support/testing: TestApache: use read-only rootfs image

With this the test verifies not only that Apache can work in
principle, but also that it works with a read-only rootfs. Because of
the read-only rootfs the test itself cannot write to /root, so store
the test download in /tmp.

Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 0c349a8813)
Signed-off-by: Titouan Christophe <titouan.christophe@mind.be>

support/testing/tests/package/test_apache.py

@@ -1,5 +1,6 @@
 import os
 
+import infra
 import infra.basetest
 
 
@@ -7,17 +8,22 @@ class TestApache(infra.basetest.BRTest):
     config = infra.basetest.BASIC_TOOLCHAIN_CONFIG + \
         """
         BR2_PACKAGE_APACHE=y
-        BR2_TARGET_ROOTFS_CPIO=y
+        BR2_TARGET_ROOTFS_SQUASHFS=y
+        BR2_TARGET_ROOTFS_SQUASHFS4_LZO=y
         # BR2_TARGET_ROOTFS_TAR is not set
         """
 
     def test_run(self):
-        cpio_file = os.path.join(self.builddir, "images", "rootfs.cpio")
-        self.emulator.boot(arch="armv5",
+        rootfs = os.path.join(self.builddir, "images", "rootfs.squashfs")
+        infra.img_round_power2(rootfs)
+        self.emulator.boot(arch="armv7",
                            kernel="builtin",
-                           options=["-initrd", cpio_file])
+                           kernel_cmdline=["root=/dev/mmcblk0",
+                                           "rootfstype=squashfs"],
+                           options=["-drive",
+                                    "file={},if=sd,format=raw".format(rootfs)])
         self.emulator.login()
 
         self.assertRunOk("httpd -V")
-        self.assertRunOk("wget http://localhost/index.html")
-        self.assertRunOk("grep -F 'It works!' index.html")
+        self.assertRunOk("wget -O /tmp/index.html http://localhost/index.html")
+        self.assertRunOk("grep -F 'It works!' /tmp/index.html")