Added missing namespace stuff in tests (issue #1635)

Author: bbbales2

test/unit/math/prim/err/check_finite_test.cpp

@@ -129,6 +129,7 @@ TEST(ErrorHandlingScalar, CheckFinite_nan) {
 }
 
 TEST(ErrorHandlingScalar, CheckFiniteVectorization) {
+  using stan::math::check_finite;
   const char* function = "check_finite";
   Eigen::MatrixXd m = Eigen::MatrixXd::Constant(3, 2, 0);
   EXPECT_NO_THROW(

test/unit/math/prim/err/check_not_nan_test.cpp

@@ -87,6 +87,7 @@ TEST(ErrorHandlingScalar, CheckNotNan) {
 }
 
 TEST(ErrorHandlingScalar, CheckNotNaNVectorization) {
+  using stan::math::check_not_nan;
   const char* function = "check_not_nan";
   Eigen::MatrixXd m = Eigen::MatrixXd::Constant(3, 2, 0);
   EXPECT_NO_THROW(

test/unit/math/prim/err/check_positive_finite_test.cpp

@@ -190,6 +190,7 @@ TEST(ErrorHandlingScalar, CheckPositiveFinite_nan) {
 }
 
 TEST(ErrorHandlingScalar, CheckPositiveFiniteVectorization) {
+  using stan::math::check_positive_finite;
   const char* function = "check_positive_finite";
   Eigen::MatrixXd m = Eigen::MatrixXd::Constant(3, 2, 1);
   EXPECT_NO_THROW(check_positive_finite(function, "m",

test/unit/math/prim/err/is_scal_finite_test.cpp

@@ -4,6 +4,7 @@
 #include <vector>
 
 TEST(ErrorHandlingScalar, isScalFinite) {
+  using stan::math::is_scal_finite;
   EXPECT_FALSE(is_scal_finite(stan::math::NEGATIVE_INFTY));
   EXPECT_TRUE(is_scal_finite(-3.0));
   EXPECT_TRUE(is_scal_finite(-3));
@@ -20,6 +21,7 @@ TEST(ErrorHandlingScalar, isScalFinite) {
 }
 
 TEST(ErrorHandlingScalar, isScalFiniteVectorization) {
+  using stan::math::is_scal_finite;
   Eigen::MatrixXd m = Eigen::MatrixXd::Constant(3, 2, 1);
   EXPECT_TRUE(is_scal_finite(std::vector<Eigen::MatrixXd>{m, m, m}));
   Eigen::MatrixXd m2 = m;