test: Add LanguageServiceHostProxy test

src/linter/ui5Types/LanguageServiceHostProxy.ts

@@ -57,7 +57,7 @@ class EmptyLanguageServiceHost implements ts.LanguageServiceHost {
 	}
 
 	getScriptVersion() {
-		return "";
+		return "0";
 	}
 
 	getScriptSnapshot() {
@@ -69,7 +69,7 @@ class EmptyLanguageServiceHost implements ts.LanguageServiceHost {
 	}
 
 	readFile() {
-		return "";
+		return undefined;
 	}
 
 	getCurrentDirectory() {

test/lib/linter/ui5Types/LanguageServiceHostProxy.ts

@@ -0,0 +1,34 @@
+import test from "ava";
+import LanguageServiceHostProxy from "../../../../src/linter/ui5Types/LanguageServiceHostProxy.js";
+
+test("LanguageServiceHostProxy default implementation - getCompilationSettings", (t) => {
+	t.deepEqual(new LanguageServiceHostProxy().getCompilationSettings(), {});
+});
+
+test("LanguageServiceHostProxy default implementation - getScriptFileNames", (t) => {
+	t.deepEqual(new LanguageServiceHostProxy().getScriptFileNames(), []);
+});
+
+test("LanguageServiceHostProxy default implementation - getScriptVersion", (t) => {
+	t.is(new LanguageServiceHostProxy().getScriptVersion("/foo"), "0");
+});
+
+test("LanguageServiceHostProxy default implementation - getScriptSnapshot", (t) => {
+	t.is(new LanguageServiceHostProxy().getScriptSnapshot("/foo"), undefined);
+});
+
+test("LanguageServiceHostProxy default implementation - fileExists", (t) => {
+	t.is(new LanguageServiceHostProxy().fileExists("/foo"), false);
+});
+
+test("LanguageServiceHostProxy default implementation - readFile", (t) => {
+	t.is(new LanguageServiceHostProxy().readFile("/foo"), undefined);
+});
+
+test("LanguageServiceHostProxy default implementation - getDefaultLibFileName", (t) => {
+	t.is(new LanguageServiceHostProxy().getDefaultLibFileName({}), "lib.d.ts");
+});
+
+test("LanguageServiceHostProxy default implementation - getCurrentDirectory", (t) => {
+	t.is(new LanguageServiceHostProxy().getCurrentDirectory(), "/");
+});