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, 52 insertions, 0 deletions

diff --git a/tests/desktop/rule/matchEngine/IntMatchEngine.cpp b/tests/desktop/rule/matchEngine/IntMatchEngine.cpp
new file mode 100644
index 00000000..a5fb13ea
--- /dev/null
+++ b/tests/desktop/rule/matchEngine/IntMatchEngine.cpp
@@ -0,0 +1,52 @@
+#include <desktop/rule/matchEngine/IntMatchEngine.hpp>
+
+#include <gtest/gtest.h>
+
+using namespace Desktop::Rule;
+
+TEST(IntMatchEngine, positiveInteger) {
+    CIntMatchEngine engine("42");
+    EXPECT_TRUE(engine.match(42));
+    EXPECT_FALSE(engine.match(41));
+    EXPECT_FALSE(engine.match(0));
+}
+
+TEST(IntMatchEngine, zero) {
+    CIntMatchEngine engine("0");
+    EXPECT_TRUE(engine.match(0));
+    EXPECT_FALSE(engine.match(1));
+}
+
+TEST(IntMatchEngine, negativeInteger) {
+    CIntMatchEngine engine("-5");
+    EXPECT_TRUE(engine.match(-5));
+    EXPECT_FALSE(engine.match(5));
+}
+
+TEST(IntMatchEngine, invalidStringDefaultsToZero) {
+    CIntMatchEngine engine("abc");
+    EXPECT_TRUE(engine.match(0));
+    EXPECT_FALSE(engine.match(1));
+}
+
+TEST(IntMatchEngine, emptyStringDefaultsToZero) {
+    CIntMatchEngine engine("");
+    EXPECT_TRUE(engine.match(0));
+    EXPECT_FALSE(engine.match(1));
+}
+
+TEST(IntMatchEngine, leadingWhitespace) {
+    CIntMatchEngine engine(" 123");
+    EXPECT_TRUE(engine.match(123));
+}
+
+TEST(IntMatchEngine, trailingNonDigits) {
+    CIntMatchEngine engine("123abc");
+    EXPECT_TRUE(engine.match(123));
+}
+
+TEST(IntMatchEngine, largeValue) {
+    CIntMatchEngine engine("999999");
+    EXPECT_TRUE(engine.match(999999));
+    EXPECT_FALSE(engine.match(0));
+}