Merge branch 'master' into fix-ls-gettypeatlocation-for-as-const

microsoft · weswigham · Feb 12, 2020 · Feb 11, 2020 · Feb 11, 2020 · Feb 11, 2020
commit a85b27c0c4addcf98acfe4bde1afe08f3e13138e
diff --git a/src/testRunner/unittests/programApi.ts b/src/testRunner/unittests/programApi.ts
@@ -179,7 +179,6 @@ namespace ts {
         });
     });
 
-
     describe("unittests:: programApi:: Program.getDiagnosticsProducingTypeChecker / Program.getSemanticDiagnostics", () => {
         it("does not produce errors on `as const` it would not normally produce on the command line", () => {
             const main = new documents.TextDocument("/main.ts", "0 as const");
@@ -192,5 +191,17 @@ namespace ts {
             const diag = program.getSemanticDiagnostics();
             assert.isEmpty(diag);
         });
+        it("getSymbolAtLocation does not cause additional error to be added on module resolution failure", () => {
+            const main = new documents.TextDocument("/main.ts", "import \"./module\";");
+            const mod = new documents.TextDocument("/module.d.ts", "declare const foo: any;");
+
+            const fs = vfs.createFromFileSystem(Harness.IO, /*ignoreCase*/ false, { documents: [main, mod], cwd: "/" });
+            const program = createProgram(["/main.ts"], {}, new fakes.CompilerHost(fs, { newLine: NewLineKind.LineFeed }));
+
+            const sourceFile = program.getSourceFile("main.ts")!;
+            const typeChecker = program.getDiagnosticsProducingTypeChecker();
+            typeChecker.getSymbolAtLocation((sourceFile.statements[0] as ImportDeclaration).moduleSpecifier);
+            assert.isEmpty(program.getSemanticDiagnostics());
+        });
     });
 }