Maintain SchemaInferenceStack in SchemaTracker

[yangtools.git] / yang / yang-model-util / src / test / java / org / opendaylight / yangtools / yang / model / util / YT1233Test.java

diff --git a/yang/yang-model-util/src/test/java/org/opendaylight/yangtools/yang/model/util/YT1233Test.java b/yang/yang-model-util/src/test/java/org/opendaylight/yangtools/yang/model/util/YT1233Test.java
new file mode 100644 (file)
index 0000000..fb7823a
--- /dev/null
+++ b/yang/yang-model-util/src/test/java/org/opendaylight/yangtools/yang/model/util/YT1233Test.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright (c) 2021 PANTHEON.tech, s.r.o. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,
+ * and is available at http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.opendaylight.yangtools.yang.model.util;
+
+import static org.hamcrest.CoreMatchers.startsWith;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertThrows;
+import static org.junit.Assert.assertTrue;
+
+import java.util.NoSuchElementException;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
+import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeEffectiveStatement;
+import org.opendaylight.yangtools.yang.model.api.stmt.GroupingEffectiveStatement;
+import org.opendaylight.yangtools.yang.test.util.YangParserTestUtils;
+
+public class YT1233Test {
+    private static EffectiveModelContext context;
+
+    private final SchemaInferenceStack stack = SchemaInferenceStack.of(context);
+
+    @BeforeClass
+    public static void beforeClass() {
+        context = YangParserTestUtils.parseYangResource("/yt1233.yang");
+    }
+
+    @Test
+    public void testExitToDataTree() {
+        final DataTreeEffectiveStatement<?> foo = stack.enterDataTree(QName.create("foo", "foo"));
+        assertSame(foo, stack.exitToDataTree());
+        assertTrue(stack.isEmpty());
+        assertSame(foo, stack.enterDataTree(foo.argument()));
+    }
+
+    @Test
+    public void testExitToGrouping() {
+        final GroupingEffectiveStatement baz = stack.enterGrouping(QName.create("foo", "baz"));
+        final DataTreeEffectiveStatement<?> xyzzy = stack.enterDataTree(QName.create("foo", "xyzzy"));
+        assertSame(xyzzy, stack.exitToDataTree());
+        assertSame(baz, stack.currentStatement());
+        assertSame(xyzzy, stack.enterDataTree(xyzzy.argument()));
+    }
+
+    @Test
+    public void testEmptyExitToDataTree() {
+        assertThrows(NoSuchElementException.class, stack::exitToDataTree);
+    }
+
+    @Test
+    public void testSchemaExitToDataTree() {
+        stack.enterSchemaTree(QName.create("foo", "bar"));
+        final IllegalStateException ex = assertThrows(IllegalStateException.class, stack::exitToDataTree);
+        assertThat(ex.getMessage(), startsWith("Unexpected current "));
+    }
+}