fixup: fxiing npe and missing flagdir

Signed-off-by: Simon Schrottner <[email protected]>

Author: aepfli

providers/flagd/src/main/java/dev/openfeature/contrib/providers/flagd/resolver/process/InProcessResolver.java

@@ -28,6 +28,7 @@
 import java.util.Map;
 import java.util.function.Consumer;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
 
 /**
  * Resolves flag values using
@@ -204,7 +205,7 @@ private <T> ProviderEvaluation<T> resolve(Class<T> type, String key, EvaluationC
         // check variant existence
         Object value = flag.getVariants().get(resolvedVariant);
         if (value == null) {
-            if (resolvedVariant.isEmpty() && flag.getDefaultVariant().isEmpty()) {
+            if (StringUtils.isEmpty(resolvedVariant) && StringUtils.isEmpty(flag.getDefaultVariant())) {
                 return ProviderEvaluation.<T>builder()
                         .reason(Reason.ERROR.toString())
                         .errorCode(ErrorCode.FLAG_NOT_FOUND)

providers/flagd/src/test/java/dev/openfeature/contrib/providers/flagd/e2e/steps/ProviderSteps.java

@@ -46,6 +46,7 @@ public static void beforeAll() throws IOException {
         sharedTempDir = Files.createDirectories(
                 Paths.get("tmp/" + RandomStringUtils.randomAlphanumeric(8).toLowerCase() + "/"));
         container = new ComposeContainer(new File("test-harness/docker-compose.yaml"))
+                .withEnv("FLAGS_DIR", sharedTempDir.toAbsolutePath().toString())
                 .withExposedService("flagd", 8013, Wait.forListeningPort())
                 .withExposedService("flagd", 8015, Wait.forListeningPort())
                 .withExposedService("flagd", 8080, Wait.forListeningPort())