From 35e15cb5717e5cd868f82097f9f5349d0c95d93a Mon Sep 17 00:00:00 2001
From: Tomasz Linkowski <t.linkowski@gmail.com>
Date: Thu, 7 Mar 2019 16:51:15 +0100
Subject: [PATCH] #21: introduced UniJException

---
 .../java/pl/tlinkowski/unij/core/UniJ.java    |  5 ++--
 .../unij/exception/UniJException.java         | 30 +++++++++++++++++++
 .../pl/tlinkowski/unij/core/UniJSpec.groovy   |  4 ++-
 3 files changed, 36 insertions(+), 3 deletions(-)
 create mode 100644 subprojects/unij-core/src/main/java/pl/tlinkowski/unij/exception/UniJException.java

diff --git a/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/core/UniJ.java b/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/core/UniJ.java
index 61eca1c..e76c9f7 100644
--- a/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/core/UniJ.java
+++ b/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/core/UniJ.java
@@ -25,6 +25,7 @@
 
 import pl.tlinkowski.unij.annotation.VisibleForTesting;
 import pl.tlinkowski.unij.core.provider.UnmodifiableListFactory;
+import pl.tlinkowski.unij.exception.UniJException;
 
 /**
  * @author Tomasz Linkowski
@@ -47,8 +48,8 @@ static <T> T load(Class<T> serviceClass) {
 
   private static <T> void validateLoadedServices(Collection<T> services, Class<T> serviceClass) {
     if (services.isEmpty()) {
-      throw new IllegalStateException(String.format(
-              "No %s service found. Ensure proper unij-* module is on the classpath/modulepath", serviceClass
+      throw new UniJException(String.format(
+              "No %s service found. Ensure proper unij-* module is on the classpath/modulepath", serviceClass.getName()
       ));
     }
     log.debug("{} service: found {}", serviceClass.getName(), services);
diff --git a/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/exception/UniJException.java b/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/exception/UniJException.java
new file mode 100644
index 0000000..62dd31c
--- /dev/null
+++ b/subprojects/unij-core/src/main/java/pl/tlinkowski/unij/exception/UniJException.java
@@ -0,0 +1,30 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Copyright 2019 Tomasz Linkowski.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package pl.tlinkowski.unij.exception;
+
+/**
+ * Dedicated unchecked exception for UniJ.
+ *
+ * @author Tomasz Linkowski
+ */
+public class UniJException extends RuntimeException {
+
+  public UniJException(String message) {
+    super(message);
+  }
+}
diff --git a/subprojects/unij-core/src/test/groovy/pl/tlinkowski/unij/core/UniJSpec.groovy b/subprojects/unij-core/src/test/groovy/pl/tlinkowski/unij/core/UniJSpec.groovy
index c183ab3..7db49af 100644
--- a/subprojects/unij-core/src/test/groovy/pl/tlinkowski/unij/core/UniJSpec.groovy
+++ b/subprojects/unij-core/src/test/groovy/pl/tlinkowski/unij/core/UniJSpec.groovy
@@ -20,6 +20,8 @@ package pl.tlinkowski.unij.core
 
 import spock.lang.Specification
 
+import pl.tlinkowski.unij.exception.UniJException
+
 /**
  * @author Tomasz Linkowski
  */
@@ -29,7 +31,7 @@ class UniJSpec extends Specification {
     when:
       UniJ.load(ServiceWithoutImpl)
     then:
-      thrown(IllegalStateException)
+      thrown(UniJException)
   }
 
   private static interface ServiceWithoutImpl {