From fa77ee8470a52412177adf37f0ef157a937fa45c Mon Sep 17 00:00:00 2001
From: Tianjie Xu <xunchang@google.com>
Date: Thu, 20 Feb 2020 23:09:44 -0800
Subject: Generate recovery.img for unittest during build time

The unit tests for imgpatch is comparing the compressed bytes. As
a result, these unit tests will fail with libz change.

Since the recovery image is just a gzipped ramdisk with some wrappings,
we can generate with minigzip it during the build time. This matches
the usage in the real world, where we generate the patch with the host
side libz; and apply the patch with the library on the device.

Bug: 149443852
Test: tests pass on Pixel3
Change-Id: I7885765a161c6bf765671bc55a72cfcaa04b4138
---
 tests/Android.bp             |  19 +++++++++++++++++++
 tests/testdata/recovery.img  | Bin 529707 -> 0 bytes
 tests/testdata/recovery_body | Bin 0 -> 1293568 bytes
 tests/testdata/recovery_head | Bin 0 -> 45056 bytes
 tests/testdata/recovery_tail | Bin 0 -> 5191 bytes
 5 files changed, 19 insertions(+)
 delete mode 100644 tests/testdata/recovery.img
 create mode 100644 tests/testdata/recovery_body
 create mode 100644 tests/testdata/recovery_head
 create mode 100644 tests/testdata/recovery_tail

diff --git a/tests/Android.bp b/tests/Android.bp
index bde1bc5f3..3d223907c 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -94,6 +94,24 @@ librecovery_static_libs = [
     "libtinyxml2",
 ]
 
+// recovery image for unittests.
+// ========================================================
+genrule {
+    name: "recovery_image",
+    cmd: "cat $(location testdata/recovery_head) <(cat $(location testdata/recovery_body) | $(location minigzip)) $(location testdata/recovery_tail) > $(out)",
+    srcs: [
+        "testdata/recovery_head",
+        "testdata/recovery_body",
+        "testdata/recovery_tail",
+    ],
+    tools: [
+        "minigzip",
+    ],
+    out: [
+        "testdata/recovery.img",
+    ],
+}
+
 cc_test {
     name: "recovery_unit_test",
     isolated: true,
@@ -127,6 +145,7 @@ cc_test {
 
     data: [
         "testdata/*",
+        ":recovery_image",
         ":res-testdata",
     ],
 }
diff --git a/tests/testdata/recovery.img b/tests/testdata/recovery.img
deleted file mode 100644
index b862e6f0c..000000000
Binary files a/tests/testdata/recovery.img and /dev/null differ
diff --git a/tests/testdata/recovery_body b/tests/testdata/recovery_body
new file mode 100644
index 000000000..48d7c10a5
Binary files /dev/null and b/tests/testdata/recovery_body differ
diff --git a/tests/testdata/recovery_head b/tests/testdata/recovery_head
new file mode 100644
index 000000000..7f494d098
Binary files /dev/null and b/tests/testdata/recovery_head differ
diff --git a/tests/testdata/recovery_tail b/tests/testdata/recovery_tail
new file mode 100644
index 000000000..7fe2c6ce8
Binary files /dev/null and b/tests/testdata/recovery_tail differ
-- 
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