[Fix] gcc-7 has compile error

This patch fixes gcc compile error (-wsign-compare,
-wmaybe-uninitialized)

**Self evaluation:**
1. Build test: [X]Passed [ ]Failed [ ]Skipped
2. Run test: [X]Passed [ ]Failed [ ]Skipped

Signed-off-by: Jihoon Lee <jhoon.it.lee@samsung.com>

diff --git a/test/unittest/unittest_nntrainer_tensor_pool.cpp b/test/unittest/unittest_nntrainer_tensor_pool.cpp
index ba2c226..fe84e21 100644 (file)
--- a/test/unittest/unittest_nntrainer_tensor_pool.cpp
+++ b/test/unittest/unittest_nntrainer_tensor_pool.cpp
@@ -178,9 +178,9 @@ TEST(TensorPool, set_batch_01_p) {
   EXPECT_NE(t1, nullptr);
   EXPECT_FALSE(t1->isAllocated());
 
-  EXPECT_EQ(t1->batch(), 1);
+  EXPECT_EQ(t1->batch(), 1u);
   EXPECT_NO_THROW(pool.setBatchSize("abc", 10));
-  EXPECT_EQ(t1->batch(), 10);
+  EXPECT_EQ(t1->batch(), 10u);
 }
 
 /**
@@ -197,7 +197,7 @@ TEST(TensorPool, set_batch_02_n) {
   EXPECT_FALSE(t1->isAllocated());
 
   EXPECT_THROW(pool.setBatchSize("not_exist", 10), std::invalid_argument);
-  EXPECT_EQ(t1->batch(), 1);
+  EXPECT_EQ(t1->batch(), 1u);
 }
 
 /**
@@ -222,7 +222,7 @@ TEST(TensorPool, finalize_01_p) {
   EXPECT_NE(t1, t2);
 
   EXPECT_NO_THROW(pool.finalize(nntrainer::BasicPlanner(), 0, 2));
-  EXPECT_EQ(pool.minMemoryRequirement(), 0);
+  EXPECT_EQ(pool.minMemoryRequirement(), 0u);
 
   EXPECT_FALSE(t1->isAllocated());
   EXPECT_FALSE(t2->isAllocated());
@@ -315,7 +315,7 @@ TEST(TensorPool, allocate_deallocate_02_n) {
  */
 TEST(TensorPool, validate_memory) {
   nntrainer::TensorPool pool;
-  nntrainer::Tensor *t1, *t2;
+  nntrainer::Tensor *t1 = nullptr, *t2 = nullptr;
 
   EXPECT_NO_THROW(
     t1 = pool.requestTensor(nntrainer::TensorDim({100}), {0},