znapzend 0.15.3 (new formula)

New formula to install znapzend zfs backup tool.

all the props and flowers and 🎂  to ilovezfs for coding the test in large parts with help from mikemcquaid and bfontaine

-definitely not for claustrophobics - removed space that was upsetting brew audit

use fake zfs command and make sure that znapzend calls it with the right parameters

Closes Homebrew/homebrew#49630.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Formula/znapzend.rb

@@ -0,0 +1,34 @@
+class Znapzend < Formula
+  desc "zfs backup with remote capabilities and mbuffer integration"
+  homepage "http://www.znapzend.org"
+  url "https://github.com/oetiker/znapzend/releases/download/v0.15.3/znapzend-0.15.3.tar.gz"
+  sha256 "27f7c218f4e71beac7b2ba52386a7742506d45c0b3fd40104f44ccef0f373b6e"
+
+  depends_on "perl" if MacOS.version <= :mavericks
+
+  def install
+    system "./configure", "--disable-silent-rules",
+                          "--prefix=#{prefix}"
+    system "make", "install"
+  end
+
+  test do
+    fake_zfs = testpath/"zfs"
+    fake_zfs.write <<-EOS.undent
+      #!/bin/sh
+      for word in "$@"; do echo $word; done >> znapzendzetup_said.txt
+      exit 0
+    EOS
+    chmod 0755, fake_zfs
+    ENV.prepend_path "PATH", testpath
+    system "#{bin}/znapzendzetup", "list"
+    assert_equal <<-EOS.undent, (testpath/"znapzendzetup_said.txt").read
+      list
+      -H
+      -o
+      name
+      -t
+      filesystem,volume
+    EOS
+  end
+end