add more tests

src/vs/workbench/test/common/api/extHostApiCommands.test.ts

@@ -244,29 +244,51 @@ suite('ExtHostLanguageFeatureCommands', function() {
 			provideCompletionItems(doc, pos): any {
 				let a = new types.CompletionItem('item1');
 				let b = new types.CompletionItem('item2');
-				b.textEdit = types.TextEdit.replace(new types.Range(0, 0, 0, 4), 'foo');
-				return [a, b];
+				b.textEdit = types.TextEdit.replace(new types.Range(0, 4, 0, 8), 'foo'); // overwite after
+				let c = new types.CompletionItem('item3');
+				c.textEdit = types.TextEdit.replace(new types.Range(0, 1, 0, 6), 'foobar'); // overwite before & after
+				let d = new types.CompletionItem('item4');
+				d.textEdit = types.TextEdit.replace(new types.Range(0, 1, 0, 4), ''); // overwite before
+				return [a, b, c, d];
 			}
 		}, []));
 
 		threadService.sync().then(() => {
-			commands.executeCommand<vscode.CompletionItem[]>('vscode.executeCompletionItemProvider', model.getAssociatedResource(), new types.Position(0, 0)).then(values => {
-				assert.equal(values.length, 2);
-				let [first, second] = values;
-				assert.equal(first.label, 'item1');
-				assert.equal(first.textEdit.newText, 'item1');
-				assert.equal(first.textEdit.range.start.line, 0);
-				assert.equal(first.textEdit.range.start.character, 0);
-				assert.equal(first.textEdit.range.end.line, 0);
-				assert.equal(first.textEdit.range.end.character, 0);
-
-				assert.equal(second.label, 'item2');
-				assert.equal(second.textEdit.newText, 'foo');
-				assert.equal(second.textEdit.range.start.line, 0);
-				assert.equal(second.textEdit.range.start.character, 0);
-				assert.equal(second.textEdit.range.end.line, 0);
-				assert.equal(second.textEdit.range.end.character, 4);
-				done();
+			commands.executeCommand<vscode.CompletionItem[]>('vscode.executeCompletionItemProvider', model.getAssociatedResource(), new types.Position(0, 4)).then(values => {
+				try {
+					assert.equal(values.length, 4);
+					let [first, second, third, forth] = values;
+					assert.equal(first.label, 'item1');
+					assert.equal(first.textEdit.newText, 'item1');
+					assert.equal(first.textEdit.range.start.line, 0);
+					assert.equal(first.textEdit.range.start.character, 0);
+					assert.equal(first.textEdit.range.end.line, 0);
+					assert.equal(first.textEdit.range.end.character, 4);
+
+					assert.equal(second.label, 'item2');
+					assert.equal(second.textEdit.newText, 'foo');
+					assert.equal(second.textEdit.range.start.line, 0);
+					assert.equal(second.textEdit.range.start.character, 4);
+					assert.equal(second.textEdit.range.end.line, 0);
+					assert.equal(second.textEdit.range.end.character, 8);
+
+					assert.equal(third.label, 'item3');
+					assert.equal(third.textEdit.newText, 'foobar');
+					assert.equal(third.textEdit.range.start.line, 0);
+					assert.equal(third.textEdit.range.start.character, 1);
+					assert.equal(third.textEdit.range.end.line, 0);
+					assert.equal(third.textEdit.range.end.character, 6);
+
+					assert.equal(forth.label, 'item4');
+					assert.equal(forth.textEdit.newText, '');
+					assert.equal(forth.textEdit.range.start.line, 0);
+					assert.equal(forth.textEdit.range.start.character, 1);
+					assert.equal(forth.textEdit.range.end.line, 0);
+					assert.equal(forth.textEdit.range.end.character, 4);
+					done();
+				} catch (e) {
+					done(e);
+				}
 			});
 		});
 	});