'Inline Method' refactoring.

pkg/analysis_server/test/services/refactoring/inline_method_test.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.refactoring.inline_method;
+
+import 'dart:async';
+
+import 'package:analysis_server/src/protocol.dart' hide Element;
+import 'package:analysis_server/src/services/refactoring/inline_method.dart';
+import 'package:analysis_server/src/services/refactoring/refactoring.dart';
+import 'package:analysis_testing/reflective_tests.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:unittest/unittest.dart';
+
+import 'abstract_refactoring.dart';
+
+
+main() {
+  groupSep = ' | ';
+  runReflectiveTests(InlineMethodTest);
+}
+
+
+@ReflectiveTestCase()
+class InlineMethodTest extends RefactoringTest {
+  InlineMethodRefactoringImpl refactoring;
+  bool deleteSource;
+  bool inlineAll;
+
+  test_access_FunctionElement() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate state
+    return refactoring.checkInitialConditions().then((_) {
+      expect(refactoring.refactoringName, 'Inline Function');
+    });
+  }
+
+  test_access_MethodElement() {
+    indexTestUnit(r'''
+class A {
+  test(a, b) {
+    return a + b;
+  }
+  main() {
+    var res = test(1, 2);
+  }
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate state
+    return refactoring.checkInitialConditions().then((_) {
+      expect(refactoring.refactoringName, 'Inline Method');
+    });
+  }
+
+  test_bad_cascadeInvocation() {
+    indexTestUnit(r'''
+class A {
+  foo() {}
+  bar() {}
+  test() {}
+}
+main() {
+ A a = new A();
+ a..foo()..test()..bar();
+}
+''');
+    _createRefactoring('test() {');
+    // error
+    return refactoring.checkAllConditions().then((status) {
+      var location = new SourceRange(findOffset('..test()'), '..test()'.length);
+      assertRefactoringStatus(
+          status,
+          RefactoringProblemSeverity.ERROR,
+          expectedMessage: 'Cannot inline cascade invocation.',
+          expectedContextRange: location);
+    });
+  }
+
+  test_bad_deleteSource_inlineOne() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res1 = test(1, 2);
+  var res2 = test(10, 20);
+}
+''');
+    _createRefactoring('test(1, 2)');
+    // error
+    return refactoring.checkInitialConditions().then((status) {
+      assertRefactoringStatusOK(status);
+      refactoring.deleteSource = true;
+      refactoring.inlineAll = false;
+      return refactoring.checkFinalConditions().then((status) {
+        assertRefactoringStatus(
+            status,
+            RefactoringProblemSeverity.ERROR,
+            expectedMessage: 'All references must be inlined to remove the source.');
+      });
+    });
+  }
+
+  test_bad_notExecutableElement() {
+    indexTestUnit(r'''
+main() {
+}
+''');
+    _createRefactoring(') {');
+    // error
+    return _assertConditionsFatal(
+        'Method declaration or reference must be selected to activate this refactoring.');
+  }
+
+  test_bad_notSimpleIdentifier() {
+    indexTestUnit(r'''
+main() {
+  var test = 42;
+  var res = test;
+}
+''');
+    _createRefactoring('test;');
+    // error
+    return _assertConditionsFatal(
+        'Method declaration or reference must be selected to activate this refactoring.');
+  }
+
+  test_bad_operator() {
+    indexTestUnit(r'''
+class A {
+  operator -(other) => this;
+}
+''');
+    _createRefactoring('-(other)');
+    // error
+    return _assertConditionsFatal('Cannot inline operator.');
+  }
+
+  test_bad_reference_toClassMethod() {
+    indexTestUnit(r'''
+class A {
+  test(a, b) {
+    print(a);
+    print(b);
+  }
+}
+main() {
+  print(new A().test);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // error
+    return _assertConditionsFatal('Cannot inline class method reference.');
+  }
+
+  test_bad_severalReturns() {
+    indexTestUnit(r'''
+test() {
+  if (true) {
+    return 1;
+  }
+  return 2;
+}
+main() {
+  var res = test();
+}
+''');
+    _createRefactoring('test() {');
+    // error
+    return _assertConditionsError('Ambiguous return value.');
+  }
+
+  test_fieldAccessor_getter() {
+    indexTestUnit(r'''
+class A {
+  var f;
+  get foo {
+    return f * 2;
+  }
+}
+main() {
+  A a = new A();
+  print(a.foo);
+}
+''');
+    _createRefactoring('foo {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var f;
+}
+main() {
+  A a = new A();
+  print(a.f * 2);
+}
+''');
+  }
+
+  test_fieldAccessor_getter_PropertyAccess() {
+    indexTestUnit(r'''
+class A {
+  var f;
+  get foo {
+    return f * 2;
+  }
+}
+class B {
+  A a = new A();
+}
+main() {
+  B b = new B();
+  print(b.a.foo);
+}
+''');
+    _createRefactoring('foo {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var f;
+}
+class B {
+  A a = new A();
+}
+main() {
+  B b = new B();
+  print(b.a.f * 2);
+}
+''');
+  }
+
+  test_fieldAccessor_setter() {
+    indexTestUnit(r'''
+class A {
+  var f;
+  set foo(x) {
+    f = x;
+  }
+}
+main() {
+  A a = new A();
+  a.foo = 0;
+}
+''');
+    _createRefactoring('foo(x) {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var f;
+}
+main() {
+  A a = new A();
+  a.f = 0;
+}
+''');
+  }
+
+  test_fieldAccessor_setter_PropertyAccess() {
+    indexTestUnit(r'''
+class A {
+  var f;
+  set foo(x) {
+    f = x;
+  }
+}
+class B {
+  A a = new A();
+}
+main() {
+  B b = new B();
+  b.a.foo = 0;
+}
+''');
+    _createRefactoring('foo(x) {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var f;
+}
+class B {
+  A a = new A();
+}
+main() {
+  B b = new B();
+  b.a.f = 0;
+}
+''');
+  }
+
+  test_function_expressionFunctionBody() {
+    indexTestUnit(r'''
+test(a, b) => a + b;
+main() {
+  print(test(1, 2));
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print(1 + 2);
+}
+''');
+  }
+
+  test_function_hasReturn_assign() {
+    indexTestUnit(r'''
+test(a, b) {
+  print(a);
+  print(b);
+  return a + b;
+}
+main() {
+  var v;
+  v = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var v;
+  print(1);
+  print(2);
+  v = 1 + 2;
+}
+''');
+  }
+
+  test_function_hasReturn_hasReturnType() {
+    indexTestUnit(r'''
+int test(a, b) {
+  return a + b;
+}
+main() {
+  var v = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var v = 1 + 2;
+}
+''');
+  }
+
+  test_function_hasReturn_noVars_oneUsage() {
+    indexTestUnit(r'''
+test(a, b) {
+  print(a);
+  print(b);
+  return a + b;
+}
+main() {
+  var v = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print(1);
+  print(2);
+  var v = 1 + 2;
+}
+''');
+  }
+
+  test_function_multilineString() {
+    indexTestUnit(r"""
+main() {
+  {
+    test();
+  }
+}
+test() {
+  print('''
+first line
+second line
+    ''');
+}
+""");
+    _createRefactoring('test() {');
+    // validate change
+    return _assertSuccessfulRefactoring(r"""
+main() {
+  {
+    print('''
+first line
+second line
+    ''');
+  }
+}
+""");
+  }
+
+  test_function_noReturn_hasVars_hasConflict_fieldSuperClass() {
+    indexTestUnit(r'''
+class A {
+  var c;
+}
+class B extends A {
+  foo() {
+    test(1, 2);
+  }
+}
+test(a, b) {
+  var c = a + b;
+  print(c);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var c;
+}
+class B extends A {
+  foo() {
+    var c2 = 1 + 2;
+    print(c2);
+  }
+}
+''');
+  }
+
+  test_function_noReturn_hasVars_hasConflict_fieldThisClass() {
+    indexTestUnit(r'''
+class A {
+  var c;
+  foo() {
+    test(1, 2);
+  }
+}
+test(a, b) {
+  var c = a + b;
+  print(c);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var c;
+  foo() {
+    var c2 = 1 + 2;
+    print(c2);
+  }
+}
+''');
+  }
+
+  test_function_noReturn_hasVars_hasConflict_localAfter() {
+    indexTestUnit(r'''
+test(a, b) {
+  var c = a + b;
+  print(c);
+}
+main() {
+  test(1, 2);
+  var c = 0;
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var c2 = 1 + 2;
+  print(c2);
+  var c = 0;
+}
+''');
+  }
+
+  test_function_noReturn_hasVars_hasConflict_localBefore() {
+    indexTestUnit(r'''
+test(a, b) {
+  var c = a + b;
+  print(c);
+}
+main() {
+  var c = 0;
+  test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var c = 0;
+  var c2 = 1 + 2;
+  print(c2);
+}
+''');
+  }
+
+  test_function_noReturn_hasVars_noConflict() {
+    indexTestUnit(r'''
+test(a, b) {
+  var c = a + b;
+  print(c);
+}
+main() {
+  test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var c = 1 + 2;
+  print(c);
+}
+''');
+  }
+
+  test_function_noReturn_noVars_oneUsage() {
+    indexTestUnit(r'''
+test(a, b) {
+  print(a);
+  print(b);
+}
+main() {
+  test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print(1);
+  print(2);
+}
+''');
+  }
+
+  test_function_noReturn_noVars_useIndentation() {
+    indexTestUnit(r'''
+test(a, b) {
+  print(a);
+  print(b);
+}
+main() {
+  {
+    test(1, 2);
+  }
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  {
+    print(1);
+    print(2);
+  }
+}
+''');
+  }
+
+  test_function_noReturn_voidReturnType() {
+    indexTestUnit(r'''
+void test(a, b) {
+  print(a + b);
+}
+main() {
+  test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print(1 + 2);
+}
+''');
+  }
+
+  test_function_notStatement_oneStatement_assign() {
+    indexTestUnit(r'''
+test(int p) {
+  print(p * 2);
+}
+main() {
+  var v;
+  v = test(0);
+}
+''');
+    _createRefactoring('test(int p)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var v;
+  v = (int p) {
+    print(p * 2);
+  }(0);
+}
+''');
+  }
+
+  test_function_notStatement_oneStatement_variableDeclaration() {
+    indexTestUnit(r'''
+test(int p) {
+  print(p * 2);
+}
+main() {
+  var v = test(0);
+}
+''');
+    _createRefactoring('test(int p)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var v = (int p) {
+    print(p * 2);
+  }(0);
+}
+''');
+  }
+
+  test_function_notStatement_severalStatements() {
+    indexTestUnit(r'''
+test(int p) {
+  print(p);
+  print(p * 2);
+}
+main() {
+  var v = test(0);
+}
+''');
+    _createRefactoring('test(int p)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var v = (int p) {
+    print(p);
+    print(p * 2);
+  }(0);
+}
+''');
+  }
+
+  test_function_notStatement_zeroStatements() {
+    indexTestUnit(r'''
+test(int p) {
+}
+main() {
+  var v = test(0);
+}
+''');
+    _createRefactoring('test(int p)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var v = (int p) {
+  }(0);
+}
+''');
+  }
+
+  test_function_singleStatement() {
+    indexTestUnit(r'''
+var topLevelField = 0;
+test() {
+  print(topLevelField);
+}
+main() {
+  test();
+}
+''');
+    _createRefactoring('test() {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+var topLevelField = 0;
+main() {
+  print(topLevelField);
+}
+''');
+  }
+
+  test_initialMode_all() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate state
+    return refactoring.checkInitialConditions().then((_) {
+      expect(refactoring.deleteSource, true);
+      expect(refactoring.inlineAll, true);
+    });
+  }
+
+  test_initialMode_single() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res1 = test(1, 2);
+  var res2 = test(10, 20);
+}
+''');
+    _createRefactoring('test(1, 2)');
+    deleteSource = false;
+    // validate state
+    return refactoring.checkInitialConditions().then((_) {
+      expect(refactoring.deleteSource, false);
+      expect(refactoring.inlineAll, false);
+    });
+  }
+
+  test_method_emptyBody() {
+    indexTestUnit(r'''
+abstract class A {
+  test();
+}
+main(A a) {
+  print(a.test());
+}
+''');
+    _createRefactoring('test();');
+    // error
+    return _assertConditionsFatal('Cannot inline method without body.');
+  }
+
+  test_method_fieldInstance() {
+    indexTestUnit(r'''
+class A {
+  var fA;
+}
+class B extends A {
+  var fB;
+  test() {
+    print(fA);
+    print(fB);
+    print(this.fA);
+    print(this.fB);
+  }
+}
+main() {
+  B b = new B();
+  b.test();
+}
+''');
+    _createRefactoring('test() {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  var fA;
+}
+class B extends A {
+  var fB;
+}
+main() {
+  B b = new B();
+  print(b.fA);
+  print(b.fB);
+  print(b.fA);
+  print(b.fB);
+}
+''');
+  }
+
+  test_method_fieldStatic() {
+    indexTestUnit(r'''
+class A {
+  static var FA = 1;
+}
+class B extends A {
+  static var FB = 2;
+  test() {
+    print(FA);
+    print(FB);
+    print(A.FA);
+    print(B.FB);
+  }
+}
+main() {
+  B b = new B();
+  b.test();
+}
+''');
+    _createRefactoring('test() {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  static var FA = 1;
+}
+class B extends A {
+  static var FB = 2;
+}
+main() {
+  B b = new B();
+  print(A.FA);
+  print(B.FB);
+  print(A.FA);
+  print(B.FB);
+}
+''');
+  }
+
+  test_method_fieldStatic_sameClass() {
+    indexTestUnit(r'''
+class A {
+  static var F = 1;
+  foo() {
+    test();
+  }
+  test() {
+    print(A.F);
+  }
+}
+''');
+    _createRefactoring('test() {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  static var F = 1;
+  foo() {
+    print(A.F);
+  }
+}
+''');
+  }
+
+  test_method_singleStatement() {
+    indexTestUnit(r'''
+class A {
+  test() {
+    print(0);
+  }
+  foo() {
+    test();
+  }
+}
+''');
+    _createRefactoring('test() {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  foo() {
+    print(0);
+  }
+}
+''');
+  }
+
+  test_method_unqualifiedUnvocation() {
+    indexTestUnit(r'''
+class A {
+  test(a, b) {
+    print(a);
+    print(b);
+    return a + b;
+  }
+  foo() {
+    var v = test(1, 2);
+  }
+}
+''');
+    _createRefactoring('test(a, b) {');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+class A {
+  foo() {
+    print(1);
+    print(2);
+    var v = 1 + 2;
+  }
+}
+''');
+  }
+
+  test_namedArgument_inBody() {
+    indexTestUnit(r'''
+fa(pa) => fb(pb: true);
+fb({pb: false}) {}
+main() {
+  fa(null);
+}
+''');
+    _createRefactoring('fa(null)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+fa(pa) => fb(pb: true);
+fb({pb: false}) {}
+main() {
+  fb(pb: true);
+}
+''');
+  }
+
+  test_namedArguments() {
+    indexTestUnit(r'''
+test({a: 0, b: 2}) {
+  print(a + b);
+}
+main() {
+  test(a: 10, b: 20);
+  test(b: 20, a: 10);
+}
+''');
+    _createRefactoring('test({');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print(10 + 20);
+  print(10 + 20);
+}
+''');
+  }
+
+  test_reference_noStatement() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a || b;
+}
+foo(p1, p2, p3) => p1 && test(p2, p3);
+bar() => {
+  'name' : baz(test)
+};
+baz(x) {}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+foo(p1, p2, p3) => p1 && (p2 || p3);
+bar() => {
+  'name' : baz((a, b) {
+    return a || b;
+  })
+};
+baz(x) {}
+''');
+  }
+
+  test_reference_toLocal() {
+    indexTestUnit(r'''
+main() {
+  test(a, b) {
+    print(a);
+    print(b);
+  }
+  print(test);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print((a, b) {
+    print(a);
+    print(b);
+  });
+}
+''');
+  }
+
+  test_reference_toTopLevel() {
+    indexTestUnit(r'''
+test(a, b) {
+  print(a);
+  print(b);
+}
+main() {
+  print(test);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  print((a, b) {
+    print(a);
+    print(b);
+  });
+}
+''');
+  }
+
+  test_singleExpression_oneUsage() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var res = 1 + 2;
+}
+''');
+  }
+
+  test_singleExpression_oneUsage_keepMethod() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res = test(1, 2);
+}
+''');
+    _createRefactoring('test(a, b)');
+    deleteSource = false;
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res = 1 + 2;
+}
+''');
+  }
+
+  test_singleExpression_twoUsages() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res1 = test(1, 2);
+  var res2 = test(10, 20);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var res1 = 1 + 2;
+  var res2 = 10 + 20;
+}
+''');
+  }
+
+  test_singleExpression_twoUsages_inlineOne() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res1 = test(1, 2);
+  var res2 = test(10, 20);
+}
+''');
+    _createRefactoring('test(1, 2)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+test(a, b) {
+  return a + b;
+}
+main() {
+  var res1 = 1 + 2;
+  var res2 = test(10, 20);
+}
+''');
+  }
+
+  test_singleExpression_wrapIntoParenthesized_alreadyInMethod() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a * (b);
+}
+main() {
+  var res = test(1, 2 + 3);
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var res = 1 * (2 + 3);
+}
+''');
+  }
+
+  test_singleExpression_wrapIntoParenthesized_asNeeded() {
+    indexTestUnit(r'''
+test(a, b) {
+  return a * b;
+}
+main() {
+  var res1 = test(1, 2 + 3);
+  var res2 = test(1, (2 + 3));
+}
+''');
+    _createRefactoring('test(a, b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main() {
+  var res1 = 1 * (2 + 3);
+  var res2 = 1 * (2 + 3);
+}
+''');
+  }
+
+  test_singleExpression_wrapIntoParenthesized_bools() {
+    indexTestUnit(r'''
+test(bool a, bool b) {
+  return a || b;
+}
+main(bool p, bool p2, bool p3) {
+  var res1 = p && test(p2, p3);
+  var res2 = p || test(p2, p3);
+}
+''');
+    _createRefactoring('test(bool a, bool b)');
+    // validate change
+    return _assertSuccessfulRefactoring(r'''
+main(bool p, bool p2, bool p3) {
+  var res1 = p && (p2 || p3);
+  var res2 = p || p2 || p3;
+}
+''');
+  }
+
+  Future _assertConditionsError(String message) {
+    return refactoring.checkAllConditions().then((status) {
+      assertRefactoringStatus(
+          status,
+          RefactoringProblemSeverity.ERROR,
+          expectedMessage: message);
+    });
+  }
+
+  Future _assertConditionsFatal(String message) {
+    return refactoring.checkAllConditions().then((status) {
+      assertRefactoringStatus(
+          status,
+          RefactoringProblemSeverity.FATAL,
+          expectedMessage: message);
+    });
+  }
+
+  Future _assertSuccessfulRefactoring(String expectedCode) {
+    return refactoring.checkInitialConditions().then((status) {
+      assertRefactoringStatusOK(status);
+      if (deleteSource != null) {
+        refactoring.deleteSource = deleteSource;
+      }
+      if (inlineAll != null) {
+        refactoring.inlineAll = inlineAll;
+      }
+      return refactoring.checkFinalConditions().then((status) {
+        assertRefactoringStatusOK(status);
+        return refactoring.createChange().then((SourceChange change) {
+          this.refactoringChange = change;
+          assertTestChangeResult(expectedCode);
+        });
+      });
+    });
+  }
+
+  void _createRefactoring(String search) {
+    int offset = findOffset(search);
+    refactoring = new InlineMethodRefactoring(searchEngine, testUnit, offset);
+  }
+}