Remove backends.

compiler/javatests/com/google/dart/compiler/backend/js/analysis/TopLevelElementIndexerTest.java

-// Copyright 2011 Google Inc. All Rights Reserved.
-
-package com.google.dart.compiler.backend.js.analysis;
-
-import com.google.common.collect.Maps;
-
-import junit.framework.TestCase;
-
-import org.mozilla.javascript.Parser;
-import org.mozilla.javascript.Token;
-import org.mozilla.javascript.ast.AstNode;
-import org.mozilla.javascript.ast.AstRoot;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Tests how "top-level" elements are identified in Javascript code.
- */
-public class TopLevelElementIndexerTest extends TestCase {
-  /**
-   * Tests that we can find top-level invocations to the RunEntry method to anchor the analysis.
-   */
-  public void testGetEntryPoints() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("function main() {} RunEntry(main)", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    
-    astRoot.visit(topLevelElementIndexer);
-    List<AstNode> entryPoints = topLevelElementIndexer.getEntryPoints();
-    assertFalse(entryPoints.isEmpty());
-    
-    // Assert that the entry point node is the "RunEntry(main) node.
-    assertEquals(astRoot.getLastChild(), entryPoints.get(0));
-  }
-  
-  /**
-   * Tests that we don't find any entry point invocations.
-   */
-  public void testGetEntryPointsEmpty() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("function main() {}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    List<AstNode> entryPoints = topLevelElementIndexer.getEntryPoints();
-    assertTrue(entryPoints.isEmpty());
-  }
-
-  /**
-   * Test that we find global symbols.
-   */
-  public void testGlobals() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("if (true) {}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    // if (true) {} should not introduce a top level name and should be a global
-    assertTrue(namesToElements.isEmpty());
-    
-    assertEquals(1, globals.size());
-  }
-  
-  /**
-   * Checks that instance methods are associated with their parent and that their names appear
-   * as fully qualified "A.prototype.Hello" and virtually as "Hello".
-   */
-  public void testInstanceFunctions() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("function A() {} A.prototype.Hello = function(){}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    assertEquals(0, globals.size());
-    // A, A.prototype.Hello and Hello
-    assertEquals(3, namesToElements.size());
-    
-    List<JavascriptElement> list = namesToElements.get("A");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    JavascriptElement a = list.get(0);
-    assertEquals(1, a.getMembers().size());
-    
-    list = namesToElements.get("A.prototype.Hello");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    
-    JavascriptElement javascriptElement = list.get(0);
-    assertEquals(list.get(0), namesToElements.get("Hello").get(0));
-    
-    assertNotNull(javascriptElement);
-    assertTrue(javascriptElement.isVirtual());
-    AstNode node = javascriptElement.getNode();
-    assertEquals(Token.EXPR_RESULT, node.getType());
-    assertEquals(a, javascriptElement.getEnclosingElement());
-  }
-  
-  /**
-   * Checks that static functions get associated with their parent.
-   */
-  public void testStaticFunctions() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("function A() {} A.Hello = function(){}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    assertEquals(0, globals.size());
-    assertEquals(2, namesToElements.size());
-    
-    List<JavascriptElement> list = namesToElements.get("A");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    JavascriptElement a = list.get(0);
-    assertFalse(a.isVirtual());
-    assertEquals(1, a.getMembers().size());
-    
-    list = namesToElements.get("A.Hello");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    
-    JavascriptElement javascriptElement = list.get(0);
-    assertFalse(javascriptElement.isVirtual());
-    
-    assertNotNull(javascriptElement);
-    AstNode node = javascriptElement.getNode();
-    assertEquals(Token.EXPR_RESULT, node.getType());
-    assertEquals(a, javascriptElement.getEnclosingElement());
-  }
-
-  public void testStaticFunctions2() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("var A = new Object(); A.Hello = function(){}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    assertEquals(0, globals.size());
-    assertEquals(2, namesToElements.size());
-    
-    List<JavascriptElement> list = namesToElements.get("A");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    JavascriptElement a = list.get(0);
-    assertFalse(a.isVirtual());
-    assertEquals(1, a.getMembers().size());
-    
-    list = namesToElements.get("A.Hello");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    
-    JavascriptElement javascriptElement = list.get(0);
-    assertFalse(javascriptElement.isVirtual());
-    
-    assertNotNull(javascriptElement);
-    AstNode node = javascriptElement.getNode();
-    assertEquals(Token.EXPR_RESULT, node.getType());
-    assertEquals(a, javascriptElement.getEnclosingElement());
-  }
-
-  public void testTopLevelFunctions() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("function Hello(){}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    assertEquals(0, globals.size());
-    assertEquals(1, namesToElements.size());
-    
-    List<JavascriptElement> list = namesToElements.get("Hello");
-    assertNotNull(list);
-    assertEquals(1, list.size());
-    
-    JavascriptElement javascriptElement = list.get(0);
-    assertNotNull(javascriptElement);
-    assertEquals(Token.FUNCTION, javascriptElement.getNode().getType());
-  }
-
-  /**
-   * Tests that names that appear in a variable declaration map to the same node if they are in 
-   * part of the same variable declaration.
-   */
-  public void testVariables() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("var A = 1, B = 2; var C;", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    assertEquals(3, namesToElements.size());
-    List<JavascriptElement> a = namesToElements.get("A");
-    List<JavascriptElement> b = namesToElements.get("B");
-    assertEquals(a.get(0).getNode(), b.get(0).getNode());
-    
-    List<JavascriptElement> c = namesToElements.get("C");
-    assertEquals(1, c.size());
-    assertNotSame(a.get(0).getNode(), c.get(0).getNode());
-  }
-
-  /**
-   * Tests that we handle "natives" correctly and that we associate virtual members with them.
-   */
-  public void testNatives() {
-    Parser parser = new Parser();
-    AstRoot astRoot = parser.parse("Array.prototype.foo = function() {}", "", 1);
-    Map<String, List<JavascriptElement>> namesToElements = Maps.newHashMap();
-    List<AstNode> globals = new ArrayList<AstNode>();
-    TopLevelElementIndexer topLevelElementIndexer =
-        new TopLevelElementIndexer(namesToElements, globals);
-    astRoot.visit(topLevelElementIndexer);
-    
-    // Array (native), Array.prototype.foo, foo
-    assertEquals(3, namesToElements.size());
-    
-    List<JavascriptElement> list = namesToElements.get("Array");
-    JavascriptElement javascriptElement = list.get(0);
-    assertTrue(javascriptElement.isNative());
-    assertEquals(1, javascriptElement.getMembers().size());
-    
-    List<JavascriptElement> staticFoo = namesToElements.get("Array.prototype.foo");
-    assertEquals(1, staticFoo.size());
-    List<JavascriptElement> virtualFoo = namesToElements.get("foo");
-    assertEquals(1, virtualFoo.size());
-    assertEquals(staticFoo.get(0), virtualFoo.get(0));
-    assertTrue(virtualFoo.get(0).isVirtual());
-  }
-}