t1407: make hash size independent

[thirdparty/git.git] / t / test-lib-functions.sh

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 2b2181dca09089ed36d10ee8f6f67eedda8cf352..7293041b1e555d8d133afa1537c3d668e5b1bbba 100644 (file)
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -565,6 +565,14 @@ test_path_is_dir () {
        fi
 }
 
+test_path_exists () {
+       if ! test -e "$1"
+       then
+               echo "Path $1 doesn't exist. $2"
+               false
+       fi
+}
+
 # Check if the directory exists and is empty as expected, barf otherwise.
 test_dir_is_empty () {
        test_path_is_dir "$1" &&
@@ -1147,3 +1155,72 @@ depacketize () {
                }
        '
 }
+
+# Set the hash algorithm in use to $1.  Only useful when testing the testsuite.
+test_set_hash () {
+       test_hash_algo="$1"
+}
+
+# Detect the hash algorithm in use.
+test_detect_hash () {
+       # Currently we only support SHA-1, but in the future this function will
+       # actually detect the algorithm in use.
+       test_hash_algo='sha1'
+}
+
+# Load common hash metadata and common placeholder object IDs for use with
+# test_oid.
+test_oid_init () {
+       test -n "$test_hash_algo" || test_detect_hash &&
+       test_oid_cache <"$TEST_DIRECTORY/oid-info/hash-info" &&
+       test_oid_cache <"$TEST_DIRECTORY/oid-info/oid"
+}
+
+# Load key-value pairs from stdin suitable for use with test_oid.  Blank lines
+# and lines starting with "#" are ignored.  Keys must be shell identifier
+# characters.
+#
+# Examples:
+# rawsz sha1:20
+# rawsz sha256:32
+test_oid_cache () {
+       local tag rest k v &&
+
+       { test -n "$test_hash_algo" || test_detect_hash; } &&
+       while read tag rest
+       do
+               case $tag in
+               \#*)
+                       continue;;
+               ?*)
+                       # non-empty
+                       ;;
+               *)
+                       # blank line
+                       continue;;
+               esac &&
+
+               k="${rest%:*}" &&
+               v="${rest#*:}" &&
+
+               if ! expr "$k" : '[a-z0-9][a-z0-9]*$' >/dev/null
+               then
+                       error 'bug in the test script: bad hash algorithm'
+               fi &&
+               eval "test_oid_${k}_$tag=\"\$v\""
+       done
+}
+
+# Look up a per-hash value based on a key ($1).  The value must have been loaded
+# by test_oid_init or test_oid_cache.
+test_oid () {
+       local var="test_oid_${test_hash_algo}_$1" &&
+
+       # If the variable is unset, we must be missing an entry for this
+       # key-hash pair, so exit with an error.
+       if eval "test -z \"\${$var+set}\""
+       then
+               error "bug in the test script: undefined key '$1'" >&2
+       fi &&
+       eval "printf '%s' \"\${$var}\""
+}