HONEYCOMB-298 - LeafRefContext creation test

Verifies if all models in hc2vpp are compatible
with LeafRefContext(runtime check of leaf-ref references)

Change-Id: Id589fb3dc167cd147c439a2598a9818c0f596c3b
Signed-off-by: Jan Srnicek <jsrnicek@cisco.com>

1 files changed, 101 insertions, 0 deletions

diff --git a/it/api-test/src/test/java/io/fd/hc2vpp/model/test/LeafRefContextTest.java b/it/api-test/src/test/java/io/fd/hc2vpp/model/test/LeafRefContextTest.java
new file mode 100644
index 000000000..8a49673c6
--- /dev/null
+++ b/it/api-test/src/test/java/io/fd/hc2vpp/model/test/LeafRefContextTest.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ *
+ * 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 io.fd.hc2vpp.model.test;
+
+import static com.google.common.base.Preconditions.checkState;
+import static org.junit.Assert.assertNotNull;
+
+import com.google.common.base.Charsets;
+import com.google.common.base.Strings;
+import com.google.common.io.Resources;
+import java.io.IOException;
+import java.net.URL;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Set;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
+import org.junit.Test;
+import org.opendaylight.yangtools.sal.binding.generator.impl.ModuleInfoBackedContext;
+import org.opendaylight.yangtools.yang.binding.YangModelBindingProvider;
+import org.opendaylight.yangtools.yang.binding.YangModuleInfo;
+import org.opendaylight.yangtools.yang.data.impl.leafref.LeafRefContext;
+import org.opendaylight.yangtools.yang.model.api.SchemaContext;
+
+/**
+ * Tests whether LeafRefContext in is constructable from standard set of models
+ */
+public class LeafRefContextTest {
+
+    private static final String YANG_BA_PROVIDER_PATH = "META-INF/services/" + YangModelBindingProvider.class.getName();
+
+    @Test
+    public void testLeafRefContextCreation() {
+        assertNotNull(LeafRefContext.create(context()));
+    }
+
+    private SchemaContext context() {
+
+        ModuleInfoBackedContext ctx = ModuleInfoBackedContext.create();
+        final Set<YangModuleInfo> modules = modules();
+        checkState(!modules.isEmpty(), "No modules found");
+        ctx.addModuleInfos(modules);
+
+        return ctx.getSchemaContext();
+    }
+
+    private Set<YangModuleInfo> modules() {
+        try {
+            return Collections.list(getClass().getClassLoader().getResources(YANG_BA_PROVIDER_PATH))
+                    .stream()
+                    .map(LeafRefContextTest::urlToString)
+                    .flatMap(content -> Arrays.stream(content.split("\n")))
+                    .filter(line -> !Strings.isNullOrEmpty(line.trim()))
+                    .map(LeafRefContextTest::loadClass)
+                    .map(LeafRefContextTest::getInstance)
+                    .map(YangModelBindingProvider.class::cast)
+                    .map(YangModelBindingProvider::getModuleInfo)
+                    .collect(Collectors.toSet());
+        } catch (IOException e) {
+            throw new IllegalStateException("Unable to load binding providers from path: " + YANG_BA_PROVIDER_PATH, e);
+        }
+    }
+
+    private static Object getInstance(@Nonnull final Class<?> aClass) {
+        try {
+            return aClass.newInstance();
+        } catch (InstantiationException | IllegalAccessException e) {
+            throw new IllegalStateException("Unable to create instance of " + aClass);
+        }
+    }
+
+    private static Class<?> loadClass(@Nonnull final String className) {
+        try {
+            return Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            throw new IllegalArgumentException("Unable to load class: " + className, e);
+        }
+    }
+
+    private static String urlToString(@Nonnull final URL url) {
+        try {
+            return Resources.toString(url, Charsets.UTF_8);
+        } catch (IOException e) {
+            throw new IllegalArgumentException("Unable to read resource from: " + url, e);
+        }
+    }
+}