Adding tests for RepeatSpec nodes

spec/parser/javascript/repeat_spec_spec.js

@@ -0,0 +1,34 @@
+import javascript from 'src/js/parser/javascript/parser.js';
+
+describe('parser/javascript/repeat_spec.js', function() {
+
+  it('parses "{n,m}" as a RepeatSpec (with minimum and maximum values)', function() {
+    var parser = new javascript.Parser('{24,42}');
+    expect(parser.__consume__repeat_spec()).toEqual(jasmine.objectContaining({
+      minimum: 24,
+      maximum: 42
+    }));
+  });
+
+  it('parses "{n,}" as a RepeatSpec (with only minimum value)', function() {
+    var parser = new javascript.Parser('{24,}');
+    expect(parser.__consume__repeat_spec()).toEqual(jasmine.objectContaining({
+      minimum: 24,
+      maximum: -1
+    }));
+  });
+
+  it('parses "{n}" as a RepeatSpec (with an exact count)', function() {
+    var parser = new javascript.Parser('{24}');
+    expect(parser.__consume__repeat_spec()).toEqual(jasmine.objectContaining({
+      minimum: 24,
+      maximum: 24
+    }));
+  });
+
+  it('does not parse "{,m}" as a RepeatSpec', function() {
+    var parser = new javascript.Parser('{,42}');
+    expect(parser.__consume__repeat_spec()).toEqual(null);
+  });
+
+});