/*
* Copyright 2010 Google Inc.
*
* 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 com.google.gwt.uibinder.elementparsers;
import com.google.gwt.core.ext.UnableToCompleteException;
import com.google.gwt.dev.javac.testing.impl.MockJavaResource;
import com.google.gwt.uibinder.rebind.FieldWriter;
import com.google.gwt.uibinder.rebind.UiBinderContext;
import junit.framework.TestCase;
import org.xml.sax.SAXParseException;
/**
* Tests {@link UiChildParser}.
*/
public class UiChildParserTest extends TestCase {
private static final String CHILDREN = "#CHILDREN#";
private static final String PARSED_TYPE = "com.google.gwt.user.client.ui.HasUiChildren";
private static final String UIBINDER = "<g:HasUiChildren>" + CHILDREN
+ "</g:HasUiChildren>";
public void testAddChildWithParameters() throws SAXParseException,
UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN,
"<g:alimitedchild param1=\"1\"> <g:Label/> </g:alimitedchild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b.toString());
assertEquals(1, tester.writer.statements.size());
assertEquals("Only call was: " + tester.writer.statements.get(0),
"fieldName.addLimitedChild(<g:Label>, 1);",
tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testAddChildWithParametersMissing() throws SAXParseException,
UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN,
"<g:alimitedchild> <g:Label/> </g:alimitedchild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b);
assertEquals(1, tester.writer.statements.size());
assertEquals("Only call was: " + tester.writer.statements.get(0),
"fieldName.addLimitedChild(<g:Label>, 0);",
tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testAddLimitedChildInvalid() throws SAXParseException, UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN,
" <g:alimitedchild param1=\"1\"> <g:Label/> </g:alimitedchild>"
+ " <g:alimitedchild param1=\"2\"> <g:Label/> </g:alimitedchild>");
ElementParserTester tester = getTester();
try {
tester.parse(b.toString());
fail();
} catch (UnableToCompleteException exception) {
assertEquals(1, tester.writer.statements.size());
assertEquals("Only call should be: " + tester.writer.statements.get(0),
"fieldName.addLimitedChild(<g:Label>, 1);",
tester.writer.statements.get(0));
}
}
public void testAddNamedChild() throws SAXParseException,
UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN,
"<g:achild > <g:Label/> </g:achild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b.toString());
assertEquals(1, tester.writer.statements.size());
assertEquals("fieldName.addNamedChild(<g:Label>);",
tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testBadChild() throws SAXParseException,
UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN,
"<g:badtag> <g:Label/> </g:badtag>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b);
assertEquals("No children should have been consumed.", 0,
tester.writer.statements.size());
assertNull("Parser should never set an initializer.", w.getInitializer());
// children tags should be lowercase only
b = UIBINDER.replaceAll(CHILDREN, "<g:Child />");
w = tester.parse(b);
assertEquals("No children should have been consumed.", 0,
tester.writer.statements.size());
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testBadParamType() throws SAXParseException, UnableToCompleteException {
String b =
UIBINDER.replaceAll(CHILDREN, "<g:aIntChild > <g:Widget/> </g:aIntChild>");
ElementParserTester tester = getBadParamTester();
try {
tester.parse(b.toString());
fail("Expected to choke on non-object param type.");
} catch (UnableToCompleteException exception) {
assertEquals(0, tester.writer.statements.size());
}
}
public void testComposedParamTypeChild() throws SAXParseException, UnableToCompleteException {
String b =
UIBINDER.replaceAll(CHILDREN, "<g:aComposedParamTypeChild > <g:CheckBox/> </g:aComposedParamTypeChild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b.toString());
assertEquals(1, tester.writer.statements.size());
assertEquals("fieldName.addComposedParamTypeChild(<g:CheckBox>);", tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testIncompatibleChild() throws SAXParseException, UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN, "<g:child> <div/> </g:child>");
ElementParserTester tester = getTester();
try {
tester.parse(b);
fail("Incompatible type should have thrown an error.");
} catch (UnableToCompleteException exception) {
assertEquals(0, tester.writer.statements.size());
}
}
public void testInterfaceChild() throws SAXParseException, UnableToCompleteException {
String b =
UIBINDER.replaceAll(CHILDREN, "<g:anInterfaceChild > <g:IsWidget/> </g:anInterfaceChild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b.toString());
assertEquals(1, tester.writer.statements.size());
assertEquals("fieldName.addInterfaceChild(<g:IsWidget>);", tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testMultipleChildrenInvalid() throws SAXParseException, UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN,
"<g:child ><g:Label/><g:Label/></g:child>");
ElementParserTester tester = getTester();
try {
tester.parse(b.toString());
fail("Cannot have multiple children under an @UiChild tag.");
} catch (UnableToCompleteException exception) {
assertEquals(0, tester.writer.statements.size());
}
}
public void testNonWidgetChild() throws SAXParseException, UnableToCompleteException {
String b =
UIBINDER.replaceAll(CHILDREN, "<g:aSpecificChild > <g:MenuItem/> </g:aSpecificChild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b.toString());
assertEquals(1, tester.writer.statements.size());
assertEquals("fieldName.addSpecificTypeOfChild(<g:MenuItem>);", tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testNoAttributes() throws SAXParseException, UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN, "<g:achild ui:field='oops'> <g:Label/> </g:achild>");
ElementParserTester tester = getTester();
try {
tester.parse(b.toString());
fail("Expected to choke on disallowed parameter.");
} catch (UnableToCompleteException exception) {
assertEquals(0, tester.writer.statements.size());
}
}
public void testNoParameterChild() throws SAXParseException,
UnableToCompleteException {
String b = UIBINDER.replaceAll(CHILDREN, "<g:child> <g:Label/> </g:child>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b);
assertEquals(1, tester.writer.statements.size());
assertNull("Parser should never set an initializer.", w.getInitializer());
assertEquals("fieldName.addChild(<g:Label>);",
tester.writer.statements.get(0));
}
public void testParamTypeChild() throws SAXParseException, UnableToCompleteException {
String b =
UIBINDER.replaceAll(CHILDREN, "<g:aParamTypeChild > <g:ParamTypeImpl/> </g:aParamTypeChild>");
ElementParserTester tester = getTester();
FieldWriter w = tester.parse(b.toString());
assertEquals(1, tester.writer.statements.size());
assertEquals("fieldName.addParamTypeChild(<g:ParamTypeImpl>);", tester.writer.statements.get(0));
assertNull("Parser should never set an initializer.", w.getInitializer());
}
public void testTypeMismatchChild() throws SAXParseException, UnableToCompleteException {
String b =
UIBINDER.replaceAll(CHILDREN, "<g:aSpecificChild > <g:Widget/> </g:aSpecificChild>");
ElementParserTester tester = getTester();
try {
tester.parse(b.toString());
fail("Expected to choke on type mismatch.");
} catch (UnableToCompleteException exception) {
assertEquals(0, tester.writer.statements.size());
}
}
private ElementParserTester getBadParamTester() throws UnableToCompleteException {
MockJavaResource invalidParamType = new MockJavaResource(PARSED_TYPE) {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package com.google.gwt.user.client.ui;\n");
code.append("import com.google.gwt.uibinder.client.UiChild;\n");
code.append("public class HasUiChildren {\n");
code.append(" @UiChild\n");
code.append(" void addIntChild(int child) {\n");
code.append(" }\n\n");
code.append("}\n");
return code;
}
};
return new ElementParserTester(PARSED_TYPE,
new UiChildParser(new UiBinderContext()), invalidParamType);
}
private ElementParserTester getTester() throws UnableToCompleteException {
MockJavaResource editor = new MockJavaResource("com.google.gwt.user.client.ui.Editor") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package com.google.gwt.user.client.ui;\n");
code.append("public interface Editor<T>{\n");
code.append("}\n");
return code;
}
};
MockJavaResource checkBox = new MockJavaResource("com.google.gwt.user.client.ui.CheckBox") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package com.google.gwt.user.client.ui;\n");
code.append("public class CheckBox extends Widget implements Editor<Boolean> {");
code.append("}\n");
return code;
}
};
MockJavaResource paramType = new MockJavaResource("com.google.gwt.user.client.ui.ParamType") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package com.google.gwt.user.client.ui;\n");
code.append("public interface ParamType<T> {}\n");
return code;
}
};
MockJavaResource paramTypeImpl =
new MockJavaResource("com.google.gwt.user.client.ui.ParamTypeImpl") {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package com.google.gwt.user.client.ui;\n");
code.append("public class ParamTypeImpl<T> implements ParamType<T> {}\n");
return code;
}
};
MockJavaResource hasUiChildren = new MockJavaResource(PARSED_TYPE) {
@Override
public CharSequence getContent() {
StringBuffer code = new StringBuffer();
code.append("package com.google.gwt.user.client.ui;\n");
code.append("import com.google.gwt.uibinder.client.UiChild;\n");
code.append("import com.google.gwt.event.dom.client.ClickHandler;\n");
code.append("public class HasUiChildren<T> {\n");
code.append(" @UiChild\n");
code.append(" void addChild(Object child) {}\n\n");
code.append(" @UiChild(tagname=\"achild\")\n");
code.append(" void addNamedChild(Object child) {}\n\n");
code.append(" @UiChild(tagname=\"alimitedchild\", limit=1)\n");
code.append(" void addLimitedChild(Object child, int param1) {}\n\n");
code.append(" @UiChild(tagname=\"aSpecificChild\")\n");
code.append(" void addSpecificTypeOfChild(MenuItem child) {}\n\n");
code.append(" @UiChild(tagname=\"anInterfaceChild\")\n");
code.append(" void addInterfaceChild(IsWidget child) {}\n\n");
code.append(" @UiChild(tagname=\"aParamTypeChild\")\n");
code.append(" void addParamTypeChild(ParamType<T> child) {}\n\n");
code.append(" @UiChild(tagname=\"aComposedParamTypeChild\")\n");
code.append(" <W extends IsWidget & Editor<T>> void \n");
code.append(" addComposedParamTypeChild(W child) {}\n\n");
code.append("}\n");
return code;
}
};
return new ElementParserTester(PARSED_TYPE, new UiChildParser(new UiBinderContext()),
paramType, paramTypeImpl, editor, checkBox, hasUiChildren);
}
}