From c7f96de12e9ce3f32cf8059a583eb9e5ff2b39e3 Mon Sep 17 00:00:00 2001
From: xutianbing <xutianbing@baidu.com>
Date: Mon, 28 Nov 2016 15:47:16 -0800
Subject: [PATCH] add unit test for deepSwap

---
 paddle/math/tests/test_matrixCompare.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/paddle/math/tests/test_matrixCompare.cpp b/paddle/math/tests/test_matrixCompare.cpp
index ae5bc5a86a..de540dad4c 100644
--- a/paddle/math/tests/test_matrixCompare.cpp
+++ b/paddle/math/tests/test_matrixCompare.cpp
@@ -448,6 +448,24 @@ void testMatrixZeroAtOffset(int height, int width) {
   MatrixCheckEqual(*cpuA, *cpuTest);
 }
 
+void testMatrixDeepSwap(int height, int width) {
+  MatrixPtr cpuA = std::make_shared<CpuMatrix>(height, width);
+  MatrixPtr cpuB = std::make_shared<CpuMatrix>(height, width);
+  MatrixPtr cpuCopyA = std::make_shared<CpuMatrix>(height, width);
+  MatrixPtr cpuCopyB = std::make_shared<CpuMatrix>(height, width);
+
+  cpuA->randomizeUniform();
+  cpuB->randomizeUniform();
+  cpuCopyA->copyFrom(*cpuA);
+  cpuCopyB->copyFrom(*cpuB);
+
+  // swap matrix cpuA and cpuB
+  cpuA->deepSwap(*cpuB);
+
+  MatrixCheckEqual(*cpuA, *cpuCopyB);
+  MatrixCheckEqual(*cpuB, *cpuCopyA);
+}
+
 void testMatrixBinaryAdd(int height, int width) {
   MatrixPtr cpuA = std::make_shared<CpuMatrix>(height, width);
   MatrixPtr cpuB = std::make_shared<CpuMatrix>(height, width);
@@ -480,6 +498,7 @@ void testMatrixAssign(int height, int width) {
   MatrixCheckEqual(*cpuA, *outputCheck);
 }
 
+
 void testMatrixAdd(int height, int width) {
   MatrixPtr cpuA = std::make_shared<CpuMatrix>(height, width);
   MatrixPtr gpuA = std::make_shared<GpuMatrix>(height, width);
@@ -798,6 +817,7 @@ TEST(Matrix, unary) {
       testMatrixBinaryAdd(height, width);
       testMatrixTanh(height, width);
       testMatrixTanhDerivative(height, width);
+      testMatrixDeepSwap(height, width);
 
       // applyTernary
       testMatrixTernarySub(height, width);
-- 
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