test for environment

Author: Alexey Litvinov

lib/index.js

@@ -108,6 +108,14 @@ module.exports = function setupHook({
 
     tokens = lazyResult.root.tokens;
 
+    if (process.env.NODE_ENV !== 'development') {
+      // updating cache
+      tokensByFile[filename] = tokens;
+    } else {
+      // clearing cache in development mode
+      delete require.cache[filename];
+    }
+
     if (processCss) {
       processCss(lazyResult.css, filename);
     }

test/env/fixture/oceanic.css

@@ -0,0 +1,4 @@
+.color
+{
+  background: #1e2a35;
+}

test/env/node_env.js

@@ -0,0 +1,62 @@
+const detachHook = require('../sugar').detachHook;
+const dropCache = require('../sugar').dropCache;
+const resolve = require('path').resolve;
+const writeFileSync = require('fs').writeFileSync;
+
+const destination = resolve(__dirname, './fixture/oceanic.css');
+const source1 = `.color\n{\n  background: #1e2a35;\n}\n`;
+const source2 = `.awesome-color\n{\n  background: #1e2a35;\n}\n`;
+
+suite('env.NODE_ENV', () => {
+  suite('in the development mode', () => {
+    test('should get tokens from fs, not from cache', () => {
+      const tokens = require('./fixture/oceanic.css');
+
+      assert.deepEqual(tokens, {
+        'awesome-color': '_test_env_fixture_oceanic__awesome-color',
+      });
+    });
+
+    setup(() => {
+      process.env.NODE_ENV = 'development';
+      hook({});
+      writeFile(source1);
+      require('./fixture/oceanic.css');
+      writeFile(source2);
+    });
+
+    teardown(() => {
+      process.env.NODE_ENV = '';
+      writeFile(source1);
+      detachHook('.css');
+      dropCache('./env/fixture/oceanic.css');
+    });
+  });
+
+  suite('not in the development mode', () => {
+    test('should get tokens from cache', () => {
+      const tokens = require('./fixture/oceanic.css');
+
+      assert.deepEqual(tokens, {
+        'color': '_test_env_fixture_oceanic__color',
+      });
+    });
+
+    setup(() => {
+      hook({});
+      require('./fixture/oceanic.css');
+    });
+
+    teardown(() => {
+      detachHook('.css');
+      dropCache('./env/fixture/oceanic.css');
+    });
+  });
+});
+
+/**
+ * @param {string} data
+ */
+function writeFile(data) {
+  writeFileSync(destination, data, 'utf8');
+}