Moved test data to paths to environment variables

Added environment variables to remove relative paths from the code

oss-internship-2020/gdal/raster_to_gtiff/CMakeLists.txt

@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.12)
 
 project(GDALSandbox CXX C)
 
@@ -95,6 +95,7 @@ target_link_libraries(utils PUBLIC
   sandbox2::temp_file
   sandbox2::fileops
   sandbox2::util
+  sandbox2::file_base
 )
 
 add_library(gtiff_converter STATIC
@@ -118,15 +119,23 @@ target_link_libraries(raster_to_gtiff
 )
 
 if (ENABLE_TESTS)
-  find_package(GTest REQUIRED)
-  include_directories(${GTEST_INCLUDE_DIRS})
-  
+  include(GoogleTest)
+  enable_testing()
+
   add_executable(tests tests.cc)
   target_link_libraries(tests PRIVATE
     data_retriever
     gtiff_converter
     utils
-    ${GTEST_LIBRARIES} 
-    ${GTEST_MAIN_LIBRARIES}
+    gtest 
+    gtest_main
+    sandbox2::testing
+    sandbox2::file_base
   )
+
+  gtest_discover_tests(tests PROPERTIES
+    ENVIRONMENT "TEST_TMPDIR=/tmp/"
+    ENVIRONMENT "TEST_SRCDIR=${PROJECT_SOURCE_DIR}"
+  )
+
 endif()

oss-internship-2020/gdal/raster_to_gtiff/README.md

@@ -91,6 +91,11 @@ You can run it in the following way:
 ```
 After that, you can compare both files using the `gdalinfo` utility.
 Also, there are unit tests that automatically convert a few files and then compare input and output raster data to make sure that they are equal.
-To run tests your CMake build must use `-DENABLE_TESTS=ON`, then you can run tests using `./tests`.
+To run tests your CMake build must use `-DENABLE_TESTS=ON`, then you can run tests using `ctest`.
+Note that it will also run Sandboxed API related tests. To run tests manually you will need to specify a few environmental variables and then run `tests` executable.
+```
+export TEST_TMPDIR=/tmp/
+export TEST_SRCDIR=/path/to/project/source
+```
 
 All test data is from [osgeo samples](http://download.osgeo.org/geotiff/samples/).

oss-internship-2020/gdal/raster_to_gtiff/tests.cc

@@ -16,7 +16,9 @@
 #include <string>
 
 #include "gtest/gtest.h"
+#include "sandboxed_api/sandbox2/testing.h"
 #include "sandboxed_api/sandbox2/util/fileops.h"
+#include "sandboxed_api/sandbox2/util/path.h"
 
 #include "gdal_sandbox.h"  // NOLINT(build/include)
 #include "get_raster_data.h"  // NOLINT(build/include)
@@ -27,16 +29,16 @@ namespace {
 
 inline constexpr absl::string_view kTempFilePrefix = "temp_data";
 inline constexpr absl::string_view kFirstTestDataPath = 
-    "../testdata/cea.tif";
+    "testdata/cea.tif";
 inline constexpr absl::string_view kSecondTestDataPath = 
-    "../testdata/SP27GTIF.tif";
+    "testdata/SP27GTIF.tif";
 
 }  // namespace
 
 class TestGTiffProcessor : public testing::TestWithParam<absl::string_view> {
  public:
   TestGTiffProcessor() 
-    : tempfile_(kTempFilePrefix) 
+    : tempfile_(sandbox2::GetTestTempPath()) 
   {}
 
  protected:
@@ -44,21 +46,24 @@ class TestGTiffProcessor : public testing::TestWithParam<absl::string_view> {
 };
 
 TEST_P(TestGTiffProcessor, TestProcessorOnGTiffData) {
-  std::string filename = std::string(GetParam());
+
+  std::string file_path = gdal::sandbox::utils::GetTestDataPath(GetParam());
+
+  ASSERT_TRUE(sandbox2::file_util::fileops::Exists(file_path, false))
+      << "Error finding input dataset";
 
   ASSERT_TRUE(tempfile_.HasValue()) 
       << "Error creating temporary output file";
 
   gdal::sandbox::parser::RasterDataset original_bands_data = 
-      gdal::sandbox::parser::GetRasterBandsFromFile(filename);
+      gdal::sandbox::parser::GetRasterBandsFromFile(file_path);
 
   std::optional<std::string> proj_db_path = 
       gdal::sandbox::utils::FindProjDbPath();
   ASSERT_TRUE(proj_db_path != std::nullopt)
       << "Specified proj.db does not exist";
 
-  gdal::sandbox::RasterToGTiffProcessor processor(absl::StrCat(
-          sandbox2::file_util::fileops::GetCWD(), "/", tempfile_.GetPath()),
+  gdal::sandbox::RasterToGTiffProcessor processor(tempfile_.GetPath(),
       std::move(proj_db_path.value()), original_bands_data);
   
   ASSERT_EQ(processor.Run(), absl::OkStatus())

oss-internship-2020/gdal/raster_to_gtiff/utils.cc

@@ -17,6 +17,7 @@
 #include <unistd.h>
 
 #include "sandboxed_api/sandbox2/util/fileops.h"
+#include "sandboxed_api/sandbox2/util/path.h"
 #include "sandboxed_api/sandbox2/util/temp_file.h"
 
 namespace gdal::sandbox::utils {
@@ -70,4 +71,11 @@ std::optional<std::string> FindProjDbPath() {
   return proj_db_path;
 }
 
+std::string GetTestDataPath(absl::string_view testdata_path) {
+  const char* test_srcdir = std::getenv("TEST_SRCDIR");
+
+  return sandbox2::file::JoinPath(test_srcdir == nullptr ? 
+      sandbox2::file_util::fileops::GetCWD() : test_srcdir, testdata_path);
+}
+
 }  // namespace gdal::sandbox::utils

oss-internship-2020/gdal/raster_to_gtiff/utils.h

@@ -43,6 +43,10 @@ class TempFile {
 // Helper function to retrieve potential proj.db path from environment variable
 std::optional<std::string> FindProjDbPath();
 
+// Tries to get test folder path from the TEST_SRCDIR environment variable and
+// uses CWD path otherwise to join it with the testdata_path
+std::string GetTestDataPath(absl::string_view testdata_path);
+
 }  // namespace gdal::sandbox::utils
 
 #endif  // RASTER_TO_GTIFF_UTILS_H_