Add first specs for .gen_decoder and .encode_byte

spec/lib/rex/encoder/nonalpha_spec.rb

@@ -0,0 +1,71 @@
+# -*- coding:binary -*-
+require 'spec_helper'
+
+require 'rex/encoder/nonalpha'
+
+describe Rex::Encoder::NonAlpha do
+
+  let(:decoder) do
+    dec = "\x66\xB9\xFF\xFF" +
+        "\xEB\x19"  +
+        "\\\x5E"      +
+        "\x8B\xFE"  +
+        "\x83\xC7"  + "." +
+        "\x8B\xD7"  +
+        "\x3B\xF2"  +
+        "\\\x7D\x0B"  +
+        "\xB0\\\x7B"  +
+        "\xF2\xAE"  +
+        "\xFF\xCF"  +
+        "\xAC"      +
+        "\\\x28\x07"  +
+        "\xEB\xF1"  +
+        "\xEB"      + "." +
+        "\xE8\xE2\xFF\xFF\xFF"
+    Regexp.new(dec)
+  end
+
+  describe ".gen_decoder" do
+    subject { described_class.gen_decoder }
+
+    it "returns an String" do
+      is_expected.to be_kind_of(String)
+    end
+
+    it "returns the decoder code" do
+      p "#{described_class.gen_decoder}"
+      is_expected.to match(decoder)
+    end
+  end
+
+  describe ".encode_byte" do
+    subject { described_class.encode_byte(block, table, tablelen) }
+
+    context "when tablelen > 255" do
+      let(:badchars) { "" }
+      let(:block) { 0x20 }
+      let(:table) { "" }
+      let(:tablelen) { 256 }
+
+      it "raises an error" do
+        expect { subject }.to raise_error(RuntimeError)
+      end
+    end
+
+    context "when block == 0x7b" do
+      let(:badchars) { "" }
+      let(:block) { 0x7b }
+      let(:table) { "" }
+      let(:tablelen) { 0 }
+
+      it "raises an error" do
+        expect { subject }.to raise_error(RuntimeError)
+      end
+    end
+
+    context "when block == 0x40" do
+
+    end
+  end
+
+end