More enhancements to ChangeBuilder

pkg/analysis_server/test/src/utilities/change_builder_core_test.dart

Index: pkg/analysis_server/test/src/utilities/change_builder_core_test.dart
diff --git a/pkg/analysis_server/test/src/utilities/change_builder_core_test.dart b/pkg/analysis_server/test/src/utilities/change_builder_core_test.dart
index f2fbf7d90440049a9057d785cb16a7e7ffd7bb5d..7271746fad0bc30a12481563276a639c403a95fc 100644
--- a/pkg/analysis_server/test/src/utilities/change_builder_core_test.dart
+++ b/pkg/analysis_server/test/src/utilities/change_builder_core_test.dart
@@ -38,6 +38,13 @@ class ChangeBuilderImplTest {
     expect(identical(builder.getLinkedEditGroup('a'), group), isTrue);
   }
 
+  void test_setSelection() {
+    Position position = new Position('test.dart', 3);
+    ChangeBuilderImpl builder = new ChangeBuilderImpl();
+    builder.setSelection(position);
+    expect(builder.sourceChange.selection, position);
+  }
+
   void test_sourceChange_noChanges() {
     ChangeBuilderImpl builder = new ChangeBuilderImpl();
     SourceChange sourceChange = builder.sourceChange;
@@ -102,6 +109,16 @@ class EditBuilderImplTest {
     });
   }
 
+  test_selectHere() async {
+    ChangeBuilderImpl builder = new ChangeBuilderImpl();
+    await builder.addFileEdit(path, 0, (FileEditBuilder builder) {
+      builder.addInsertion(10, (EditBuilder builder) {
+        builder.selectHere();
+      });
+    });
+    expect(builder.sourceChange.selection.offset, 10);
+  }
+
   test_write() async {
     ChangeBuilderImpl builder = new ChangeBuilderImpl();
     int timeStamp = 93;
@@ -199,6 +216,20 @@ class EditBuilderImplTest {
 class FileEditBuilderImplTest {
   String path = '/test.dart';
 
+  test_addDeletion() async {
+    int offset = 23;
+    int length = 7;
+    ChangeBuilderImpl builder = new ChangeBuilderImpl();
+    await builder.addFileEdit(path, 0, (FileEditBuilder builder) {
+      builder.addDeletion(offset, length);
+    });
+    List<SourceEdit> edits = builder.sourceChange.edits[0].edits;
+    expect(edits, hasLength(1));
+    expect(edits[0].offset, offset);
+    expect(edits[0].length, length);
+    expect(edits[0].replacement, isEmpty);
+  }
+
   test_addInsertion() async {
     ChangeBuilderImpl builder = new ChangeBuilderImpl();
     await builder.addFileEdit(path, 0, (FileEditBuilder builder) {
@@ -233,6 +264,35 @@ class FileEditBuilderImplTest {
     });
   }
 
+  test_addSimpleInsertion() async {
+    int offset = 23;
+    String text = 'xyz';
+    ChangeBuilderImpl builder = new ChangeBuilderImpl();
+    await builder.addFileEdit(path, 0, (FileEditBuilder builder) {
+      builder.addSimpleInsertion(offset, text);
+    });
+    List<SourceEdit> edits = builder.sourceChange.edits[0].edits;
+    expect(edits, hasLength(1));
+    expect(edits[0].offset, offset);
+    expect(edits[0].length, 0);
+    expect(edits[0].replacement, text);
+  }
+
+  test_addSimpleReplacement() async {
+    int offset = 23;
+    int length = 7;
+    String text = 'xyz';
+    ChangeBuilderImpl builder = new ChangeBuilderImpl();
+    await builder.addFileEdit(path, 0, (FileEditBuilder builder) {
+      builder.addSimpleReplacement(offset, length, text);
+    });
+    List<SourceEdit> edits = builder.sourceChange.edits[0].edits;
+    expect(edits, hasLength(1));
+    expect(edits[0].offset, offset);
+    expect(edits[0].length, length);
+    expect(edits[0].replacement, text);
+  }
+
   test_createEditBuilder() async {
     ChangeBuilderImpl builder = new ChangeBuilderImpl();
     await builder.addFileEdit(path, 0, (FileEditBuilder builder) {