add some tests

4 files changed, 132 insertions, 0 deletions

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index bba1d07..96c0e95 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,3 +1,6 @@
 target_sources(test_main PUBLIC
 	string.cpp
+	list.cpp
+	ptrlist.cpp
+	util.cpp
 )
diff --git a/test/list.cpp b/test/list.cpp
new file mode 100644
index 0000000..cdb0bc1
--- /dev/null
+++ b/test/list.cpp
@@ -0,0 +1,87 @@
+#include <gtest/gtest.h>
+
+#include "backend/ListIterator.h"
+#include "backend/List.h"
+
+static void add_test_items(List<int> & foo) {
+	foo.push_back(1);
+	foo.push_back(2);
+	foo.push_back(3);
+}
+
+TEST(ListTest, PushBack) {
+	List<int> foo;
+	ASSERT_EQ(foo.size(), 0);
+
+	add_test_items(foo);
+
+	ASSERT_EQ(foo.size(), 3);
+}
+
+TEST(ListTest, Clear) {
+	List<int> foo;
+	foo.clear();
+
+	add_test_items(foo);
+
+	foo.clear();
+	ASSERT_EQ(foo.size(), 0);
+}
+
+TEST(ListTest, Remove) {
+	List<int> foo;
+	add_test_items(foo);
+
+	ASSERT_EQ(foo.size(), 3);
+	foo.remove(2);
+	ASSERT_EQ(foo.size(), 2);
+	foo.remove(2);
+	ASSERT_EQ(foo.size(), 2);
+}
+
+TEST(ListTest, RemoveDuplicates) {
+	List<int> foo;
+
+	add_test_items(foo);
+	foo.push_back(2);
+
+	ASSERT_EQ(foo.size(), 4);
+	foo.remove(2);
+	ASSERT_EQ(foo.size(), 3);
+	foo.remove(2);
+	ASSERT_EQ(foo.size(), 2);
+}
+
+TEST(ListTest, RemoveDuringIterator) {
+	List<int> foo;
+	add_test_items(foo);
+
+	for (int & value : foo) {
+		if (value == 2)
+			foo.remove(value);
+	}
+
+	ASSERT_EQ(foo.size(), 2);
+}
+
+TEST(ListTest, UnmanagedPointers) {
+	char * ptr1 = static_cast<char *>(malloc(3));
+	char * ptr2 = static_cast<char *>(malloc(3));
+
+	{
+		List<char *> foo;
+
+		foo.push_back(ptr1);
+		foo.push_back(ptr2);
+
+		// this destructor shouldn't free ptr1 and ptr2
+	}
+
+	ASSERT_NE(ptr1, nullptr);
+	ASSERT_NE(ptr2, nullptr);
+
+	// thus, these shouldn't cause double free() errors:
+	free(ptr1);
+	free(ptr2);
+}
+
diff --git a/test/ptrlist.cpp b/test/ptrlist.cpp
new file mode 100644
index 0000000..ba955c5
--- /dev/null
+++ b/test/ptrlist.cpp
@@ -0,0 +1,27 @@
+#include <gtest/gtest.h>
+
+#include "backend/PtrList.h"
+
+class FooBar {
+	int val = 3;
+	bool other = 4;
+};
+
+TEST(PtrListTest, FreePointers) {
+	// PtrList only works on classes:
+	FooBar * ptr1 = new FooBar();
+	FooBar * ptr2 = new FooBar();
+
+	{
+		PtrList<FooBar> foo;
+
+		foo.push_back(ptr1);
+		foo.push_back(ptr2);
+
+		// this destructor SHOULD free ptr1 and ptr2
+	}
+
+	ASSERT_NE(ptr1, nullptr);
+	ASSERT_NE(ptr2, nullptr);
+}
+
diff --git a/test/util.cpp b/test/util.cpp
new file mode 100644
index 0000000..e90882a
--- /dev/null
+++ b/test/util.cpp
@@ -0,0 +1,15 @@
+#include <gtest/gtest.h>
+
+#include "backend/util.h"
+
+TEST(Util, SafeFree) {
+	char * str = static_cast<char *>(malloc(3));
+	ASSERT_NE(str, nullptr);
+
+	safe_free(&str);
+	ASSERT_EQ(str, nullptr);
+
+	// this shouldn't cause double free() error:
+	safe_free(&str);
+}
+