WIP: Test types index

tests/types_index_correct.js

@@ -0,0 +1,28 @@
+const fs = require('fs');
+const path = require('path');
+const colors = require('colors');
+
+let failed = false;
+
+const fixturePath = path.join(__dirname, '..', 'fixtures');
+
+// get index
+const indexPath = path.join(fixturePath, 'index_types.json');
+let index = JSON.parse(fs.readFileSync(indexPath, 'utf8'));
+console.log('Parsing types index file ' + indexPath);
+
+
+// reverse `f(type) -> fixtures` to `f(fixture) -> type`
+// (mathematical notation)
+const fixtureTypes = {};
+for (const type in index) {
+  for (const fixture of index[type]) {
+    if (fixtureTypes[fixture] === undefined) {
+      fixtureTypes[fixture] = [type];
+    }
+    else {
+      fixtureTypes[fixture].push(type);
+    }
+  }
+}
+console.log(fixtureTypes);