Consider OPENPMD_BP_BACKEND in tests

Author: franzpoeschel

test/SerialIOTest.cpp

@@ -3952,6 +3952,8 @@ TEST_CASE("adios2_engines_and_file_endings")
             std::string const &requiredEngine,
             std::string const &filesystemExt,
             std::string const &jsonCfg = "{}") mutable {
+            // Env. var. OPENPMD_BP_BACKEND does not matter for this test as
+            // we always override it in the JSON config
             auto basename = "../samples/file_endings/groupbased" +
                 std::to_string(filenameCounter++);
             auto name = basename + ext;
@@ -3997,9 +3999,7 @@ TEST_CASE("adios2_engines_and_file_endings")
     groupbased_test_explicit_backend(
         "", true, "bp4", "", "adios2.engine.type = \"bp4\"");
 
-#if ADIOS2_VERSION_MAJOR * 1000000000 + ADIOS2_VERSION_MINOR * 100000000 +     \
-        ADIOS2_VERSION_PATCH * 1000000 + ADIOS2_VERSION_TWEAK >=               \
-    2701001223
+#ifdef ADIOS2_HAVE_BP5
     // BP5 tests
     groupbased_test_explicit_backend(".bp5", true, "bp5", "");
     groupbased_test_explicit_backend(
@@ -4027,7 +4027,10 @@ TEST_CASE("adios2_engines_and_file_endings")
             {
                 Series write(name, Access::CREATE, jsonCfg);
             }
-            if (directory)
+            bool isThisADIOS1 =
+                auxiliary::getEnvString("OPENPMD_BP_BACKEND", "") == "ADIOS1" &&
+                ext == ".bp";
+            if (directory && !isThisADIOS1)
             {
                 REQUIRE(auxiliary::directory_exists(filesystemname));
             }
@@ -4039,7 +4042,10 @@ TEST_CASE("adios2_engines_and_file_endings")
                 Series read(
                     name,
                     Access::READ_ONLY,
-                    "adios2.engine.type = \"" + requiredEngine + "\"");
+                    isThisADIOS1
+                        ? "backend = \"adios1\""
+                        : "backend = \"adios2\"\nadios2.engine.type = \"" +
+                            requiredEngine + "\"");
             }
         };
 
@@ -4060,9 +4066,7 @@ TEST_CASE("adios2_engines_and_file_endings")
     REQUIRE_THROWS(groupbased_test_no_explicit_backend(
         "", true, "bp4", "", "adios2.engine.type = \"bp4\""));
 
-#if ADIOS2_VERSION_MAJOR * 1000000000 + ADIOS2_VERSION_MINOR * 100000000 +     \
-        ADIOS2_VERSION_PATCH * 1000000 + ADIOS2_VERSION_TWEAK >=               \
-    2701001223
+#ifdef ADIOS2_HAVE_BP5
     // BP5 tests
     groupbased_test_no_explicit_backend(".bp5", true, "bp5", "");
     groupbased_test_no_explicit_backend(
@@ -4139,9 +4143,7 @@ TEST_CASE("adios2_engines_and_file_endings")
     filebased_test_explicit_backend(
         "", true, "bp4", "", "adios2.engine.type = \"bp4\"");
 
-#if ADIOS2_VERSION_MAJOR * 1000000000 + ADIOS2_VERSION_MINOR * 100000000 +     \
-        ADIOS2_VERSION_PATCH * 1000000 + ADIOS2_VERSION_TWEAK >=               \
-    2701001223
+#ifdef ADIOS2_HAVE_BP5
     // BP5 tests
     filebased_test_explicit_backend(".bp5", true, "bp5", "");
     filebased_test_explicit_backend(
@@ -4170,7 +4172,10 @@ TEST_CASE("adios2_engines_and_file_endings")
                 Series write(name, Access::CREATE, jsonCfg);
                 write.writeIterations()[0];
             }
-            if (directory)
+            bool isThisADIOS1 =
+                auxiliary::getEnvString("OPENPMD_BP_BACKEND", "") == "ADIOS1" &&
+                ext == ".bp";
+            if (directory && !isThisADIOS1)
             {
                 REQUIRE(auxiliary::directory_exists(filesystemname));
             }
@@ -4192,7 +4197,10 @@ TEST_CASE("adios2_engines_and_file_endings")
                 Series read(
                     name,
                     Access::READ_ONLY,
-                    "adios2.engine.type = \"" + requiredEngine + "\"");
+                    isThisADIOS1
+                        ? "backend = \"adios1\""
+                        : "backend = \"adios2\"\nadios2.engine.type = \"" +
+                            requiredEngine + "\"");
             }
         };
 
@@ -4213,9 +4221,7 @@ TEST_CASE("adios2_engines_and_file_endings")
     REQUIRE_THROWS(filebased_test_no_explicit_backend(
         "", true, "bp4", "", "adios2.engine.type = \"bp4\""));
 
-#if ADIOS2_VERSION_MAJOR * 1000000000 + ADIOS2_VERSION_MINOR * 100000000 +     \
-        ADIOS2_VERSION_PATCH * 1000000 + ADIOS2_VERSION_TWEAK >=               \
-    2701001223
+#ifdef ADIOS2_HAVE_BP5
     // BP5 tests
     filebased_test_no_explicit_backend(".bp5", true, "bp5", "");
     filebased_test_no_explicit_backend(