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

* tests: add unit tests for match engine types

* clang-format: fix formatting in TagMatchEngine test

4 files changed, 259 insertions, 0 deletions

diff --git a/tests/desktop/rule/matchEngine/BoolMatchEngine.cpp b/tests/desktop/rule/matchEngine/BoolMatchEngine.cpp
new file mode 100644
index 00000000..99f6d99c
--- /dev/null
+++ b/tests/desktop/rule/matchEngine/BoolMatchEngine.cpp
@@ -0,0 +1,70 @@
+#include <desktop/rule/matchEngine/BoolMatchEngine.hpp>
+
+#include <gtest/gtest.h>
+
+using namespace Desktop::Rule;
+
+TEST(BoolMatchEngine, truthyStringOne) {
+    CBoolMatchEngine engine("1");
+    EXPECT_TRUE(engine.match(true));
+    EXPECT_FALSE(engine.match(false));
+}
+
+TEST(BoolMatchEngine, truthyStringTrue) {
+    CBoolMatchEngine engine("true");
+    EXPECT_TRUE(engine.match(true));
+    EXPECT_FALSE(engine.match(false));
+}
+
+TEST(BoolMatchEngine, truthyStringYes) {
+    CBoolMatchEngine engine("yes");
+    EXPECT_TRUE(engine.match(true));
+    EXPECT_FALSE(engine.match(false));
+}
+
+TEST(BoolMatchEngine, truthyStringOn) {
+    CBoolMatchEngine engine("on");
+    EXPECT_TRUE(engine.match(true));
+    EXPECT_FALSE(engine.match(false));
+}
+
+TEST(BoolMatchEngine, truthyCaseInsensitive) {
+    CBoolMatchEngine upper("TRUE");
+    EXPECT_TRUE(upper.match(true));
+
+    CBoolMatchEngine mixed("Yes");
+    EXPECT_TRUE(mixed.match(true));
+
+    CBoolMatchEngine onUpper("ON");
+    EXPECT_TRUE(onUpper.match(true));
+}
+
+TEST(BoolMatchEngine, falsyStringZero) {
+    CBoolMatchEngine engine("0");
+    EXPECT_TRUE(engine.match(false));
+    EXPECT_FALSE(engine.match(true));
+}
+
+TEST(BoolMatchEngine, falsyStringFalse) {
+    CBoolMatchEngine engine("false");
+    EXPECT_TRUE(engine.match(false));
+    EXPECT_FALSE(engine.match(true));
+}
+
+TEST(BoolMatchEngine, falsyStringNo) {
+    CBoolMatchEngine engine("no");
+    EXPECT_TRUE(engine.match(false));
+    EXPECT_FALSE(engine.match(true));
+}
+
+TEST(BoolMatchEngine, falsyStringEmpty) {
+    CBoolMatchEngine engine("");
+    EXPECT_TRUE(engine.match(false));
+    EXPECT_FALSE(engine.match(true));
+}
+
+TEST(BoolMatchEngine, falsyStringArbitrary) {
+    CBoolMatchEngine engine("banana");
+    EXPECT_TRUE(engine.match(false));
+    EXPECT_FALSE(engine.match(true));
+}
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));
+}
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"));
+}
diff --git a/tests/desktop/rule/matchEngine/TagMatchEngine.cpp b/tests/desktop/rule/matchEngine/TagMatchEngine.cpp
new file mode 100644
index 00000000..c6fe90ef
--- /dev/null
+++ b/tests/desktop/rule/matchEngine/TagMatchEngine.cpp
@@ -0,0 +1,68 @@
+#include <desktop/rule/matchEngine/TagMatchEngine.hpp>
+#include <helpers/TagKeeper.hpp>
+
+#include <gtest/gtest.h>
+
+using namespace Desktop::Rule;
+
+TEST(TagMatchEngine, matchesExistingTag) {
+    CTagKeeper keeper;
+    keeper.applyTag("myTag");
+
+    CTagMatchEngine engine("myTag");
+    EXPECT_TRUE(engine.match(keeper));
+}
+
+TEST(TagMatchEngine, doesNotMatchMissingTag) {
+    CTagKeeper keeper;
+    keeper.applyTag("otherTag");
+
+    CTagMatchEngine engine("myTag");
+    EXPECT_FALSE(engine.match(keeper));
+}
+
+TEST(TagMatchEngine, emptyKeeper) {
+    CTagKeeper      keeper;
+
+    CTagMatchEngine engine("myTag");
+    EXPECT_FALSE(engine.match(keeper));
+}
+
+TEST(TagMatchEngine, negativeTagMatching) {
+    CTagKeeper keeper;
+    keeper.applyTag("myTag");
+
+    CTagMatchEngine negative("negative:myTag");
+    EXPECT_FALSE(negative.match(keeper));
+
+    CTagMatchEngine negativeOther("negative:otherTag");
+    EXPECT_TRUE(negativeOther.match(keeper));
+}
+
+TEST(TagMatchEngine, dynamicTagMatchesWithoutStrict) {
+    CTagKeeper keeper;
+    keeper.applyTag("myTag", true); // dynamic adds "*" suffix
+
+    CTagMatchEngine engine("myTag");
+    EXPECT_TRUE(engine.match(keeper));
+}
+
+TEST(TagMatchEngine, caseSensitive) {
+    CTagKeeper keeper;
+    keeper.applyTag("MyTag");
+
+    CTagMatchEngine lower("mytag");
+    EXPECT_FALSE(lower.match(keeper));
+
+    CTagMatchEngine exact("MyTag");
+    EXPECT_TRUE(exact.match(keeper));
+}
+
+TEST(TagMatchEngine, tagRemoval) {
+    CTagKeeper keeper;
+    keeper.applyTag("myTag");
+    keeper.applyTag("-myTag");
+
+    CTagMatchEngine engine("myTag");
+    EXPECT_FALSE(engine.match(keeper));
+}