Drop/keep asset

Author: jouni-kantola

test/plugin-drop-asset-test.js

@@ -0,0 +1,65 @@
+import test from "ava";
+import InlineChunkManifestHtmlWebpackPlugin from "../src/";
+
+const manifestFilename = "a.manifest";
+const manifestFileContent = "source-content";
+const manifestVariable = "manifest-variable";
+
+test.cb("drop asset", t => {
+  isDropped(true, asset => {
+    t.is(asset, undefined);
+    t.end();
+  });
+});
+
+test.cb("keep asset", t => {
+  isDropped(false, asset => {
+    t.is(asset.source(), manifestFileContent);
+    t.end();
+  });
+});
+
+function isDropped(dropAsset, callback) {
+  const assets = {};
+  assets[manifestFilename] = {
+    source: () => manifestFileContent
+  };
+
+  const compilationPluginEvent = (compilationEvent, alterAssets) => {
+    if (compilationEvent === "html-webpack-plugin-alter-asset-tags") {
+      const htmlPluginData = {
+        head: []
+      };
+
+      alterAssets(htmlPluginData, (_, result) => {
+        const asset = assets[manifestFilename];
+        callback(asset);
+      });
+    }
+  };
+
+  const pluginEvent = (compilerEvent, compile) => {
+    const compilation = {
+      plugin: compilationPluginEvent,
+      assets: assets
+    };
+
+    compile(compilation);
+  };
+
+  const fakeCompiler = { plugin: pluginEvent };
+
+  const plugin = new InlineChunkManifestHtmlWebpackPlugin({
+    filename: manifestFilename,
+    manifestVariable: manifestVariable,
+    dropAsset: dropAsset
+  });
+
+  plugin.plugins = [
+    {
+      apply: () => {}
+    }
+  ];
+
+  plugin.apply(fakeCompiler);
+}