1 files changed, 52 insertions, 0 deletions
diff --git a/test/test_span.cpp b/test/test_span.cpp
new file mode 100644
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--- /dev/null
+++ b/test/test_span.cpp
@@ -0,0 +1,52 @@
+/*
+ * libfud
+ * Copyright 2024 Dominick Allen
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "fud_array.hpp"
+#include "fud_span.hpp"
+
+#include "gtest/gtest.h"
+
+namespace fud {
+
+TEST(SpanTest, MutableSpanTest)
+{
+    Array<int, 4> data{1, 2, 3, 4};
+    auto span = Span<int, 4>::make(data);
+    for (auto& elt : span) {
+        elt *= 2;
+    }
+
+    const Array<int, 4> expected{2, 4, 6, 8};
+    EXPECT_EQ(data, expected);
+
+    const int* innerImmutable = span.data();
+    EXPECT_EQ(*innerImmutable, expected[0]);
+}
+
+TEST(SpanTest, ConstSpanTest)
+{
+    const Array<int, 4> data{1, 2, 3, 4};
+    auto span = Span<int const, 4>::make(data);
+
+    int sum = 0;
+    for (const auto& elt : span) {
+        sum += elt;
+    }
+    EXPECT_EQ(sum, 4 * 5 / 2);
+}
+
+} // namespace fud