cpp-common/bt2c: add CStringView equality and non-equality operators

[babeltrace.git] / tests / cpp-common / test-c-string-view.cpp

diff --git a/tests/cpp-common/test-c-string-view.cpp b/tests/cpp-common/test-c-string-view.cpp
new file mode 100644 (file)
index 0000000..d137763
--- /dev/null
+++ b/tests/cpp-common/test-c-string-view.cpp
@@ -0,0 +1,84 @@
+/*
+ * SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2024 EfficiOS, Inc.
+ */
+
+#include <string>
+
+#include "cpp-common/bt2c/c-string-view.hpp"
+
+#include "tap/tap.h"
+
+namespace {
+
+template <typename StrT>
+const char *asConstCharPtr(StrT&& val)
+{
+    return val.data();
+}
+
+const char *asConstCharPtr(const char * const val)
+{
+    return val;
+}
+
+const char *typeName(bt2c::CStringView)
+{
+    return "bt2c::CStringView";
+}
+
+const char *typeName(const char *)
+{
+    return "const char *";
+}
+
+const char *typeName(const std::string&)
+{
+    return "std::string";
+}
+
+template <typename Str1T, typename Str2T>
+void testEq(Str1T&& lhs, Str2T&& rhs)
+{
+    BT_ASSERT(asConstCharPtr(lhs) != asConstCharPtr(rhs));
+    ok(lhs == rhs, "`%s` == `%s`", typeName(lhs), typeName(rhs));
+}
+
+template <typename Str1T, typename Str2T>
+void testNe(Str1T&& lhs, Str2T&& rhs)
+{
+    BT_ASSERT(asConstCharPtr(lhs) != asConstCharPtr(rhs));
+    ok(lhs != rhs, "`%s` != `%s`", typeName(lhs), typeName(rhs));
+}
+
+void testEquality()
+{
+    const std::string foo1 = "foo", foo2 = "foo";
+    const std::string bar = "bar";
+
+    /* `CStringView` vs `CStringView` */
+    testEq(bt2c::CStringView {foo1}, bt2c::CStringView {foo2});
+    testNe(bt2c::CStringView {foo1}, bt2c::CStringView {bar});
+
+    /* `CStringView` vs `const char *` */
+    testEq(bt2c::CStringView {foo1}, foo2.c_str());
+    testNe(bt2c::CStringView {foo1}, bar.c_str());
+    testEq(foo1.c_str(), bt2c::CStringView {foo2});
+    testNe(foo1.c_str(), bt2c::CStringView {bar});
+
+    /* `StringView` vs `std::string` */
+    testEq(bt2c::CStringView {foo1}, foo2);
+    testNe(bt2c::CStringView {foo1}, bar);
+    testEq(foo1, bt2c::CStringView {foo2});
+    testNe(foo1, bt2c::CStringView {bar});
+}
+
+} // namespace
+
+int main()
+{
+    plan_tests(10);
+    testEquality();
+    return exit_status();
+}