Populate xpath/ hierarchy

[yangtools.git] / xpath / yang-xpath-impl / src / test / java / org / opendaylight / yangtools / yang / xpath / impl / XPathParserTest.java

diff --git a/xpath/yang-xpath-impl/src/test/java/org/opendaylight/yangtools/yang/xpath/impl/XPathParserTest.java b/xpath/yang-xpath-impl/src/test/java/org/opendaylight/yangtools/yang/xpath/impl/XPathParserTest.java
new file mode 100644 (file)
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+++ b/xpath/yang-xpath-impl/src/test/java/org/opendaylight/yangtools/yang/xpath/impl/XPathParserTest.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2018 Pantheon Technologies, s.r.o.  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.xpath.impl;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.isA;
+import static org.junit.Assert.assertEquals;
+
+import com.google.common.collect.ImmutableBiMap;
+import javax.xml.xpath.XPathExpressionException;
+import org.eclipse.jdt.annotation.Nullable;
+import org.junit.Before;
+import org.junit.Test;
+import org.opendaylight.yangtools.yang.common.BiMapYangNamespaceContext;
+import org.opendaylight.yangtools.yang.common.QName;
+import org.opendaylight.yangtools.yang.common.QNameModule;
+import org.opendaylight.yangtools.yang.common.XMLNamespace;
+import org.opendaylight.yangtools.yang.common.YangNamespaceContext;
+import org.opendaylight.yangtools.yang.xpath.api.YangBinaryExpr;
+import org.opendaylight.yangtools.yang.xpath.api.YangBinaryOperator;
+import org.opendaylight.yangtools.yang.xpath.api.YangBooleanConstantExpr;
+import org.opendaylight.yangtools.yang.xpath.api.YangExpr;
+import org.opendaylight.yangtools.yang.xpath.api.YangLocationPath;
+import org.opendaylight.yangtools.yang.xpath.api.YangXPathAxis;
+import org.opendaylight.yangtools.yang.xpath.api.YangXPathMathMode;
+
+@SuppressWarnings("null")
+public class XPathParserTest {
+    private static final QNameModule DEFNS = QNameModule.create(XMLNamespace.of("defaultns"));
+    private static final YangNamespaceContext CONTEXT = new BiMapYangNamespaceContext(ImmutableBiMap.of(
+        "def", DEFNS,
+        "foo", QNameModule.create(XMLNamespace.of("foo")),
+        "bar", QNameModule.create(XMLNamespace.of("bar"))));
+
+    private @Nullable AntlrXPathParser parser;
+
+    @Before
+    public void before() {
+        parser = new AntlrXPathParser.Unqualified(YangXPathMathMode.IEEE754, CONTEXT, DEFNS);
+    }
+
+    @Test
+    public void testSmoke() throws XPathExpressionException {
+        parseExpr("../a[foo = current()/foo]");
+
+        parseExpr("3 + 5");
+        parseExpr("/a/b");
+        parseExpr("a/b");
+        parseExpr("./a/b");
+        parseExpr("../a/b");
+        parseExpr("foo:foo");
+        parseExpr("@foo");
+        parseExpr("@foo:foo");
+        parseExpr("current()");
+        parseExpr("foo:self()");
+        parseExpr("foo:comment()");
+        parseExpr("/a[foo = 2 and bar = 3]");
+        parseExpr("/a[foo = \"2\" and bar = '3']");
+        parseExpr("/foo:a[foo = 2 and bar = 3]");
+        parseExpr("//a[foo = 2 and bar = 3]");
+        parseExpr("//foo:a[foo=2 and bar:bar=3]");
+        parseExpr("a//b[foo = 2]");
+        parseExpr("foo:a//b[foo = 2]");
+        parseExpr("$foo:comment");
+        parseExpr("$comment");
+        parseExpr("$self");
+    }
+
+    @Test
+    public void testUnionSquashing() throws XPathExpressionException {
+        final YangExpr a = parseExpr("a");
+        assertEquals(a, parseExpr("a|a"));
+        assertEquals(a, parseExpr("a|a|a"));
+        assertEquals(a, parseExpr("a|a|a|a"));
+
+        final YangExpr ab = parseExpr("a|b");
+        assertEquals(ab, parseExpr("a|b|a"));
+        assertEquals(ab, parseExpr("a|b|a|b"));
+        assertEquals(ab, parseExpr("a|a|b|a|b"));
+        assertEquals(ab, parseExpr("a|b|b|a|b"));
+        assertEquals(ab, parseExpr("a|b|a|a|b"));
+    }
+
+    @Test
+    public void testNumberSquashing() throws XPathExpressionException {
+        final YangExpr two = parseExpr("2");
+        assertEquals(two, parseExpr("1 + 1"));
+        assertEquals(two, parseExpr("3 - 1"));
+        assertEquals(two, parseExpr("2 * 1"));
+        assertEquals(two, parseExpr("4 div 2"));
+        assertEquals(two, parseExpr("6 mod 4"));
+    }
+
+    @Test
+    public void testSameExprSquashing() throws XPathExpressionException {
+        // Expressions
+        assertEquals(YangBooleanConstantExpr.FALSE, parseExpr("/a != /a"));
+        assertEquals(YangBooleanConstantExpr.TRUE, parseExpr("/a = /a"));
+
+        // Numbers
+        assertEquals(YangBooleanConstantExpr.FALSE, parseExpr("2 != 2"));
+        assertEquals(YangBooleanConstantExpr.FALSE, parseExpr("2 != (1 + 1)"));
+        assertEquals(YangBooleanConstantExpr.TRUE, parseExpr("2 = 2"));
+        assertEquals(YangBooleanConstantExpr.TRUE, parseExpr("2 = (1 + 1)"));
+    }
+
+    @Test
+    public void testGreaterEqualReference() throws XPathExpressionException {
+        final YangExpr expr = parseExpr(". >= ../lower-port");
+        assertThat(expr, isA(YangBinaryExpr.class));
+
+        final YangBinaryExpr binary = (YangBinaryExpr) expr;
+        assertEquals(YangBinaryOperator.GTE, binary.getOperator());
+        assertEquals(YangLocationPath.self(), binary.getLeftExpr());
+        assertEquals(YangLocationPath.relative(YangXPathAxis.PARENT.asStep(),
+            YangXPathAxis.CHILD.asStep(QName.create(DEFNS, "lower-port"))), binary.getRightExpr());
+    }
+
+    private YangExpr parseExpr(final String xpath) throws XPathExpressionException {
+        return parser.parseExpression(xpath).getRootExpr();
+    }
+}