tests: disable snap, fix write_files binary

The snap test requires access to a proxy and currently the integration
tests do not handle this scenario. I am disabling the test untill I can
loop back around and fix this.

The write_files test, specifically, the binary test is failing on cosmic
because the "binary" file we were writting was not a complete elf
executable, but we expected 'file' to identify it as such.

The change here is to simply use some 24 bytes of random, non-utf data
and check that file was written correctly via expected checksum.

3 files changed, 19 insertions, 6 deletions

diff --git a/tests/cloud_tests/testcases/modules/snappy.yaml b/tests/cloud_tests/testcases/modules/snappy.yaml
index 43f93295..8ac322ae 100644
--- a/tests/cloud_tests/testcases/modules/snappy.yaml
+++ b/tests/cloud_tests/testcases/modules/snappy.yaml
@@ -1,6 +1,9 @@
 #
 # Install snappy
 #
+# Aug 17, 2018: Disabled due to requiring a proxy for testing
+#    tests do not handle the proxy well at this time.
+enabled: False
 required_features:
   - snap
 cloud_config: |
diff --git a/tests/cloud_tests/testcases/modules/write_files.py b/tests/cloud_tests/testcases/modules/write_files.py
index 7bd520f6..526a2ebd 100644
--- a/tests/cloud_tests/testcases/modules/write_files.py
+++ b/tests/cloud_tests/testcases/modules/write_files.py
@@ -14,8 +14,11 @@ class TestWriteFiles(base.CloudTestCase):
 
     def test_binary(self):
         """Test binary file reads as executable."""
-        out = self.get_data_file('file_binary')
-        self.assertIn('ELF 64-bit LSB executable, x86-64, version 1', out)
+        out = self.get_data_file('file_binary').strip()
+        md5 = "3801184b97bb8c6e63fa0e1eae2920d7"
+        sha256 = ("2c791c4037ea5bd7e928d6a87380f8ba7a803cd83d"
+                  "5e4f269e28f5090f0f2c9a")
+        self.assertIn(out, (md5 + "  -", sha256 + "  -"))
 
     def test_gzip(self):
         """Test gzip file shows up as a shell script."""
diff --git a/tests/cloud_tests/testcases/modules/write_files.yaml b/tests/cloud_tests/testcases/modules/write_files.yaml
index ce936b7b..cc7ea4bd 100644
--- a/tests/cloud_tests/testcases/modules/write_files.yaml
+++ b/tests/cloud_tests/testcases/modules/write_files.yaml
@@ -3,6 +3,13 @@
 #
 # NOTE: on trusty 'file' has an output formatting error for binary files and
 #       has 2 spaces in 'LSB  executable', which causes a failure here
+#
+# NOTE: the binary data can be any binary data, not only executables
+#       and can be generated via the base 64 command as such:
+#           $ base64 < hello > hello.txt
+#       the opposite is running:
+#           $ base64 -d < hello.txt > hello
+#
 required_features:
   - no_file_fmt_e
 cloud_config: |
@@ -19,9 +26,7 @@ cloud_config: |
           SMBDOPTIONS="-D"
       path: /root/file_text
   -   content: !!binary |
-          f0VMRgIBAQAAAAAAAAAAAAIAPgABAAAAwARAAAAAAABAAAAAAAAAAJAVAAAAAAAAAAAAAEAAOAAI
-          AEAAHgAdAAYAAAAFAAAAQAAAAAAAAABAAEAAAAAAAEAAQAAAAAAAwAEAAAAAAADAAQAAAAAAAAgA
-          AAAAAAAAAwAAAAQAAAAAAgAAAAAAAAACQAAAAAAAAAJAAAAAAAAcAAAAAAAAABwAAAAAAAAAAQAA
+          /Z/xrHR4WINT0UNoKPQKbuovp6+Js+JK
       path: /root/file_binary
       permissions: '0555'
   -   encoding: gzip
@@ -38,7 +43,9 @@ collect_scripts:
     file /root/file_text
   file_binary: |
     #!/bin/bash
-    file /root/file_binary
+    for hasher in md5sum sha256sum; do
+        $hasher </root/file_binary && break
+    done
   file_gzip: |
     #!/bin/bash
     file /root/file_gzip