Ensure output chunk filename is reset

Author: jouni-kantola

test/plugin-reset-chunk-filename-test.js

@@ -0,0 +1,59 @@
+import test from "ava";
+
+import ChunkManifestPlugin from "../src/chunk-manifest-webpack-plugin";
+
+test.cb("generate asset for chunk manifest", t => {
+  const chunkFilename = "[filename]";
+
+  const chunk = {
+    id: 1,
+    hasRuntime: () => true,
+    chunks: []
+  };
+
+  const thisCompilationPluginEvent = (compilationEvent, ensure) => {
+    if (compilationEvent === "require-ensure") {
+      const outputOptions = { chunkFilename };
+
+      ensure.apply({ outputOptions }, [undefined, chunk]);
+
+      t.is(outputOptions.chunkFilename, "__CHUNK_MANIFEST__");
+    }
+  };
+
+  const compilationPluginEvent = (compilationEvent, ensure) => {
+    if (compilationEvent === "require-ensure") {
+      const outputOptions = { chunkFilename: "overwrite-this" };
+
+      ensure.apply({ outputOptions }, ["", chunk]);
+
+      t.is(outputOptions.chunkFilename, chunkFilename);
+      t.end();
+    }
+  };
+
+  const pluginEvent = (event, compile) => {
+    const compilation = {
+      mainTemplate: {
+        plugin: undefined
+      },
+      assets: {}
+    };
+
+    if (event === "this-compilation") {
+      compilation.mainTemplate.plugin = thisCompilationPluginEvent;
+      compile(compilation);
+    }
+
+    if (event === "compilation") {
+      compilation.mainTemplate.plugin = compilationPluginEvent;
+      compile(compilation);
+    }
+  };
+
+  const fakeCompiler = { plugin: pluginEvent };
+
+  const plugin = new ChunkManifestPlugin();
+
+  plugin.apply(fakeCompiler);
+});