From 4b7ddd96c02e0917ed045064db83e82a20d9753c Mon Sep 17 00:00:00 2001
From: Christoph Lehmann <christoph.lehmann@ufz.de>
Date: Wed, 6 Jul 2016 12:37:16 +0200
Subject: [PATCH] [T] added test for bidn wrapper
---
Tests/BaseLib/TestFunctional.cpp | 204 +++++++++++++++++++++++++++++++
1 file changed, 204 insertions(+)
create mode 100644 Tests/BaseLib/TestFunctional.cpp
diff --git a/Tests/BaseLib/TestFunctional.cpp b/Tests/BaseLib/TestFunctional.cpp
new file mode 100644
index 00000000000..0137d4ec560
--- /dev/null
+++ b/Tests/BaseLib/TestFunctional.cpp
@@ -0,0 +1,204 @@
+/**
+ * \copyright
+ * Copyright (c) 2012-2016, OpenGeoSys Community (http://www.opengeosys.org)
+ * Distributed under a Modified BSD License.
+ * See accompanying file LICENSE.txt or
+ * http://www.opengeosys.org/project/license
+ *
+ */
+
+#include <gtest/gtest.h>
+#include <logog/include/logog.hpp>
+
+#include "BaseLib/Functional.h"
+
+class InstanceCounter
+{
+public:
+ InstanceCounter() {
+ ++_num_constructed;
+ }
+ InstanceCounter(InstanceCounter const&) {
+ ++_num_copied;
+ }
+ InstanceCounter(InstanceCounter&&) {
+ ++_num_moved;
+ }
+ ~InstanceCounter() {
+ ++_num_destroyed;
+ }
+
+ static int getNumberOfConstructions() { return _num_constructed; }
+ static int getNumberOfCopies() { return _num_copied; }
+ static int getNumberOfMoves() { return _num_moved; }
+ static int getNumberOfDestructions() { return _num_destroyed; }
+ static int getNumberOfInstances()
+ {
+ return _num_constructed + _num_moved + _num_copied - _num_destroyed;
+ }
+
+private:
+ static int _num_constructed;
+ static int _num_copied;
+ static int _num_moved;
+ static int _num_destroyed;
+};
+
+int InstanceCounter::_num_constructed = 0;
+int InstanceCounter::_num_copied = 0;
+int InstanceCounter::_num_moved = 0;
+int InstanceCounter::_num_destroyed = 0;
+
+class A : public InstanceCounter
+{
+public:
+ A(const double value) : _value(value) {}
+ void add(A const& other) { _value += other._value; }
+ // pass by value intended.
+ void multiply(A other) {
+ _value *= other._value;
+ other._value = 0.0;
+ }
+ double getValue() const { return _value; }
+ double& getValueRef() { return _value; }
+ double operator()(double const x) { return _value*x; }
+private:
+ double _value;
+};
+
+#define EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst) \
+ EXPECT_EQ((num_const), InstanceCounter::getNumberOfConstructions()); \
+ EXPECT_EQ((num_move), InstanceCounter::getNumberOfMoves()); \
+ EXPECT_EQ((num_copy), InstanceCounter::getNumberOfCopies()); \
+ EXPECT_EQ((num_dest), InstanceCounter::getNumberOfDestructions()); \
+ EXPECT_EQ((num_inst), InstanceCounter::getNumberOfInstances())
+
+#define UPDATE_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst) \
+ num_const = InstanceCounter::getNumberOfConstructions(); \
+ num_move = InstanceCounter::getNumberOfMoves(); \
+ num_copy = InstanceCounter::getNumberOfCopies(); \
+ num_dest = InstanceCounter::getNumberOfDestructions(); \
+ num_inst = InstanceCounter::getNumberOfInstances()
+
+TEST(BaseLib, Functional)
+{
+ A a1(3.0);
+ A a2(a1);
+
+ auto num_const = InstanceCounter::getNumberOfConstructions();
+ auto num_move = InstanceCounter::getNumberOfMoves();
+ auto num_copy = InstanceCounter::getNumberOfCopies();
+ auto num_dest = InstanceCounter::getNumberOfDestructions();
+ auto num_inst = InstanceCounter::getNumberOfInstances();
+ ASSERT_EQ(1, num_const);
+ ASSERT_EQ(0, num_move);
+ ASSERT_EQ(1, num_copy);
+ ASSERT_EQ(0, num_dest);
+ ASSERT_EQ(2, num_inst);
+
+ auto f1_get = BaseLib::easyBind(&A::getValue, a1);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(3.0, f1_get());
+
+ // check that really a reference is returned
+ {
+ auto f2_getRef = BaseLib::easyBind(&A::getValueRef, a2);
+ auto& value_ref = f2_getRef();
+ EXPECT_EQ(3.0, value_ref);
+ value_ref = 4.0;
+ EXPECT_EQ(4.0, a2.getValue());
+ }
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ // test binding to pointers
+ {
+ A* ap = &a1;
+ auto fp_get = BaseLib::easyBind(&A::getValue, ap);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(3.0, fp_get());
+
+ A const* apc = &a1;
+ auto fpc_get = BaseLib::easyBind(&A::getValue, apc);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(3.0, fpc_get());
+ }
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ // check that referenced objects are not copied
+ {
+ A& a3 = a2;
+ auto f3_get = BaseLib::easyBind(&A::getValue, a3);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(4.0, f3_get());
+ }
+ {
+ A const& a3 = a2;
+ auto f3_get = BaseLib::easyBind(&A::getValue, a3);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(4.0, f3_get());
+ }
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ // temporaries must be moved
+ {
+ auto ftemp_get = BaseLib::easyBind(&A::getValue, A(5.0));
+
+ EXPECT_EQ(num_const+1, InstanceCounter::getNumberOfConstructions());
+ EXPECT_GE(num_move+2, InstanceCounter::getNumberOfMoves());
+ EXPECT_EQ(num_copy, InstanceCounter::getNumberOfCopies());
+ EXPECT_EQ(InstanceCounter::getNumberOfMoves(),
+ InstanceCounter::getNumberOfDestructions());
+ EXPECT_EQ(num_inst+1, InstanceCounter::getNumberOfInstances());
+ UPDATE_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ EXPECT_EQ(5.0, ftemp_get());
+ }
+ // ftemp_get destroyed
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest+1, num_inst-1);
+ UPDATE_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ // test binding a callable object
+ {
+ auto f1_op = BaseLib::easyBind(a1);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(21.0, f1_op(7.0));
+ }
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ // test binding a lambda
+ {
+ double value = 2.0;
+ auto f_op = BaseLib::easyBind([&value](const double x) {
+ value *= x;
+ return value;
+ });
+ EXPECT_EQ(6.0, f_op(3.0));
+ EXPECT_EQ(6.0, value);
+ }
+
+ // check that parameters passed by reference are not copied
+ {
+ auto f1_add = BaseLib::easyBind(&A::add, a1);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ f1_add(a2);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ EXPECT_EQ(7.0, f1_get());
+ }
+
+ // check that parameters passed by value are copied
+ {
+ auto f1_mult = BaseLib::easyBind(&A::multiply, a1);
+ EXPECT_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+ f1_mult(a2);
+
+ EXPECT_EQ(num_const, InstanceCounter::getNumberOfConstructions());
+ EXPECT_GE(num_move+1, InstanceCounter::getNumberOfMoves());
+ EXPECT_EQ(num_copy+1, InstanceCounter::getNumberOfCopies());
+ EXPECT_GE(num_dest+2, InstanceCounter::getNumberOfDestructions());
+ EXPECT_EQ(num_inst, InstanceCounter::getNumberOfInstances());
+ UPDATE_INSTANCES(num_const, num_move, num_copy, num_dest, num_inst);
+
+ EXPECT_EQ(28.0, f1_get());
+ EXPECT_EQ(4.0, a2.getValue());
+ }
+}
--
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