Merge analysis_testing package into analysis_server.

pkg/analysis_testing/lib/abstract_single_unit.dart

-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-
-library test.services.src.index.abstract_single_file;
-
-import 'package:analysis_testing/abstract_context.dart';
-import 'package:analyzer/src/generated/ast.dart';
-import 'package:analyzer/src/generated/element.dart';
-import 'package:analyzer/src/generated/error.dart';
-import 'package:analyzer/src/generated/java_engine.dart';
-import 'package:analyzer/src/generated/source.dart';
-import 'package:unittest/unittest.dart';
-
-
-class AbstractSingleUnitTest extends AbstractContextTest {
-  bool verifyNoTestUnitErrors = true;
-
-  String testCode;
-  String testFile = '/test.dart';
-  Source testSource;
-  CompilationUnit testUnit;
-  CompilationUnitElement testUnitElement;
-  LibraryElement testLibraryElement;
-
-  void assertNoErrorsInSource(Source source) {
-    List<AnalysisError> errors = context.getErrors(source).errors;
-    expect(errors, isEmpty);
-  }
-
-  Element findElement(String name, [ElementKind kind]) {
-    return findChildElement(testUnitElement, name, kind);
-  }
-
-  /**
-   * Returns the [SimpleIdentifier] at the given search pattern.
-   */
-  SimpleIdentifier findIdentifier(String search) {
-    return findNodeAtString(search, (node) => node is SimpleIdentifier);
-  }
-
-  AstNode findNodeAtOffset(int offset, [Predicate<AstNode> predicate]) {
-    AstNode result = new NodeLocator.con1(offset).searchWithin(testUnit);
-    if (result != null && predicate != null) {
-      result = result.getAncestor(predicate);
-    }
-    return result;
-  }
-
-  AstNode findNodeAtString(String search, [Predicate<AstNode> predicate]) {
-    int offset = findOffset(search);
-    return findNodeAtOffset(offset, predicate);
-  }
-
-  Element findNodeElementAtString(String search,
-      [Predicate<AstNode> predicate]) {
-    AstNode node = findNodeAtString(search, predicate);
-    if (node == null) {
-      return null;
-    }
-    return ElementLocator.locate(node);
-  }
-
-  int findEnd(String search) {
-    return findOffset(search) + search.length;
-  }
-
-  int findOffset(String search) {
-    int offset = testCode.indexOf(search);
-    expect(offset, isNonNegative, reason: "Not found '$search' in\n$testCode");
-    return offset;
-  }
-
-  int getLeadingIdentifierLength(String search) {
-    int length = 0;
-    while (length < search.length) {
-      int c = search.codeUnitAt(length);
-      if (c >= 'a'.codeUnitAt(0) && c <= 'z'.codeUnitAt(0)) {
-        length++;
-        continue;
-      }
-      if (c >= 'A'.codeUnitAt(0) && c <= 'Z'.codeUnitAt(0)) {
-        length++;
-        continue;
-      }
-      if (c >= '0'.codeUnitAt(0) && c <= '9'.codeUnitAt(0)) {
-        length++;
-        continue;
-      }
-      break;
-    }
-    return length;
-  }
-
-  void resolveTestUnit(String code) {
-    testCode = code;
-    testSource = addSource(testFile, code);
-    testUnit = resolveLibraryUnit(testSource);
-    if (verifyNoTestUnitErrors) {
-      assertNoErrorsInSource(testSource);
-    }
-    testUnitElement = testUnit.element;
-    testLibraryElement = testUnitElement.library;
-  }
-}