wip: rails (#145) (#159)

Author: yaronskaya

src/main/kotlin/app/extractors/RubyExtractor.kt

@@ -33,6 +33,9 @@ class RubyExtractor : ExtractorInterface {
             }
         }
 
+        // TODO(lyaronskaya): read external files
+        imports.add("rails")
+
         return imports.toList()
     }
 

src/test/kotlin/test/tests/extractors/ExtractorTest.kt

@@ -110,6 +110,12 @@ class ExtractorTest : Spek({
             assertExtractsLineLibraries("com.github.kittinunf.fuel",
                     line, KotlinExtractor())
         }
+
+        it("ruby extractor extracts rails") {
+            val line = "class Article < ApplicationRecord"
+            assertExtractsLineLibraries("rails",
+                    line, RubyExtractor())
+        }
     }
 
     given("code line doesn't use libraries" ) {
@@ -239,4 +245,5 @@ class ExtractorTest : Spek({
             assertTrue(lib in actualLineImports)
         }
     }
+
 })