Add eachElementIsBetween() validator (#192)

CMakeLists.txt

@@ -164,6 +164,7 @@ set(INCLUDE
         include/tcframe/util.hpp
         include/tcframe/util/StringUtils.hpp
         include/tcframe/util/optional.hpp
+        include/tcframe/validator/vector.hpp
 )
 
 set(TEST_UNIT
@@ -258,6 +259,7 @@ set(TEST_UNIT
         test/unit/tcframe/util/OptionalTests.cpp
         test/unit/tcframe/util/StringUtilsTests.cpp
         test/unit/tcframe/util/TestUtils.hpp
+        test/unit/tcframe/validator/VectorValidatorTests.cpp
 )
 
 add_executable(test_unit ${INCLUDE} ${TEST_UNIT})

include/tcframe/validator/vector.hpp

@@ -0,0 +1,17 @@
+#include <vector>
+
+using std::vector;
+
+namespace tcframe {
+
+template<typename T>
+bool eachElementIsBetween(const vector<T>& v, T minVal, T maxVal) {
+    for (T x : v) {
+        if (x < minVal || x > maxVal) {
+            return false;
+        }
+    }
+    return true;
+}
+
+}

test/unit/tcframe/validator/VectorValidatorTests.cpp

@@ -0,0 +1,20 @@
+#include "gmock/gmock.h"
+
+#include "tcframe/validator/vector.hpp"
+
+using ::testing::Eq;
+using ::testing::Test;
+
+namespace tcframe {
+
+class VectorValidatorTests : public Test {};
+
+TEST_F(VectorValidatorTests, eachElementIsBetween) {
+    EXPECT_FALSE(eachElementIsBetween(vector<int>{2, 3, 1, 5, 4}, 1, 4));
+    EXPECT_FALSE(eachElementIsBetween(vector<int>{2, 3, 1, 5, 4}, 2, 5));
+    EXPECT_FALSE(eachElementIsBetween(vector<int>{2, 3, 1, 5, 4}, 2, 4));
+    EXPECT_TRUE(eachElementIsBetween(vector<int>{2, 3, 1, 5, 4}, 1, 5));
+    EXPECT_TRUE(eachElementIsBetween(vector<int>{2, 3, 1, 5, 4}, 0, 6));
+}
+
+}