Implement initial next implementation

This current implementation does not cover the following:

* Setting correct breakpoint when exiting loop
* Setting correct breakpoint when returning from function
    * All facilities are available for this, it just is not taken into
      account in the current `next` implementation.

dwarf/frame/frame_parser_test.go

@@ -0,0 +1,40 @@
+package frame_test
+
+import (
+	"testing"
+
+	"github.com/derekparker/dbg/dwarf/frame"
+)
+
+func TestParse(t *testing.T) {
+	var (
+		data = grabDebugFrameSection("../../_fixtures/testprog", t)
+		fe   = frame.Parse(data)[0]
+		ce   = fe.CIE
+	)
+
+	if ce.Length != 16 {
+		t.Error("Length was not parsed correctly, got ", ce.Length)
+	}
+
+	if ce.Version != 0x3 {
+		t.Fatalf("Version was not parsed correctly expected %#v got %#v", 0x3, ce.Version)
+	}
+
+	if ce.Augmentation != "" {
+		t.Fatal("Augmentation was not parsed correctly")
+	}
+
+	if ce.CodeAlignmentFactor != 0x1 {
+		t.Fatal("Code Alignment Factor was not parsed correctly")
+	}
+
+	if ce.DataAlignmentFactor != -4 {
+		t.Fatalf("Data Alignment Factor was not parsed correctly got %#v", ce.DataAlignmentFactor)
+	}
+
+	if fe.Length != 32 {
+		t.Fatal("Length was not parsed correctly, got ", fe.Length)
+	}
+
+}