diff --git a/.byebug_history b/.byebug_history
deleted file mode 100644
index 0365720..0000000
--- a/.byebug_history
+++ /dev/null
@@ -1,102 +0,0 @@
-c
-resp.status.first
-resp.status
-resp.200
-resp.ok?
-resp.status.to_i
-resp.status.first
-resp.status
-c
-n
-c
-resp.status
-resp
-c
-view.first.last.dig("preview_url")
-view.first.last.keys
-view.first.last
-c
-view.first.last.dig(data.to_s)
-view.first.last.dig(data)
-view.first.last
-view
-data
-c
-n
-@view.info_url
-n
-c
-@view.response
-@view.response.first.last.keys
-@view.response.first.last.dig("info_url")
-@view.response.first.last
-@view.response.first.last.dig("info_url")
-@view.response
-@view
-@view.info_url
-@view
-n
-c
-@view.
-@view
-c
-pp JSON.parse(d)
-JSON.parse(d)
-d.class
-puts d
-pp d
-puts d
-d
-ap d
-d =URI.open( "https://openlibrary.org/api/books?jscmd=#{format}&format=json&bibkeys=#{id_kind.to_s.upcase}#{id}" ).read
-n
-s
-c
-id_kind
-ID_KINDS
-ID_KINDS.include?(id_kind)
-id_kind
-s
-c
-n
-s
-c
-n
-s
-c
-@id_kind
-c
-s
-@view
-c
-n
-s
-c
-id
-format
-d
-"https://openlibrary.org/api/books?jscmd=#{format}&format=json&bibkeys=#{kind.to_s.upcase}#{id}"
-n
-s
-@view = nil
-c
-n
-@view = nil
-@view
-c
-s
-c
-n
-s
-c
-n
-@view
-n
-c
-d.read
-d.body
-ap d
-d = URI.open( "https://openlibrary.org/api/books?jscmd=#{format}&format=json&bibkeys=#{kind.to_s.upcase}")
-"https://openlibrary.org/api/books?jscmd=#{format}&format=json&bibkeys=#{kind.to_s.upcase}"
-n
-s
diff --git a/.gitignore b/.gitignore
index 9106b2a..2a885bf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@
 /pkg/
 /spec/reports/
 /tmp/
+.byebug_history
diff --git a/test/fixtures.rb b/test/fixtures.rb
new file mode 100644
index 0000000..92b2085
--- /dev/null
+++ b/test/fixtures.rb
@@ -0,0 +1,90 @@
+TESTCASES= [
+  isbn: '9780316030571',
+  data: {
+    "ISBN:9780316030571": {
+        "authors": [
+            {
+                "name": "Iain M. Banks",
+                "url": "https://openlibrary.org/authors/OL6924809A/Iain_M._Banks"
+            }
+        ],
+        "cover": {
+            "large": "https://covers.openlibrary.org/b/id/2379038-L.jpg",
+            "medium": "https://covers.openlibrary.org/b/id/2379038-M.jpg",
+            "small": "https://covers.openlibrary.org/b/id/2379038-S.jpg"
+        },
+        "ebooks": [
+            {
+                "availability": "borrow",
+                "borrow_url": "https://openlibrary.org/books/OL10426208M/Use_of_Weapons/borrow",
+                "checkedout": false,
+                "formats": {},
+                "preview_url": "https://archive.org/details/useofweapons00bank_0"
+            }
+        ],
+        "identifiers": {
+            "goodreads": [
+                "3395563"
+            ],
+            "isbn_10": [
+                "0316030570"
+            ],
+            "isbn_13": [
+                "9780316030571"
+            ],
+            "librarything": [
+                "141"
+            ],
+            "openlibrary": [
+                "OL10426208M"
+            ]
+        },
+        "key": "/books/OL10426208M",
+        "number_of_pages": 480,
+        "publish_date": "July 28, 2008",
+        "publishers": [
+            {
+                "name": "Orbit"
+            }
+        ],
+        "subject_people": [
+            {
+                "name": "Cheradenine Zakalwe",
+                "url": "https://openlibrary.org/subjects/person:cheradenine_zakalwe"
+            },
+            {
+                "name": "Diziet Sma",
+                "url": "https://openlibrary.org/subjects/person:diziet_sma"
+            },
+            {
+                "name": "Skaffen-Amtiskaw",
+                "url": "https://openlibrary.org/subjects/person:skaffen-amtiskaw"
+            }
+        ],
+        "subjects": [
+            {
+                "name": "Fiction",
+                "url": "https://openlibrary.org/subjects/fiction"
+            },
+            {
+                "name": "Science Fiction",
+                "url": "https://openlibrary.org/subjects/science_fiction"
+            },
+            {
+                "name": "Science Fiction & Fantasy",
+                "url": "https://openlibrary.org/subjects/science_fiction_&_fantasy"
+            },
+            {
+                "name": "Long Now Manual for Civilization",
+                "url": "https://openlibrary.org/subjects/long_now_manual_for_civilization"
+            },
+            {
+                "name": "Space warfare",
+                "url": "https://openlibrary.org/subjects/space_warfare"
+            }
+        ],
+        "title": "Use of Weapons",
+        "url": "https://openlibrary.org/books/OL10426208M/Use_of_Weapons"
+    }
+  }
+]
diff --git a/test/openlib_test.rb b/test/openlib_test.rb
index 518719d..821c922 100644
--- a/test/openlib_test.rb
+++ b/test/openlib_test.rb
@@ -1,4 +1,5 @@
 require "test_helper"
+require 'byebug'
 
 class OpenlibTest < Minitest::Test
   def test_that_it_has_a_version_number
@@ -6,6 +7,21 @@ class OpenlibTest < Minitest::Test
   end
 
   def test_it_does_something_useful
-    assert false
+
+    TESTCASES.each do |tc|
+      b = Openlib::Book.new(id: tc.dig(:isbn))
+      b.view = tc.dig(:view)
+      b.data = tc.dig(:data)
+
+      assert_equal tc.dig(:data).first.last.dig('authors').map {|e| e.dig('name') }, b.authors
+      assert_equal tc.dig(:data).first.last.dig('title').map {|e| e.dig('name') }, b.title
+    end
+
   end
+
+  TESTCASES= [
+    isbn: '9780316030571',
+    view: {"ISBN:9780316030571"=>{"bib_key"=>"ISBN:9780316030571", "preview"=>"borrow", "thumbnail_url"=>"https://covers.openlibrary.org/b/id/2379038-S.jpg", "preview_url"=>"https://archive.org/details/useofweapons00bank_0", "info_url"=>"https://openlibrary.org/books/OL10426208M/Use_of_Weapons"}},
+    data: {"ISBN:9780316030571"=>{"publishers"=>[{"name"=>"Orbit"}], "identifiers"=>{"isbn_13"=>["9780316030571"], "openlibrary"=>["OL10426208M"], "isbn_10"=>["0316030570"], "librarything"=>["141"], "goodreads"=>["3395563"]}, "title"=>"Use of Weapons", "url"=>"https://openlibrary.org/books/OL10426208M/Use_of_Weapons", "number_of_pages"=>480, "cover"=>{"small"=>"https://covers.openlibrary.org/b/id/2379038-S.jpg", "large"=>"https://covers.openlibrary.org/b/id/2379038-L.jpg", "medium"=>"https://covers.openlibrary.org/b/id/2379038-M.jpg"}, "subjects"=>[{"url"=>"https://openlibrary.org/subjects/fiction", "name"=>"Fiction"}, {"url"=>"https://openlibrary.org/subjects/science_fiction", "name"=>"Science Fiction"}, {"url"=>"https://openlibrary.org/subjects/science_fiction_&_fantasy", "name"=>"Science Fiction & Fantasy"}, {"url"=>"https://openlibrary.org/subjects/long_now_manual_for_civilization", "name"=>"Long Now Manual for Civilization"}, {"url"=>"https://openlibrary.org/subjects/space_warfare", "name"=>"Space warfare"}], "subject_people"=>[{"url"=>"https://openlibrary.org/subjects/person:cheradenine_zakalwe", "name"=>"Cheradenine Zakalwe"}, {"url"=>"https://openlibrary.org/subjects/person:diziet_sma", "name"=>"Diziet Sma"}, {"url"=>"https://openlibrary.org/subjects/person:skaffen-amtiskaw", "name"=>"Skaffen-Amtiskaw"}], "key"=>"/books/OL10426208M", "authors"=>[{"url"=>"https://openlibrary.org/authors/OL6924809A/Iain_M._Banks", "name"=>"Iain M. Banks"}], "publish_date"=>"July 28, 2008", "ebooks"=>[{"checkedout"=>false, "formats"=>{}, "preview_url"=>"https://archive.org/details/useofweapons00bank_0", "borrow_url"=>"https://openlibrary.org/books/OL10426208M/Use_of_Weapons/borrow", "availability"=>"borrow"}]}}
+  ]
 end