From d142fbe0a5fbc86cce50affa9d7f712a8b410954 Mon Sep 17 00:00:00 2001
From: Joe Thornber <ejt@redhat.com>
Date: Thu, 17 Aug 2017 16:26:15 +0100
Subject: [PATCH] [functional-tests] Add some cache_check tests

---
 functional-tests/cache-functional-tests.scm | 122 ++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 functional-tests/cache-functional-tests.scm

diff --git a/functional-tests/cache-functional-tests.scm b/functional-tests/cache-functional-tests.scm
new file mode 100644
index 0000000..f1fa009
--- /dev/null
+++ b/functional-tests/cache-functional-tests.scm
@@ -0,0 +1,122 @@
+(library
+  (cache-functional-tests)
+  (export register-cache-tests)
+  (import (chezscheme)
+          (functional-tests)
+          (cache-xml)
+          (fmt fmt)
+          (srfi s8 receive))
+
+  (define-tool cache-check)
+  (define-tool cache-dump)
+  (define-tool cache-restore)
+  (define-tool cache-metadata-size)
+
+  (define (current-metadata) "metadata.bin")
+
+  (define (temp-cache-xml)
+    (temp-file-containing (fmt #f (generate-xml 512 1024 128))))
+
+  (define (%with-valid-metadata thunk)
+    (cache-restore "-i" (temp-cache-xml) "-o" (current-metadata))
+    (thunk))
+
+  (define-syntax with-valid-metadata
+    (syntax-rules ()
+      ((_ body ...)
+       (%with-valid-metadata (lambda () body ...)))))
+
+  ;;; It would be nice if the metadata was at least similar to valid data.
+  (define (%with-corrupt-metadata thunk)
+    (run-ok "dd if=/dev/zero" (fmt #f "of=" (current-metadata)) "bs=64M count=1")
+    (thunk))
+
+  (define-syntax with-corrupt-metadata
+    (syntax-rules ()
+      ((_ body ...) (%with-corrupt-metadata (lambda () body ...)))))
+
+
+  ;; We have to export something that forces all the initialisation expressions
+  ;; to run.
+  (define (register-cache-tests) #t)
+
+  (define cache-check-help
+    "Usage: cache_check [options] {device|file}
+Options:
+  {-q|--quiet}
+  {-h|--help}
+  {-V|--version}
+  {--clear-needs-check-flag}
+  {--super-block-only}
+  {--skip-mappings}
+  {--skip-hints}
+  {--skip-discards}")
+
+  ;;;-----------------------------------------------------------
+  ;;; cache_check scenarios
+  ;;;-----------------------------------------------------------
+
+  (define-scenario (cache-check v)
+                   "cache_check -V"
+                   (receive (stdout _) (cache-check "-V")
+                            (assert-equal tools-version stdout)))
+
+  (define-scenario (cache-check version)
+                   "cache_check --version"
+                   (receive (stdout _) (cache-check "--version")
+                            (assert-equal tools-version stdout)))
+
+  (define-scenario (cache-check h)
+                   "cache_check -h"
+                   (receive (stdout _) (cache-check "-h")
+                            (assert-equal cache-check-help stdout)))
+
+  (define-scenario (cache-check help)
+                   "cache_check --help"
+                   (receive (stdout _) (cache-check "--help")
+                            (assert-equal cache-check-help stdout)))
+
+  (define-scenario (cache-check must-specify-metadata)
+                   "Metadata file must be specified"
+                   (receive (_ stderr) (run-fail "cache_check")
+                            (assert-equal
+                              (string-append "No input file provided.\n"
+                                             cache-check-help)
+                              stderr)))
+
+  (define-scenario (cache-check no-such-metadata)
+                   "Metadata file doesn't exist."
+                   (let ((bad-path "/arbitrary/filename"))
+                    (receive (_ stderr) (run-fail "cache_check" bad-path)
+                             (assert-starts-with
+                               (string-append bad-path ": No such file or directory")
+                               stderr))))
+
+  (define-scenario (cache-check metadata-file-cannot-be-a-directory)
+                   "Metadata file must not be a directory"
+                   (let ((bad-path "/tmp"))
+                    (receive (_ stderr) (run-fail "cache_check" bad-path)
+                             (assert-starts-with
+                               (string-append bad-path ": Not a block device or regular file")
+                               stderr))))
+
+  #|
+  (define-scenario (cache-check unreadable-metadata)
+                   "Metadata file exists, but is unreadable."
+                   (with-valid-metadata
+                     (run-ok "chmod" "-r" (current-metadata))
+                     (receive (_ stderr) (run-fail "cache_check" (current-metadata))
+                              (assert-starts-with "syscall 'open' failed: Permission denied" stderr))))
+  |#
+  (define-scenario (cache-check fails-with-corrupt-metadata)
+                   "Fail with corrupt superblock"
+                   (with-corrupt-metadata
+                     (run-fail "cache_check" (current-metadata))))
+
+  (define-scenario (cache-check failing-q)
+                   "Fail quietly with -q"
+                   (with-corrupt-metadata
+                     (receive (stdout stderr) (run-fail "cache_check" "-q" (current-metadata))
+                              (assert-eof stdout)
+                              (assert-eof stderr))))
+)