Add SelectMany tests

test/CMakeLists.txt

@@ -42,6 +42,7 @@ SET (
     ${PROJECT_SOURCE_DIR}/test/PrependTest.cpp
     ${PROJECT_SOURCE_DIR}/test/ReverseTest.cpp
     ${PROJECT_SOURCE_DIR}/test/SelectTest.cpp
+    ${PROJECT_SOURCE_DIR}/test/SelectManyTest.cpp
     ${PROJECT_SOURCE_DIR}/test/SkipTest.cpp
     ${PROJECT_SOURCE_DIR}/test/SkipWhileTest.cpp
     ${PROJECT_SOURCE_DIR}/test/SumTest.cpp

test/SelectManyTest.cpp

+#include <vector>
+#include <string>
+
+#include <gtest/gtest.h>
+#include "CommonTests.h"
+
+#include "boolinq.h"
+
+using namespace boolinq;
+
+TEST(SelectMany, AxA)
+{
+    int src[] = {1,2,3};
+    int ans[] = {1,2,2,3,3,3};
+
+    auto rng = from(src);
+    auto dst = rng.selectMany([](int a){return repeat(a, a);});
+
+    CheckRangeEqArray(dst, ans);
+}
+
+TEST(SelectMany, OneTwoThree)
+{
+    int src[] = {1,2,3};
+    int ans[] = {1,2,3,2,4,6,3,6,9};
+
+    auto rng = from(src);
+    auto dst = rng.selectMany([&src](int a){
+        return from(src).select([a](int v){return a*v;});
+    });
+
+    CheckRangeEqArray(dst, ans);
+}
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