Enhance tests and fix tests copyright for files API root best-effort pin.

License: MIT
Signed-off-by:   <k@kevina.org>

test/sharness/t0252-files-gc.sh

 #!/bin/sh
 #
-# Copyright (c) 2016 Jeromy Johnson
+# Copyright (c) 2016 Kevin Atkinson
 # MIT Licensed; see the LICENSE file in this repository.
 #
 
@@ -16,21 +16,30 @@ test_expect_success "object not removed after gc" '
   ipfs cat QmVib14uvPnCP73XaCDpwugRuwfTsVbGyWbatHAmLSdZUS
 '
 
+test_expect_success "/hello.txt still accessible after gc" '
+  ipfs files read /hello.txt
+'
+
+ADIR_HASH=QmbCgoMYVuZq8m1vK31JQx9DorwQdLMF1M3sJ7kygLLqnW
+FILE1_HASH=QmX4eaSJz39mNhdu5ACUwTDpyA6y24HmrQNnAape6u3buS
+
 test_expect_success "gc okay after adding incomplete node -- prep" '
   ipfs files mkdir /adir &&
   echo "file1" |  ipfs files write --create /adir/file1 &&
   echo "file2" |  ipfs files write --create /adir/file2 &&
-  ipfs pin add --recursive=false QmbCgoMYVuZq8m1vK31JQx9DorwQdLMF1M3sJ7kygLLqnW &&
+  ipfs cat $FILE1_HASH && 
+  ipfs pin add --recursive=false $ADIR_HASH &&
   ipfs files rm -r /adir &&
   ipfs repo gc && # will remove /adir/file1 and /adir/file2 but not /adir
-  ipfs files cp /ipfs/QmbCgoMYVuZq8m1vK31JQx9DorwQdLMF1M3sJ7kygLLqnW /adir &&
-  ipfs pin rm QmbCgoMYVuZq8m1vK31JQx9DorwQdLMF1M3sJ7kygLLqnW
+  test_must_fail ipfs cat $FILE1_HASH &&
+  ipfs files cp /ipfs/$ADIR_HASH /adir &&
+  ipfs pin rm $ADIR_HASH
 '
 
 test_expect_success "gc okay after adding incomplete node" '
-  ipfs refs QmbCgoMYVuZq8m1vK31JQx9DorwQdLMF1M3sJ7kygLLqnW &&
+  ipfs refs $ADIR_HASH &&
   ipfs repo gc &&
-  ipfs refs QmbCgoMYVuZq8m1vK31JQx9DorwQdLMF1M3sJ7kygLLqnW
+  ipfs refs $ADIR_HASH
 '
 
 test_done