diff --git a/spec/converters/json_spec.rb b/spec/converters/json_spec.rb
new file mode 100644
index 0000000..e28f746
--- /dev/null
+++ b/spec/converters/json_spec.rb
@@ -0,0 +1,150 @@
+require 'spec_helper'
+require 'ronin/masscan/converters/json'
+require 'tempfile'
+
+RSpec.describe Ronin::Masscan::Converters::JSON do
+  let(:fixtures_path) { File.expand_path(File.join(__dir__, '..', 'fixtures')) }
+  let(:masscan_path)  { File.join(fixtures_path, 'converters', 'input.json') }
+  let(:masscan_file)  { Masscan::OutputFile.new(masscan_path) }
+  let(:ip_addr)       { IPAddr.new('93.184.216.34/32') }
+  let(:timestamp)     { Time.at(1629960621) }
+  let(:expected_status) do
+    {
+      status: :open,
+      protocol: :tcp,
+      port: 80,
+      reason: [:syn, :ack],
+      ttl: 54,
+      ip: ip_addr,
+      timestamp: timestamp
+    }
+  end
+  let(:expected_banner) do
+    {
+      protocol: :tcp,
+      port: 80,
+      ip: ip_addr,
+      timestamp: timestamp,
+      app_protocol: :html_title,
+      payload: '404 - Not Found'
+    }
+  end
+
+  describe '.convert' do
+    let(:expected_result) { JSON.dump([expected_status, expected_banner]) }
+
+    it 'must convert masscan file to json and write it into an output' do
+      tempfile = Tempfile.new(['ronin-masscan', '.json'])
+
+      subject.convert(masscan_file, tempfile)
+
+      tempfile.rewind
+      json = tempfile.read
+      expect(json).to eq(expected_result)
+    end
+  end
+
+  describe '.masscan_file_to_json' do
+    let(:expected_result) { JSON.dump([expected_status, expected_banner]) }
+
+    it 'must convert masscan file to json and write it into an output' do
+      tempfile = Tempfile.new(['ronin-masscan', '.json'])
+
+      subject.convert(masscan_file, tempfile)
+
+      tempfile.rewind
+      json = tempfile.read
+      expect(json).to eq(expected_result)
+    end
+  end
+
+  describe '.masscan_file_as_json' do
+    let(:expected_result) { [expected_status, expected_banner] }
+
+    it 'must convert masscan file to json representation' do
+      expect(subject.masscan_file_as_json(masscan_file)).to eq(expected_result)
+    end
+  end
+
+  describe '.record_as_json' do
+    context 'for Masscan::Status' do
+      let(:record) do
+        Masscan::Status.new(
+          ip: ip_addr,
+          protocol: :tcp,
+          port: 80,
+          reason: [:syn, :ack],
+          status: :open,
+          timestamp: Time.at(1629960621),
+          ttl: 54
+        )
+      end
+
+      it 'must return status as json' do
+        expect(subject.record_as_json(record)).to eq(expected_status)
+      end
+    end
+
+    context 'for Masscan::Banner' do
+      let(:record) do
+        Masscan::Banner.new(
+          protocol: :tcp,
+          port: 80,
+          ip: ip_addr,
+          timestamp: timestamp,
+          app_protocol: :html_title,
+          payload: '404 - Not Found'
+        )
+      end
+
+      it 'must return banner as json' do
+        expect(subject.record_as_json(record)).to eq(expected_banner)
+      end
+    end
+
+    context 'for unknown record' do
+      let(:record) { 'unknown' }
+
+      it 'must raise a NotImplementedError' do
+        expect {
+          subject.record_as_json(record)
+        }.to raise_error(NotImplementedError, "unable to convert masscan record: #{record.inspect}")
+      end
+    end
+  end
+
+  describe '.status_as_json' do
+    let(:status) do
+      Masscan::Status.new(
+        ip: ip_addr,
+        protocol: :tcp,
+        port: 80,
+        reason: [:syn, :ack],
+        status: :open,
+        timestamp: Time.at(1629960621),
+        ttl: 54
+      )
+    end
+
+    it 'must convert Masscan::Status to a Hash' do
+      expect(subject.status_as_json(status)).to eq(expected_status)
+    end
+  end
+
+  describe '.banner_as_json' do
+    let(:banner) do
+      Masscan::Banner.new(
+        protocol: :tcp,
+        port: 80,
+        ip: ip_addr,
+        timestamp: timestamp,
+        app_protocol: :html_title,
+        payload: '404 - Not Found'
+      )
+    end
+
+    it 'must convert Masscan::Banner to a Hash' do
+      expect(subject.banner_as_json(banner)).to eq(expected_banner)
+    end
+  end
+end
diff --git a/spec/fixtures/converters/input.json b/spec/fixtures/converters/input.json
new file mode 100644
index 0000000..cf1417d
--- /dev/null
+++ b/spec/fixtures/converters/input.json
@@ -0,0 +1,5 @@
+[
+{ "ip": "93.184.216.34", "timestamp": "1629960621", "ports": [ {"port": 80, "proto": "tcp", "status": "open", "reason": "syn-ack", "ttl": 54} ] }
+,
+{ "ip": "93.184.216.34", "timestamp": "1629960621", "ports": [ {"port": 80, "proto": "tcp", "service": {"name": "title", "banner": "404 - Not Found"} } ] }
+]
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