Rename files

dwarf/frame_parser_test.go

@@ -0,0 +1,103 @@
+package frame
+
+import (
+	"bytes"
+	"debug/elf"
+	"os"
+	"path/filepath"
+	"testing"
+)
+
+func grabDebugFrameSection(fp string, t *testing.T) []byte {
+	p, err := filepath.Abs("../_fixtures/testprog")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	f, err := os.Open(p)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	ef, err := elf.NewFile(f)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	data, err := ef.Section(".debug_frame").Data()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	return data
+}
+
+func TestDecodeULEB128(t *testing.T) {
+	var leb128 = bytes.NewBuffer([]byte{0xE5, 0x8E, 0x26})
+
+	n, c := decodeULEB128(leb128)
+	if n != 624485 {
+		t.Fatal("Number was not decoded properly, got: ", n, c)
+	}
+}
+
+func TestDecodeSLEB128(t *testing.T) {
+	sleb128 := bytes.NewBuffer([]byte{0x9b, 0xf1, 0x59})
+
+	n, c := decodeSLEB128(sleb128)
+	if n != -624485 {
+		t.Fatal("Number was not decoded properly, got: ", n, c)
+	}
+}
+
+func TestParseString(t *testing.T) {
+	bstr := bytes.NewBuffer([]byte{'h', 'i', 0x0, 0xFF, 0xCC})
+	str, _ := parseString(bstr)
+
+	if str != "hi" {
+		t.Fatal("String was not parsed correctly")
+	}
+}
+
+func TestParse(t *testing.T) {
+	data := grabDebugFrameSection("../fixtures/testprog", t)
+	ce := Parse(data)[0]
+
+	if ce.Length != 16 {
+		t.Fatal("Length was not parsed correctly")
+	}
+
+	if ce.CIE_id != 0xffffffff {
+		t.Fatal("CIE id was not parsed correctly")
+	}
+
+	if ce.Version != 0x3 {
+		t.Fatalf("Version was not parsed correctly expected %#v got %#v, data was %#v", 0x3, ce.Version, data[0:40])
+	}
+
+	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)
+	}
+
+	fe := ce.FrameDescriptorEntries[0]
+
+	if fe.Length != 32 {
+		t.Fatal("Length was not parsed correctly")
+	}
+
+	if fe.CIE_pointer != ce {
+		t.Fatal("Frame entry does not point to parent CIE")
+	}
+
+	if fe.InitialLocation != 0x400c00 {
+		t.Fatalf("Initial location not parsed correctly, got %#v", fe.InitialLocation)
+	}
+}