diff --git a/spec/fixtures/json/test_01.json b/spec/fixtures/json/test_01.json
new file mode 100644
index 0000000..b5d8bb5
--- /dev/null
+++ b/spec/fixtures/json/test_01.json
@@ -0,0 +1 @@
+[1, 2, 3]
diff --git a/spec/unit/rubella/input/json/data_spec.rb b/spec/unit/rubella/input/json/data_spec.rb
new file mode 100644
index 0000000..bd6bc67
--- /dev/null
+++ b/spec/unit/rubella/input/json/data_spec.rb
@@ -0,0 +1,11 @@
+require 'spec_helper'
+
+describe Rubella::Input::JSON, '.data' do
+
+  it "returns the stored data" do
+    input = Rubella::Input::JSON.string "[3, 4, 5]"
+
+    expect(input.data).to eq([3, 4, 5])
+  end
+
+end
diff --git a/spec/unit/rubella/input/json/each_spec.rb b/spec/unit/rubella/input/json/each_spec.rb
new file mode 100644
index 0000000..e60b3a8
--- /dev/null
+++ b/spec/unit/rubella/input/json/each_spec.rb
@@ -0,0 +1,16 @@
+require 'spec_helper'
+
+describe Rubella::Input::JSON, '.each' do
+
+  it "passes the data through the given block" do
+    input = Rubella::Input::JSON.string "[3, 4, 5]"
+
+    sum = 0
+    input.each do |value|
+      sum = sum + value
+    end
+
+    expect(sum).to eq(12)
+  end
+
+end
\ No newline at end of file
diff --git a/spec/unit/rubella/input/json/self_file_spec.rb b/spec/unit/rubella/input/json/self_file_spec.rb
new file mode 100644
index 0000000..5c16431
--- /dev/null
+++ b/spec/unit/rubella/input/json/self_file_spec.rb
@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe Rubella::Input::JSON, '#self.file' do
+  
+  it 'returns a Rubella::Input::JSON object' do
+    input = Rubella::Input::JSON.file 'spec/fixtures/json/test_01.json'
+
+    expect(input).to be_instance_of(Rubella::Input::JSON)
+  end
+
+  it "uses the given data" do
+    input = Rubella::Input::JSON.file 'spec/fixtures/json/test_01.json'
+
+    expect(input.data).to eq([1, 2, 3])
+  end
+
+end
diff --git a/spec/unit/rubella/input/json/self_string_spec.rb b/spec/unit/rubella/input/json/self_string_spec.rb
new file mode 100644
index 0000000..d5855a2
--- /dev/null
+++ b/spec/unit/rubella/input/json/self_string_spec.rb
@@ -0,0 +1,17 @@
+require 'spec_helper'
+
+describe Rubella::Input::JSON, '#self.string' do
+  
+  it 'returns a Rubella::Input::JSON object' do
+    input = Rubella::Input::JSON.string '[]'
+
+    expect(input).to be_instance_of(Rubella::Input::JSON)
+  end
+
+  it "uses the given data" do
+    input = Rubella::Input::JSON.string '[1, 2, 3]'
+
+    expect(input.data).to eq([1, 2, 3])
+  end
+
+end