tests: add unit tests for match engine types (#13903)

* tests: add unit tests for match engine types

* clang-format: fix formatting in TagMatchEngine test

1 files changed, 69 insertions, 0 deletions

diff --git a/tests/desktop/rule/matchEngine/RegexMatchEngine.cpp b/tests/desktop/rule/matchEngine/RegexMatchEngine.cpp
new file mode 100644
index 00000000..daaed29b
--- /dev/null
+++ b/tests/desktop/rule/matchEngine/RegexMatchEngine.cpp
@@ -0,0 +1,69 @@
+#include <desktop/rule/matchEngine/RegexMatchEngine.hpp>
+
+#include <gtest/gtest.h>
+
+using namespace Desktop::Rule;
+
+TEST(RegexMatchEngine, exactMatch) {
+    CRegexMatchEngine engine("firefox");
+    EXPECT_TRUE(engine.match("firefox"));
+    EXPECT_FALSE(engine.match("Firefox"));
+    EXPECT_FALSE(engine.match("firefox2"));
+}
+
+TEST(RegexMatchEngine, wildcardPattern) {
+    CRegexMatchEngine engine("fire.*");
+    EXPECT_TRUE(engine.match("firefox"));
+    EXPECT_TRUE(engine.match("firewall"));
+    EXPECT_FALSE(engine.match("ice"));
+}
+
+TEST(RegexMatchEngine, fullMatchRequired) {
+    CRegexMatchEngine engine("fire");
+    EXPECT_TRUE(engine.match("fire"));
+    EXPECT_FALSE(engine.match("firefox"));
+    EXPECT_FALSE(engine.match("campfire"));
+}
+
+TEST(RegexMatchEngine, characterClass) {
+    CRegexMatchEngine engine("kitty_[ABC]");
+    EXPECT_TRUE(engine.match("kitty_A"));
+    EXPECT_TRUE(engine.match("kitty_B"));
+    EXPECT_TRUE(engine.match("kitty_C"));
+    EXPECT_FALSE(engine.match("kitty_D"));
+}
+
+TEST(RegexMatchEngine, negativePrefix) {
+    CRegexMatchEngine engine("negative:firefox");
+    EXPECT_FALSE(engine.match("firefox"));
+    EXPECT_TRUE(engine.match("chromium"));
+    EXPECT_TRUE(engine.match("anything"));
+}
+
+TEST(RegexMatchEngine, negativeWithWildcard) {
+    CRegexMatchEngine engine("negative:.*\\.tmp");
+    EXPECT_FALSE(engine.match("file.tmp"));
+    EXPECT_TRUE(engine.match("file.txt"));
+    EXPECT_TRUE(engine.match("file.cpp"));
+}
+
+TEST(RegexMatchEngine, emptyPattern) {
+    CRegexMatchEngine engine("");
+    EXPECT_TRUE(engine.match(""));
+    EXPECT_FALSE(engine.match("anything"));
+}
+
+TEST(RegexMatchEngine, dotMatchesSingleChar) {
+    CRegexMatchEngine engine("a.c");
+    EXPECT_TRUE(engine.match("abc"));
+    EXPECT_TRUE(engine.match("axc"));
+    EXPECT_FALSE(engine.match("ac"));
+    EXPECT_FALSE(engine.match("abbc"));
+}
+
+TEST(RegexMatchEngine, alternation) {
+    CRegexMatchEngine engine("cat|dog");
+    EXPECT_TRUE(engine.match("cat"));
+    EXPECT_TRUE(engine.match("dog"));
+    EXPECT_FALSE(engine.match("bird"));
+}