AU: Start checkpointing update progress.

omaha_hash_calculator_unittest.cc

Index: omaha_hash_calculator_unittest.cc
diff --git a/omaha_hash_calculator_unittest.cc b/omaha_hash_calculator_unittest.cc
index 449cb9021e487a728c1a07a5b7e5f72992cb6743..597b21f4d74638b2992d3f21e94a824ad7602250 100644
--- a/omaha_hash_calculator_unittest.cc
+++ b/omaha_hash_calculator_unittest.cc
@@ -51,6 +51,18 @@ TEST(OmahaHashCalculatorTest, MultiUpdateTest) {
   EXPECT_TRUE(raw_hash == calc.raw_hash());
 }
 
+TEST(OmahaHashCalculatorTest, ContextTest) {
+  OmahaHashCalculator calc;
+  calc.Update("h", 1);
+  OmahaHashCalculator calc_next;
+  calc_next.SetContext(calc.GetContext());
+  calc_next.Update("i", 1);
+  calc_next.Finalize();
+  // Generated by running this on a linux shell:
+  // $ echo -n hi | openssl dgst -sha256 -binary | openssl base64
+  EXPECT_EQ("j0NDRmSPa5bfid2pAcUXaxCm2Dlh3TwayItZstwyeqQ=", calc_next.hash());
+}
+
 TEST(OmahaHashCalculatorTest, BigTest) {
   OmahaHashCalculator calc;