Merge pull request #4139 from hoanhtien/documentHighlights

Expose document highlighting to server.

tests/cases/fourslash/fourslash.ts

@@ -421,6 +421,14 @@ module FourSlashInterface {
             FourSlash.currentTestState.verifyOccurrencesAtPositionListCount(expectedCount);
         }
 
+        public documentHighlightsAtPositionContains(range: Range, fileNamesToSearch: string[], kind?: string) {
+            FourSlash.currentTestState.verifyDocumentHighlightsAtPositionListContains(range.fileName, range.start, range.end, fileNamesToSearch, kind);
+        }
+
+        public documentHighlightsAtPositionCount(expectedCount: number, fileNamesToSearch: string[]) {
+            FourSlash.currentTestState.verifyDocumentHighlightsAtPositionListCount(expectedCount, fileNamesToSearch);
+        }
+
         public completionEntryDetailIs(entryName: string, text: string, documentation?: string, kind?: string) {
             FourSlash.currentTestState.verifyCompletionEntryDetails(entryName, text, documentation, kind);
         }

tests/cases/fourslash/server/documentHighlights01.ts

@@ -0,0 +1,18 @@
+/// <reference path="../fourslash.ts"/>
+
+// @Filename: a.ts
+////function [|f|](x: typeof [|f|]) {
+////    [|f|]([|f|]);
+////}
+
+let ranges = test.ranges();
+
+for (let r of ranges) {
+    goTo.position(r.start);
+    verify.documentHighlightsAtPositionCount(ranges.length, ["a.ts"]);
+
+    for (let range of ranges) {
+        verify.documentHighlightsAtPositionContains(range, ["a.ts"]);
+    }
+}
+

tests/cases/fourslash/server/documentHighlights02.ts

@@ -0,0 +1,35 @@
+/// <reference path="../fourslash.ts"/>
+
+// @Filename: a.ts
+////function [|foo|] () {
+////	return 1;
+////}
+////[|foo|]();
+
+// @Filename: b.ts
+/////// <reference path="a.ts"/>
+////foo();
+
+// open two files
+goTo.file("a.ts");
+goTo.file("b.ts");
+
+let ranges = test.ranges();
+
+for (let i = 0; i < ranges.length; ++i) {
+	let r = ranges[i];
+
+	if (i < 2) {
+		goTo.file("a.ts");
+	}
+	else {
+		goTo.file("b.ts");
+	}
+
+    goTo.position(r.start);
+    verify.documentHighlightsAtPositionCount(3, ["a.ts", "b.ts"]);
+
+    for (let range of ranges) {
+        verify.documentHighlightsAtPositionContains(range, ["a.ts", "b.ts"]);
+    }
+}