Implement object IDs

1 files changed, 77 insertions, 0 deletions

diff --git a/objects/id_test.go b/objects/id_test.go
new file mode 100644
index 0000000..361798d
--- /dev/null
+++ b/objects/id_test.go
@@ -0,0 +1,77 @@
+package objects
+
+import (
+	"testing"
+)
+
+func TestParseValidId(t *testing.T) {
+	have, err := ParseObjectId("sha3-256:000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f")
+	if err != nil {
+		t.Fatalf("Unexpected error: %s", err)
+	}
+
+	want := ObjectId{
+		Algo: OIdAlgoSHA3_256,
+		Sum: []byte{
+			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+		},
+	}
+
+	if !have.Equals(want) {
+		t.Errorf("unexpected result, want: '%s', have: '%s'", want, have)
+	}
+}
+
+func TestParseMalformedIds(t *testing.T) {
+	malformed := []string{
+		"",                // Empty not permitted
+		"sha3-256",        // Missing :
+		"sha3-256:",       // Missing hex sum
+		":abcdef",         // Missing algo
+		"foobar:abcdef",   // Basic format ok, but unknown algo
+		"sha3-256:foobar", // Not hexadecimal
+		"sha3-256:abcdef", // sum length mismatch
+	}
+
+	for _, s := range malformed {
+		oid, err := ParseObjectId(s)
+		if err == nil {
+			t.Errorf("'%s' resulted in valid id (%s), expected error", s, oid)
+		}
+	}
+}
+
+func TestParseSerialize(t *testing.T) {
+	want := ObjectId{
+		Algo: OIdAlgoSHA3_256,
+		Sum: []byte{
+			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
+			0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
+		},
+	}
+
+	have, err := ParseObjectId(want.String())
+	if err != nil {
+		t.Fatalf("Unexpected error: %s", err)
+	}
+
+	if !have.Equals(want) {
+		t.Errorf("unexpected result, want: '%s', have: '%s'", want, have)
+	}
+}
+
+func TestSerializeParse(t *testing.T) {
+	want := "sha3-256:000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
+
+	oid, err := ParseObjectId(want)
+	if err != nil {
+		t.Fatalf("Unexpected error: %s", err)
+	}
+
+	have := oid.String()
+
+	if have != want {
+		t.Errorf("unexpected result, want: '%s', have: '%s'", want, have)
+	}
+}