adopted tests from the css-modules-loader-core to the require-hook

Author: mightyaleksey

test/test-hook.js

@@ -0,0 +1,46 @@
+'use strict';
+
+import '../src';
+import fs from 'fs'
+import path from 'path'
+import { equal } from 'assert';
+
+const pipelines = {
+  'test-cases': undefined,
+  'cssi': []
+}
+
+Object.keys(pipelines).forEach(dirname => {
+  describe(dirname, () => {
+    let testDir = path.join(__dirname, dirname);
+
+    fs.readdirSync(testDir).forEach(testCase => {
+      if (fs.existsSync(path.join(testDir, testCase, 'source.css'))) {
+        it('should ' + testCase.replace(/-/g, ' '), done => {
+          let expectedTokens = JSON.parse(fs.readFileSync(path.join(testDir, testCase, 'expected.json'), 'utf-8'));
+          let tokens = require(`${testDir}/${testCase}/source.css`);
+
+          equal(JSON.stringify(tokens), JSON.stringify(expectedTokens));
+        });
+      }
+    });
+  });
+});
+
+// special case for testing multiple sources
+describe( 'multiple sources', () => {
+  let testDir = path.join(__dirname, 'test-cases');
+  let testCase = 'multiple-sources';
+  let dirname = 'test-cases';
+
+  if (fs.existsSync(path.join(testDir, testCase, 'source1.css'))) {
+    it('should ' + testCase.replace(/-/g, ' '), done => {
+      let expectedTokens = JSON.parse(fs.readFileSync(path.join(testDir, testCase, 'expected.json'), 'utf-8'));
+      let tokens1 = require(`${testDir}/${testCase}/source1.css`);
+      let tokens2 = require(`${testDir}/${testCase}/source2.css`);
+      let tokens = Object.assign({}, tokens1, tokens2);
+
+      equal(JSON.stringify(tokens), JSON.stringify(expectedTokens));
+    });
+  }
+});