdint>
+
+using namespace bpftime::attach;
+using namespace bpftime;
+
+TEST_CASE("Test bpftime_set_retval")
+{
+	curr_thread_override_return_callback.reset();
+	REQUIRE_THROWS(bpftime_set_retval(0));
+	bool called = false;
+	curr_thread_override_return_callback = [&](uint64_t, uint64_t) {
+		called = true;
+	};
+	bpftime_set_retval(0);
+	REQUIRE(called);
+}
+
+TEST_CASE("Test bpftime_override_return")
+{
+	curr_thread_override_return_callback.reset();
+	REQUIRE_THROWS(bpftime_override_return(0, 0));
+
+	bool called = false;
+	curr_thread_override_return_callback = [&](uint64_t, uint64_t) {
+		called = true;
+	};
+	bpftime_override_return(0, 0);
+	REQUIRE(called);
+}

attach/text_segment_transformer/CMakeLists.txt

@@ -15,3 +15,8 @@ target_include_directories(bpftime_text_segment_transformer
     ${FRIDA_GUM_INSTALL_DIR}
     ${SPDLOG_INCLUDE}
 )
+
+if (${TEST_LCOV}) 
+    target_compile_options(bpftime_text_segment_transformer PRIVATE -fprofile-arcs -ftest-coverage -fprofile-update=atomic)
+    target_link_options(bpftime_text_segment_transformer PRIVATE -fprofile-arcs)
+endif()

daemon/CMakeLists.txt

@@ -12,9 +12,9 @@ set(PLACEHOLDER_INPUT ${CMAKE_CURRENT_SOURCE_DIR}/assets/placeholder)
 set(PLACEHOLDER_OUTPUT placeholder.c)
 
 add_custom_command(
-  OUTPUT placeholder.c
-  COMMAND embedfile placeholder ${PLACEHOLDER_INPUT} ${PLACEHOLDER_OUTPUT}
-  DEPENDS ${PLACEHOLDER_INPUT})
+    OUTPUT placeholder.c
+    COMMAND embedfile placeholder ${PLACEHOLDER_INPUT} ${PLACEHOLDER_OUTPUT}
+    DEPENDS ${PLACEHOLDER_INPUT})
 
 add_library(libbpftime_daemon STATIC
     user/bpf_tracer.cpp
@@ -63,3 +63,8 @@ install(TARGETS bpftime_daemon CONFIGURATIONS Release Debug RelWithDebInfo DESTI
 if(BPFTIME_ENABLE_UNIT_TESTING)
     add_subdirectory(test)
 endif()
+
+if(${TEST_LCOV})
+    target_compile_options(bpftime_daemon PUBLIC -fprofile-arcs -ftest-coverage -fprofile-update=atomic)
+    target_link_options(bpftime_daemon PUBLIC -fprofile-arcs)
+endif()

runtime/CMakeLists.txt

@@ -245,3 +245,8 @@ if(BPFTIME_ENABLE_UNIT_TESTING AND BPFTIME_BUILD_WITH_LIBBPF)
   add_subdirectory(test)
   add_subdirectory(unit-test)
 endif()
+
+if (${TEST_LCOV}) 
+  target_compile_options(${PROJECT_NAME} PUBLIC -fprofile-arcs -ftest-coverage -fprofile-update=atomic)
+  target_link_options(${PROJECT_NAME} PUBLIC  -fprofile-arcs)
+endif()

runtime/agent/CMakeLists.txt

@@ -10,6 +10,12 @@ set_target_properties(bpftime-agent PROPERTIES CXX_STANDARD 20 LINK_DEPENDS ${CM
 if(UNIX AND NOT APPLE)
 target_link_options(bpftime-agent PRIVATE -Wl,--version-script=${CMAKE_CURRENT_SOURCE_DIR}/agent.version)
 endif()
+
+if (${TEST_LCOV}) 
+  target_compile_options(bpftime-agent PRIVATE -fprofile-arcs -ftest-coverage -fprofile-update=atomic)
+  target_link_options(bpftime-agent PRIVATE -fprofile-arcs)
+endif()
+
 if(${BPFTIME_BUILD_WITH_LIBBPF})
 target_include_directories(bpftime-agent
   PRIVATE

runtime/syscall-server/CMakeLists.txt

@@ -49,3 +49,8 @@ if(${ENABLE_EBPF_VERIFIER})
     target_include_directories(bpftime-syscall-server PRIVATE ${BPFTIME_VERIFIER_INCLUDE})
     target_compile_definitions(bpftime-syscall-server PRIVATE ENABLE_EBPF_VERIFIER ENABLE_BPFTIME_VERIFIER)
 endif()
+
+if (${TEST_LCOV}) 
+    target_compile_options(bpftime-syscall-server PRIVATE -fprofile-arcs -ftest-coverage -fprofile-update=atomic)
+    target_link_options(bpftime-syscall-server PRIVATE -fprofile-arcs)
+endif()