update_engine: Detect supported minor version from conf file.
If the delta minor version is not given as a command line argument, the
payload generator will look for the minor version in
etc/update_engine.conf in the old image.
BUG=chromium:455493
TEST=`FEATURES=test emerge-link update_engine`
CQ-DEPEND=CL:249956
Change-Id: I0f8e3f3c05432169770f2e8e283e8f1fb363def3
Reviewed-on: https://chromium-review.googlesource.com/249955
Reviewed-by: Alex Vakulenko <avakulenko@chromium.org>
Commit-Queue: Allie Wood <alliewood@chromium.org>
Tested-by: Allie Wood <alliewood@chromium.org>
diff --git a/delta_performer_unittest.cc b/delta_performer_unittest.cc
index b32ffc9..4e39c0c 100644
--- a/delta_performer_unittest.cc
+++ b/delta_performer_unittest.cc
@@ -11,6 +11,7 @@
#include <string>
#include <vector>
+#include <base/files/file_path.h>
#include <base/files/file_util.h>
#include <base/strings/string_util.h>
#include <base/strings/stringprintf.h>
@@ -1339,4 +1340,13 @@
EXPECT_TRUE(test_utils::RecursiveUnlinkDir(temp_dir));
}
+TEST(DeltaPerformerTest, MinorVersionsMatch) {
+ // Test that the minor version in update_engine.conf that is installed to
+ // the image matches the supported delta minor version in the update engine.
+ uint32_t minor_version;
+ base::FilePath conf_path("update_engine.conf");
+ EXPECT_TRUE(utils::GetMinorVersion(conf_path, &minor_version));
+ ASSERT_EQ(DeltaPerformer::kSupportedMinorPayloadVersion, minor_version);
+}
+
} // namespace chromeos_update_engine