[PATCH 4/4] test: add 'Emacs' prereq to dependent 'emacs-large-search-buffer' tests

[Pieter Praet]

Adds a new test that checks for the presence of 'emacs',
and adds that test as a prereq to all subsequent tests
that rely on Emacs.

This causes tests with unmet dependencies to be skipped.

---
 test/emacs-large-search-buffer |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/test/emacs-large-search-buffer b/test/emacs-large-search-buffer
index 6095e9d..5757380 100755
--- a/test/emacs-large-search-buffer
+++ b/test/emacs-large-search-buffer
@@ -2,6 +2,11 @@
 test_description="Emacs with large search results buffer"
 . test-lib.sh
 
+# Emacs is a prereq.
+test_expect_success "prereq: Emacs is present" "which emacs" \
+    && test_set_prereq EMACS
+
+
 x=xxxxxxxxxx # 10
 x=$x$x$x$x$x$x$x$x$x$x # 100
 x=$x$x$x$x$x$x$x$x$x # 900
@@ -27,7 +32,7 @@ test_emacs '(notmuch-search "*")
 	    (notmuch-test-wait)
 	    (test-output)'
 sed -i -e s',  *, ,g' -e 's/xxx*/[BLOB]/g' OUTPUT
-test_expect_equal_file OUTPUT EXPEXTED
+test_expect_equal_file EMACS OUTPUT EXPEXTED
 
 test_begin_subtest "Ensure that emacs doesn't drop error messages"
 test_emacs '(notmuch-search "--this-option-does-not-exist")
@@ -38,6 +43,6 @@ Error: Unexpected output from notmuch search:
 Unrecognized option: --this-option-does-not-exist
 End of search results. (process returned 1)
 EOF
-test_expect_equal_file OUTPUT EXPEXTED
+test_expect_equal_file EMACS OUTPUT EXPEXTED
 
 test_done
-- 
1.7.7.1