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test/org/apache/catalina/ssi/TestExpressionParseTree.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.catalina.ssi;
+
+import java.io.IOException;
+import java.util.Collection;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestExpressionParseTree {
+
+    private static final long LAST_MODIFIED = 60 * 60 * 24 * 1000;
+
+
+    @Test
+    public void testSimple1() throws Exception {
+        SSIMediator mediator =
+                new SSIMediator(new TesterSSIExternalResolver(), LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("a = a", mediator);
+        Assert.assertTrue(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple2() throws Exception {
+        SSIMediator mediator =
+                new SSIMediator(new TesterSSIExternalResolver(), LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("a = b", mediator);
+        Assert.assertFalse(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple3() throws Exception {
+        SSIMediator mediator =
+                new SSIMediator(new TesterSSIExternalResolver(), LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("a = /a/", mediator);
+        Assert.assertTrue(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple4() throws Exception {
+        SSIMediator mediator =
+                new SSIMediator(new TesterSSIExternalResolver(), LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("a = /b/", mediator);
+        Assert.assertFalse(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple5() throws Exception {
+        SSIExternalResolver r = new TesterSSIExternalResolver();
+        r.setVariableValue("QUERY_STRING", "a");
+        SSIMediator mediator = new SSIMediator(r, LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("$QUERY_STRING = a", mediator);
+        Assert.assertTrue(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple6() throws Exception {
+        SSIExternalResolver r = new TesterSSIExternalResolver();
+        r.setVariableValue("QUERY_STRING", "a");
+        SSIMediator mediator = new SSIMediator(r, LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("$QUERY_STRING = b", mediator);
+        Assert.assertFalse(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple7() throws Exception {
+        SSIExternalResolver r = new TesterSSIExternalResolver();
+        r.setVariableValue("QUERY_STRING", "a");
+        SSIMediator mediator = new SSIMediator(r, LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("$QUERY_STRING = /a/", mediator);
+        Assert.assertTrue(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testSimple8() throws Exception {
+        SSIExternalResolver r = new TesterSSIExternalResolver();
+        r.setVariableValue("QUERY_STRING", "a");
+        SSIMediator mediator = new SSIMediator(r, LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("$QUERY_STRING = /b/", mediator);
+        Assert.assertFalse(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testBug55176a() throws Exception {
+        SSIExternalResolver r = new TesterSSIExternalResolver();
+        r.setVariableValue("QUERY_STRING", "a=");
+        SSIMediator mediator = new SSIMediator(r, LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("$QUERY_STRING = /a=/", mediator);
+        Assert.assertTrue(ept.evaluateTree());
+    }
+
+
+    @Test
+    public void testBug55176b() throws Exception {
+        SSIExternalResolver r = new TesterSSIExternalResolver();
+        r.setVariableValue("QUERY_STRING", "a");
+        SSIMediator mediator = new SSIMediator(r, LAST_MODIFIED);
+        ExpressionParseTree ept =
+                new ExpressionParseTree("$QUERY_STRING = /a=/", mediator);
+        Assert.assertFalse(ept.evaluateTree());
+    }
+
+
+    /**
+     * Minimal implementation that provides the bare essentials require for the
+     * unit tests.
+     */
+    private static class TesterSSIExternalResolver
+            implements SSIExternalResolver {
+
+        private Map<String,String> variables = new HashMap<>();
+
+        @Override
+        public void addVariableNames(Collection<String> variableNames) {
+            // NO-OP
+        }
+
+        @Override
+        public String getVariableValue(String name) {
+            return variables.get(name);
+        }
+
+        @Override
+        public void setVariableValue(String name, String value) {
+            variables.put(name, value);
+        }
+
+        @Override
+        public Date getCurrentDate() {
+            return null;
+        }
+
+        @Override
+        public long getFileSize(String path, boolean virtual)
+                throws IOException {
+            return 0;
+        }
+
+        @Override
+        public long getFileLastModified(String path, boolean virtual)
+                throws IOException {
+            return 0;
+        }
+
+        @Override
+        public String getFileText(String path, boolean virtual)
+                throws IOException {
+            return null;
+        }
+
+        @Override
+        public void log(String message, Throwable throwable) {
+            // NO-OP
+        }
+    }
+}