test: add better error tests

test/err.spec.ts

@@ -1,31 +1,41 @@
 /* global it, expect, describe */
 
-import { ParseErr } from "../src/err";
+import path from "path";
+import { Eta } from "../src/index";
 
 describe("ParseErr", () => {
-  it("error throws correctly", () => {
+  const eta = new Eta();
+
+  it("error while parsing", () => {
     try {
-      ParseErr("Something Unexpected Happened!", "template {{", 9);
+      eta.renderString("template <%", {});
     } catch (ex) {
       expect((ex as Error).name).toBe("Eta Error");
-      expect((ex as Error).message).toBe(`Something Unexpected Happened! at line 1 col 10:
+      expect((ex as Error).message).toBe(`unclosed tag at line 1 col 10:
 
-  template {{
+  template <%
            ^`);
       expect(ex instanceof Error).toBe(true);
     }
   });
-  it("error throws without Object.setPrototypeOf", () => {
-    Object.defineProperty(Object, "setPrototypeOf", { value: undefined });
+});
+
+describe("RuntimeErr", () => {
+  const eta = new Eta({ debug: true, views: path.join(__dirname, "templates") });
+
+  const errorFilepath = path.join(__dirname, "templates/runtime-error.eta");
+
+  it("error throws correctly", () => {
     try {
-      ParseErr("Something Unexpected Happened!", "template {{", 9);
+      eta.render("./runtime-error", {});
     } catch (ex) {
-      expect((ex as Error).name).toBe("Eta Error");
-      expect((ex as Error).message).toBe(`Something Unexpected Happened! at line 1 col 10:
+      expect((ex as Error).name).toBe("ReferenceError");
+      expect((ex as Error).message).toBe(`${errorFilepath}:2
+    1| 
+ >> 2| <%= undefinedVariable %>
+    3| Lorem Ipsum
 
-  template {{
-           ^`);
-      expect(ex instanceof Error).toBe(true);
+undefinedVariable is not defined`);
     }
   });
 });

test/render.spec.ts

@@ -34,6 +34,22 @@ describe("render caching", () => {
 
     expect(eta.templatesSync.get("@template1")).toBeTruthy();
   });
+
+  it("throws if template doesn't exist", () => {
+    expect(() => {
+      eta.render("@should-error", {});
+    }).toThrow(/Failed to get template/);
+  });
+});
+
+describe("render caching w/ files", () => {
+  const eta = new Eta({ cache: true, views: path.join(__dirname, "templates") });
+
+  eta.loadTemplate(path.join(__dirname, "templates/nonexistent.eta"), "Hi <%=it.name%>");
+
+  it("Template files cache", () => {
+    expect(eta.render("./nonexistent", { name: "Ada Lovelace" })).toEqual("Hi Ada Lovelace");
+  });
 });
 
 describe("useWith", () => {

test/templates/runtime-error.eta

@@ -0,0 +1,3 @@
+
+<%= undefinedVariable %>
+Lorem Ipsum