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/*
* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
* Copyright (C) 2011, 2013-2016 The JavaParser Team.
*
* This file is part of JavaParser.
*
* JavaParser can be used either under the terms of
* a) the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* b) the terms of the Apache License
*
* You should have received a copy of both licenses in LICENCE.LGPL and
* LICENCE.APACHE. Please refer to those files for details.
*
* JavaParser is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
package com.github.javaparser.printer;
import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.body.ClassOrInterfaceDeclaration;
import com.github.javaparser.ast.body.FieldDeclaration;
import com.github.javaparser.ast.expr.VariableDeclarationExpr;
import com.github.javaparser.ast.type.PrimitiveType;
import org.junit.Test;
import static com.github.javaparser.JavaParser.*;
import static com.github.javaparser.utils.TestUtils.assertEqualsNoEol;
import static org.junit.Assert.assertEquals;
public class PrettyPrinterTest {
private String prettyPrintField(String code) {
CompilationUnit cu = parse(code);
return new PrettyPrinter().print(cu.findFirst(FieldDeclaration.class).get());
}
private String prettyPrintVar(String code) {
CompilationUnit cu = parse(code);
return new PrettyPrinter().print(cu.findAll(VariableDeclarationExpr.class).get(0));
}
@Test
public void printingArrayFields() {
String code;
code = "class A { int a, b[]; }";
assertEquals("int a, b[];", prettyPrintField(code));
code = "class A { int[] a[], b[]; }";
assertEquals("int[][] a, b;", prettyPrintField(code));
code = "class A { int[] a[][], b; }";
assertEquals("int[] a[][], b;", prettyPrintField(code));
code = "class A { int[] a, b; }";
assertEquals("int[] a, b;", prettyPrintField(code));
code = "class A { int a[], b[]; }";
assertEquals("int[] a, b;", prettyPrintField(code));
}
@Test
public void printingArrayVariables() {
String code;
code = "class A { void foo(){ int a, b[]; }}";
assertEquals("int a, b[]", prettyPrintVar(code));
code = "class A { void foo(){ int[] a[], b[]; }}";
assertEquals("int[][] a, b", prettyPrintVar(code));
code = "class A { void foo(){ int[] a[][], b; }}";
assertEquals("int[] a[][], b", prettyPrintVar(code));
code = "class A { void foo(){ int[] a, b; }}";
assertEquals("int[] a, b", prettyPrintVar(code));
code = "class A { void foo(){ int a[], b[]; }}";
assertEquals("int[] a, b", prettyPrintVar(code));
}
private String prettyPrintConfigurable(String code) {
CompilationUnit cu = parse(code);
PrettyPrinter printer = new PrettyPrinter(new PrettyPrinterConfiguration().setVisitorFactory(TestVisitor::new));
return printer.print(cu.findFirst(ClassOrInterfaceDeclaration.class).get());
}
@Test
public void printUseTestVisitor() {
String code;
code = "class A { void foo(){ int a, b[]; }}";
assertEquals("test", prettyPrintConfigurable(code));
}
@Test
public void prettyColumnAlignParameters_enabled() {
PrettyPrinterConfiguration config = new PrettyPrinterConfiguration()
.setIndent("\t")
.setColumnAlignParameters(true);
final String EOL = config.getEndOfLineCharacter();
String code = "class Example { void foo(Object arg0,Object arg1){ myMethod(1, 2, 3, 5, Object.class); } }";
String expected = "class Example {" + EOL +
"" + EOL +
"\tvoid foo(Object arg0, Object arg1) {" + EOL +
"\t\tmyMethod(1," + EOL +
"\t\t 2," + EOL +
"\t\t 3," + EOL +
"\t\t 5," + EOL +
"\t\t Object.class);" + EOL +
"\t}" + EOL +
"}" + EOL +
"";
assertEquals(expected, new PrettyPrinter(config).print(parse(code)));
}
@Test
public void prettyColumnAlignParameters_disabled() {
PrettyPrinterConfiguration config = new PrettyPrinterConfiguration();
final String EOL = config.getEndOfLineCharacter();
String code = "class Example { void foo(Object arg0,Object arg1){ myMethod(1, 2, 3, 5, Object.class); } }";
String expected = "class Example {" + EOL +
"" + EOL +
" void foo(Object arg0, Object arg1) {" + EOL +
" myMethod(1, 2, 3, 5, Object.class);" + EOL +
" }" + EOL +
"}" + EOL +
"";
assertEquals(expected, new PrettyPrinter(config).print(parse(code)));
}
@Test
public void prettyAlignMethodCallChains_enabled() {
PrettyPrinterConfiguration config = new PrettyPrinterConfiguration()
.setIndent("\t")
.setColumnAlignFirstMethodChain(true);
final String EOL = config.getEndOfLineCharacter();
String code = "class Example { void foo() { IntStream.range(0, 10).filter(x -> x % 2 == 0).map(x -> x * IntStream.of(1,3,5,1).sum()).forEach(System.out::println); } }";
String expected = "class Example {" + EOL +
"" + EOL +
"\tvoid foo() {" + EOL +
"\t\tIntStream.range(0, 10)" + EOL +
"\t\t .filter(x -> x % 2 == 0)" + EOL +
"\t\t .map(x -> x * IntStream.of(1, 3, 5, 1)" + EOL +
"\t\t .sum())" + EOL +
"\t\t .forEach(System.out::println);" + EOL +
"\t}" + EOL +
"}" + EOL +
"";
assertEquals(expected, new PrettyPrinter(config).print(parse(code)));
}
@Test
public void prettyAlignMethodCallChains_disabled() {
PrettyPrinterConfiguration config = new PrettyPrinterConfiguration();
final String EOL = config.getEndOfLineCharacter();
String code = "class Example { void foo() { IntStream.range(0, 10).filter(x -> x % 2 == 0).map(x -> x * IntStream.of(1,3,5,1).sum()).forEach(System.out::println); } }";
String expected = "class Example {" + EOL +
"" + EOL +
" void foo() {" + EOL +
" IntStream.range(0, 10).filter(x -> x % 2 == 0).map(x -> x * IntStream.of(1, 3, 5, 1).sum()).forEach(System.out::println);" + EOL +
" }" + EOL +
"}" + EOL +
"";
assertEquals(expected, new PrettyPrinter(config).print(parse(code)));
}
@Test
public void enumConstantsHorizontally() {
CompilationUnit cu = parse("enum X{A, B, C, D, E}");
assertEqualsNoEol("enum X {\n\n A, B, C, D, E\n}\n", new PrettyPrinter().print(cu));
}
@Test
public void enumConstantsVertically() {
CompilationUnit cu = parse("enum X{A, B, C, D, E, F}");
assertEqualsNoEol("enum X {\n\n A,\n B,\n C,\n D,\n E,\n F\n}\n", new PrettyPrinter().print(cu));
}
@Test
public void printingInconsistentVariables() {
FieldDeclaration fieldDeclaration = parseBodyDeclaration("int a, b;").asFieldDeclaration();
assertEquals("int a, b;", fieldDeclaration.toString());
fieldDeclaration.getVariable(0).setType(PrimitiveType.doubleType());
assertEquals("??? a, b;", fieldDeclaration.toString());
fieldDeclaration.getVariable(1).setType(PrimitiveType.doubleType());
assertEquals("double a, b;", fieldDeclaration.toString());
}
}
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