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test/javax/el/TestELResolver.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 javax.el;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TestELResolver {
+
+    @Test
+    public void testConvertToType01() {
+        ELContext context = new TesterELContext();
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "1", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("1", result);
+    }
+
+
+    @Test
+    public void testConvertToType02() {
+        ELContext context = new TesterELContext(new TesterELResolverOne());
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "1", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("ONE", result);
+    }
+
+
+    @Test
+    public void testConvertToType03() {
+        ELContext context = new TesterELContext(new TesterELResolverOne());
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "2", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("2", result);
+    }
+
+
+    @Test
+    public void testConvertToType04() {
+        CompositeELResolver resolver = new CompositeELResolver();
+        ELContext context = new TesterELContext(resolver);
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "2", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("2", result);
+    }
+
+
+    @Test
+    public void testConvertToType05() {
+        CompositeELResolver resolver = new CompositeELResolver();
+        resolver.add(new TesterELResolverOne());
+        resolver.add(new TesterELResolverTwo());
+        ELContext context = new TesterELContext(resolver);
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "1", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("ONE", result);
+    }
+
+
+    @Test
+    public void testConvertToType06() {
+        CompositeELResolver resolver = new CompositeELResolver();
+        resolver.add(new TesterELResolverOne());
+        resolver.add(new TesterELResolverTwo());
+        ELContext context = new TesterELContext(resolver);
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "2", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("TWO", result);
+    }
+
+
+    @Test
+    public void testConvertToType07() {
+        CompositeELResolver resolver = new CompositeELResolver();
+        resolver.add(new TesterELResolverOne());
+        resolver.add(new TesterELResolverTwo());
+        ELContext context = new TesterELContext(resolver);
+
+        ValueExpression ve =
+                ELManager.getExpressionFactory().createValueExpression(
+                        context, "3", String.class);
+
+        String result = (String) ve.getValue(context);
+
+        Assert.assertEquals("3", result);
+    }
+
+    // https://bz.apache.org/bugzilla/show_bug.cgi?id=57802
+    @Test
+    public void testDefaultConvertToType() {
+        ELContext context = new TesterELContext(new StaticFieldELResolver());
+
+        ValueExpression ve = ELManager.getExpressionFactory().createValueExpression(
+                        context, "${!Boolean.FALSE}", Boolean.class);
+
+        Boolean result = (Boolean) ve.getValue(context);
+
+        Assert.assertEquals(Boolean.TRUE, result);
+    }
+}