[PATCH] test/README: mention the test_expect_equal_json and *sanitize* functions

[Aaron Ecay]

also fix one typo
---
 test/README | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/test/README b/test/README
index 81c232d..d12cff2 100644
--- a/test/README
+++ b/test/README
@@ -178,11 +178,18 @@ library for your script to use.
 
  test_expect_equal_file <file1> <file2>
 
-   Identical to test_exepect_equal, except that <file1> and <file2>
+   Identical to test_expect_equal, except that <file1> and <file2>
    are files instead of strings.  This is a much more robust method to
    compare formatted textual information, since it also notices
    whitespace and closing newline differences.
 
+ test_expect_equal_json <output> <expected>
+
+   Identical to test_expect_equal, except that the two strings are
+   treated as JSON and canonicalized before equality testing.  This is
+   useful to abstract away from whitespace differences in the expected
+   output and that generated by running a notmuch command.
+
  test_debug <script>
 
    This takes a single argument, <script>, and evaluates it only
@@ -253,3 +260,16 @@ variables which are useful in writing tests:
     generated script that should be called instead of notmuch to do
     the counting.  The notmuch_counter_value() function prints the
     current counter value.
+
+There are also functions which remove various environment-dependent
+values from notmuch output; these are useful to ensure that test
+results remain consistent across different machines.
+
+ notmuch_search_sanitize
+ notmuch_show_sanitize
+ notmuch_show_sanitize_all
+ notmuch_json_show_sanitize
+
+   All these functions should receive the text to be sanitized as the
+   input of a pipe, e.g.
+   output=`notmuch search "..." | notmuch_search_sanitize`
-- 
1.8.1.5