t4020: abstract away SHA-1-specific constants

Adjust the test so that it computes variables for blobs instead of using hard-coded hashes. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

brian m. carlson committed May 21, 2018 at 02:01 UTC f2fffc17dcc2c93d0fddbec8f655ebfab2a822ec
1 file changed +8 -2
t/t4020-diff-external.sh
+8 -2
@@ -13,6 +13,8 @@ test_expect_success setup '
13
14 test_tick &&
15 echo second >file &&
16 + before=$(git hash-object file) &&
17 + before=$(git rev-parse --short $before) &&
18 git add file &&
19 git commit -m second &&
20
@@ -180,9 +182,13 @@ test_expect_success 'no diff with -diff' '
182 echo NULZbetweenZwords | perl -pe 'y/Z/\000/' > file
183
184 test_expect_success 'force diff with "diff"' '
185 + after=$(git hash-object file) &&
186 + after=$(git rev-parse --short $after) &&
187 echo >.gitattributes "file diff" &&
188 git diff >actual &&
185 - test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
189 + sed -e "s/^index .*/index $before..$after 100644/" \
190 + "$TEST_DIRECTORY"/t4020/diff.NUL >expected-diff &&
191 + test_cmp expected-diff actual
192 '
193
194 test_expect_success 'GIT_EXTERNAL_DIFF with more than one changed files' '
@@ -237,7 +243,7 @@ test_expect_success 'diff --cached' '
243 git update-index --assume-unchanged file &&
244 echo second >file &&
245 git diff --cached >actual &&
240 - test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
246 + test_cmp expected-diff actual
247 '
248
249 test_expect_success 'clean up crlf leftovers' '