[Web] add missing function test

Siv3D/lib/Web/jslib/Siv3D.pre.js

@@ -33,10 +33,5 @@ Please use another browser that supports WebAssembly.")
         {
             onAbort(e);
         }
-        // Test stub: throw JSException instead of abort.
-        // else if (typeof e === "string" && e !== "" && e !== "native code called abort()")
-        // {
-        //     Module["siv3dSetThrowJSException"](e);
-        // }
     };
 })();

Test/Siv3DTest.js

@@ -1,67 +1,16 @@
-//
-// Mock implementation for Node.js
-//
-
-Module.preRun = [
-  function () 
+// Test stub: throw JSException instead of abort.
+Module["onAbort"] = function(e) { 
+  if ((e !== "" && e !== "native code called abort()"))
   {
-    FS.mkdir('/test');
-    FS.mount(NODEFS, { root: '../../../Test/test' }, '/test');
-
-    FS.mkdir('/resources');
-    FS.mount(NODEFS, { root: '../../App/resources' }, '/resources');
-
-    //
-    // Mock Implementations 
-    //
-    global.navigator = {
-      getGamepads() { return []; }
-    };
-
-    global.window = {
-      alert(text) { console.error(text); },
-      addEventListener() {},
-      removeEventListener() {},
-      speechSynthesis: {
-        getVoices() { return []; }
-      },
-      screen: {}
-    };
-
-    global.document = {
-      createElement() { 
-        return { 
-          style: {},
-          addEventListener() {},
-          removeEventListener() {},
-        };
-      }, 
-    };
-
-    Module.canvas = {
-      style: {
-        removeProperty() {}
-      },
-      parentNode: {
-        prepend() {}
-      },
-      addEventListener() {},
-      removeEventListener() {},
-    };
-
-    global.FileReader = class {
-      constructor() {}
-    };
-
-    global.Notification = {
-      permission: "granted",
-      requestPermission() {}
-    };
-
-    global.XMLHttpRequest = require("xmlhttprequest").XMLHttpRequest;
+      Module["siv3dSetThrowJSException"](e);
+  }
 
-    global.requestAnimationFrame = function(callback) {
-      setTimeout(callback, 16);
-    };
+  if (e === -1) {
+    // FIXME: -1 is thrown when unresolved function is called in emscripten 3.1.20.
+    // We should migrate to emscripten 3.1.53, in which unresolved symbol report will be thrown.
+    // 
+    // abort(-1); // emscripten 3.1.20, not user friendly abort
+    // abort("missing function: <some function name>"); // emscripten 3.1.53
+    Module["siv3dSetThrowJSException"](e.toString());
   }
-];
+};

Test/Siv3DTest_DLL.cpp

@@ -21,6 +21,18 @@ TEST_CASE("DLL")
 		REQUIRE_THROWS_MATCHES(DLL::Load(U"libsub.so"), s3d::EngineError, EngineErrorMatcher(U"To use dlopen, you need enable dynamic linking, see https://github.com/emscripten-core/emscripten/wiki/Linking"));
 	}
 
+	SECTION("Undefined Symbol")
+	{
+		extern void NonExistentFunction();
+
+		// FIXME: -1 is thrown when unresolved function is called in emscripten 3.1.20.
+		// We should migrate to emscripten 3.1.53, in which unresolved symbol report will be thrown.
+		// 
+		// abort(-1); // emscripten 3.1.20, not user friendly abort
+		// abort("missing function: _Z19NonExistentFunctionv"); // emscripten 3.1.53
+		REQUIRE_THROWS_MATCHES(NonExistentFunction(), s3d::EngineError, EngineErrorMatcher(U"-1"));
+	}
+
 # else
 
 	SECTION("Existent Module")

Web/CMakeLists.txt

@@ -1614,6 +1614,7 @@ target_link_options(Siv3DTest PRIVATE
   -g2
   -fexceptions
   -sASYNCIFY=1
+  --pre-js=${PROJECT_SOURCE_DIR}/../Test/Siv3DTest.js
   --preload-file=${PROJECT_SOURCE_DIR}/../Test/test@/test
   --preload-file=${PROJECT_SOURCE_DIR}/App/resources@/resources
   --preload-file=${PROJECT_SOURCE_DIR}/App/example@/example
@@ -1645,6 +1646,7 @@ target_link_options(Siv3DUnitTest PRIVATE
   --emrun
   -fexceptions
   -sASYNCIFY=1
+  --pre-js=${PROJECT_SOURCE_DIR}/../Test/Siv3DTest.js
   --preload-file=${PROJECT_SOURCE_DIR}/../Test/test@/test
   --preload-file=${PROJECT_SOURCE_DIR}/App/resources@/resources
   --preload-file=${PROJECT_SOURCE_DIR}/App/example@/example