Andrew's git - gitweb.git/blob - t/t4002-diff-basic.sh

   1#!/bin/sh
   2#
   3# Copyright (c) 2005 Junio C Hamano
   4#
   5
   6test_description='Test diff raw-output.
   7
   8'
   9. ./test-lib.sh
  10
  11. "$TEST_DIRECTORY"/lib-read-tree-m-3way.sh
  12
  13test_oid_init
  14
  15test_oid_cache <<\EOF
  16aa_1 sha1:ccba72ad3888a3520b39efcf780b9ee64167535d
  17aa_1 sha256:9febfbf18197819b2735c45291f138525d2476d59470f98239647544586ba403
  18
  19aa_2 sha1:6aa2b5335b16431a0ef71e5c0a28be69183cf6a2
  20aa_2 sha256:6eaa3437de83f145a4aaa6ba355303075ade547b128ec6a2cd00a81ff7ce7a56
  21
  22an_1 sha1:7e426fb079479fd67f6d81f984e4ec649a44bc25
  23an_1 sha256:8f92a0bec99e399a38e3bd0e1bf19fbf121e0160efb29b857df79d439f1c4536
  24
  25dd_1 sha1:bcc68ef997017466d5c9094bcf7692295f588c9a
  26dd_1 sha256:07e17428b00639b85485d2b01083d219e2f3e3ba8579e9ca44e9cc8dd554d952
  27
  28df_1 sha1:6d50f65d3bdab91c63444294d38f08aeff328e42
  29df_1 sha256:e367cecc27e9bf5451b1c65828cb21938d36a5f8e39c1b03ad6509cc36bb8e9d
  30
  31df_2 sha1:71420ab81e254145d26d6fc0cddee64c1acd4787
  32df_2 sha256:0f0a86d10347ff6921d03a3c954679f3f1d14fa3d5cd82f57b32c09755f3a47d
  33
  34dfd1 sha1:68a6d8b91da11045cf4aa3a5ab9f2a781c701249
  35dfd1 sha256:f3bd3265b02b6978ce86490d8ad026c573639c974b3de1d9faf30d8d5a77d3d5
  36
  37dm_1 sha1:141c1f1642328e4bc46a7d801a71da392e66791e
  38dm_1 sha256:c89f8656e7b94e21ee5fbaf0e2149bbf783c51edbe2ce110349cac13059ee7ed
  39
  40dm_2 sha1:3c4d8de5fbad08572bab8e10eef8dbb264cf0231
  41dm_2 sha256:83a572e37e0c94086294dae2cecc43d9131afd6f6c906e495c78972230b54988
  42
  43dn_1 sha1:35abde1506ddf806572ff4d407bd06885d0f8ee9
  44dn_1 sha256:775d5852582070e620be63327bfa515fab8f71c7ac3e4f0c3cd6267b4377ba28
  45
  46ll_2 sha1:1d41122ebdd7a640f29d3c9cc4f9d70094374762
  47ll_2 sha256:7917b4948a883cfed0a77d3d5a625dc8577d6ddcc3c6c3bbc56c4d4226a2246d
  48
  49md_1 sha1:03f24c8c4700babccfd28b654e7e8eac402ad6cd
  50md_1 sha256:fc9f30369b978595ad685ba11ca9a17de0af16d79cd4b629975f4f1590033902
  51
  52md_2 sha1:103d9f89b50b9aad03054b579be5e7aa665f2d57
  53md_2 sha256:fc78ec75275628762fe520479a6b2398dec295ce7aabcb1d15e5963c7b4e9317
  54
  55mm_1 sha1:b258508afb7ceb449981bd9d63d2d3e971bf8d34
  56mm_1 sha256:a4b7847d228e900e3000285e240c20fd96f9dd41ce1445305f6eada126d4a04a
  57
  58mm_2 sha1:b431b272d829ff3aa4d1a5085f4394ab4d3305b6
  59mm_2 sha256:3f8b83ea36aacf689bcf1a1290a9a8ed341564d32682ea6f76fea9a979186782
  60
  61mm_3 sha1:19989d4559aae417fedee240ccf2ba315ea4dc2b
  62mm_3 sha256:71b3bfc5747ac033fff9ea0ab39ee453a3af2969890e75d6ef547b87544e2681
  63
  64mn_1 sha1:bd084b0c27c7b6cc34f11d6d0509a29be3caf970
  65mn_1 sha256:47a67450583d7a329eb01a7c4ba644945af72c0ed2c7c95eb5a00d6e46d4d483
  66
  67mn_2 sha1:a716d58de4a570e0038f5c307bd8db34daea021f
  68mn_2 sha256:f95104c1ebe27acb84bac25a7be98c71f6b8d3054b21f357a5be0c524ad97e08
  69
  70nm_1 sha1:c8f25781e8f1792e3e40b74225e20553041b5226
  71nm_1 sha256:09baddc7afaa62e62e152c23c9c3ab94bf15a3894031e227e9be7fe68e1f4e49
  72
  73nm_2 sha1:cdb9a8c3da571502ac30225e9c17beccb8387983
  74nm_2 sha256:58b5227956ac2d2a08d0efa513c0ae37430948b16791ea3869a1308dbf05536d
  75
  76na_1 sha1:15885881ea69115351c09b38371f0348a3fb8c67
  77na_1 sha256:18e4fdd1670cd7968ee23d35bfd29e5418d56fb190c840094c1c57ceee0aad8f
  78
  79nd_1 sha1:a4e179e4291e5536a5e1c82e091052772d2c5a93
  80nd_1 sha256:07dac9b01d00956ea0c65bd993d7de4864aeef2ed3cbb1255d9f1d949fcd6df6
  81
  82ss_1 sha1:40c959f984c8b89a2b02520d17f00d717f024397
  83ss_1 sha256:50fc1b5df74d9910db2f9270993484235f15b69b75b01bcfb53e059289d14af9
  84
  85ss_2 sha1:2ac547ae9614a00d1b28275de608131f7a0e259f
  86ss_2 sha256:a90f02e6044f1497d13db587d22ab12f90150a7d1e084afcf96065fab35ae2bc
  87
  88tt_1 sha1:4ac13458899ab908ef3b1128fa378daefc88d356
  89tt_1 sha256:c53113c7dd5060e86b5b251428bd058f6726f66273c6a24bff1c61a04f498dd3
  90
  91tt_2 sha1:4c86f9a85fbc5e6804ee2e17a797538fbe785bca
  92tt_2 sha256:0775f2a296129a7cf2862b46bc0e88c14d593f2773a3e3fb1c5193db6f5a7e77
  93
  94tt_3 sha1:c4e4a12231b9fa79a0053cb6077fcb21bb5b135a
  95tt_3 sha256:47860f93cdd211f96443e0560f21c57ab6c2f4b0ac27ff03651a352e53fe8484
  96
  97z__1 sha1:7d670fdcdb9929f6c7dac196ff78689cd1c566a1
  98z__1 sha256:44d0f37aff5e51cfcfdd1134c93a6419bcca7b9964f792ffcd5f9b4fcba1ee63
  99
 100z__2 sha1:5e5f22072bb39f6e12cf663a57cb634c76eefb49
 101z__2 sha256:d29de162113190fed104eb5f010820cef4e315f89b9326e8497f7219fb737894
 102
 103z__3 sha1:1ba523955d5160681af65cb776411f574c1e8155
 104z__3 sha256:07422d772b07794ab4369a5648e617719f89c2d2212cbeab05d97214b6471636
 105
 106zaa1 sha1:8acb8e9750e3f644bf323fcf3d338849db106c77
 107zaa1 sha256:e79b029282c8abec2d9f3f7faceaf2a1405e02d1f368e66450ae66cf5b68d1f4
 108
 109zaa2 sha1:6c0b99286d0bce551ac4a7b3dff8b706edff3715
 110zaa2 sha256:c82bd78c3e69ea1796e6b1a7a3ba45bb106c50e819296475b862123d3f5cc5a0
 111
 112zan1 sha1:087494262084cefee7ed484d20c8dc0580791272
 113zan1 sha256:4b159eb3804d05599023dd074f771d06d02870f4ab24a7165add8ac3d703b8d3
 114
 115zdd1 sha1:879007efae624d2b1307214b24a956f0a8d686a8
 116zdd1 sha256:eecfdd4d8092dd0363fb6d4548b54c6afc8982c3ed9b34e393f1d6a921d8eaa3
 117
 118zdm1 sha1:9b541b2275c06e3a7b13f28badf5294e2ae63df4
 119zdm1 sha256:ab136e88e19a843c4bf7713d2090d5a2186ba16a6a80dacc12eeddd256a8e556
 120
 121zdm2 sha1:d77371d15817fcaa57eeec27f770c505ba974ec1
 122zdm2 sha256:1c1a5f57363f46a15d95ce8527b3c2c158d88d16853b4acbf81bd20fd2c89a46
 123
 124zdn1 sha1:beb5d38c55283d280685ea21a0e50cfcc0ca064a
 125zdn1 sha256:0f0eca66183617b0aa5ad74b256540329f841470922ca6760263c996d825eb18
 126
 127zmd1 sha1:d41fda41b7ec4de46b43cb7ea42a45001ae393d5
 128zmd1 sha256:1ed32d481852eddf31a0ce12652a0ad14bf5b7a842667b5dbb0b50f35bf1c80a
 129
 130zmd2 sha1:a79ac3be9377639e1c7d1edf1ae1b3a5f0ccd8a9
 131zmd2 sha256:b238da211b404f8917df2d9c6f7030535e904b2186131007a3c292ec6902f933
 132
 133zmm1 sha1:4ca22bae2527d3d9e1676498a0fba3b355bd1278
 134zmm1 sha256:072b1d85b5f34fabc99dfa46008c5418df68302d3e317430006f49b32d244226
 135
 136zmm2 sha1:61422ba9c2c873416061a88cd40a59a35b576474
 137zmm2 sha256:81dd5d2b3c5cda16fef552256aed4e2ea0802a8450a08f308a92142112ff6dda
 138
 139zmm3 sha1:697aad7715a1e7306ca76290a3dd4208fbaeddfa
 140zmm3 sha256:8b10fab49e9be3414aa5e9a93d0e46f9569053440138a7c19a5eb5536d8e95bf
 141
 142zmn1 sha1:b16d7b25b869f2beb124efa53467d8a1550ad694
 143zmn1 sha256:609e4f75d1295e844c826feeba213acb0b6cfc609adfe8ff705b19e3829ae3e9
 144
 145zmn2 sha1:a5c544c21cfcb07eb80a4d89a5b7d1570002edfd
 146zmn2 sha256:d6d03edf2dc1a3b267a8205de5f41a2ff4b03def8c7ae02052b543fb09d589fc
 147
 148zna1 sha1:d12979c22fff69c59ca9409e7a8fe3ee25eaee80
 149zna1 sha256:b37b80e789e8ea32aa323f004628f02013f632124b0282c7fe00a127d3c64c3c
 150
 151znd1 sha1:a18393c636b98e9bd7296b8b437ea4992b72440c
 152znd1 sha256:af92a22eee8c38410a0c9d2b5135a10aeb052cbc7cf675541ed9a67bfcaf7cf9
 153
 154znm1 sha1:3fdbe17fd013303a2e981e1ca1c6cd6e72789087
 155znm1 sha256:f75aeaa0c11e76918e381c105f0752932c6150e941fec565d24fa31098a13dc1
 156
 157znm2 sha1:7e09d6a3a14bd630913e8c75693cea32157b606d
 158znm2 sha256:938d73cfbaa1c902a84fb5b3afd9736aa0590367fb9bd59c6c4d072ce70fcd6d
 159EOF
 160
 161cat >.test-plain-OA <<EOF
 162:000000 100644 $(test_oid zero) $(test_oid aa_1) A      AA
 163:000000 100644 $(test_oid zero) $(test_oid an_1) A      AN
 164:100644 000000 $(test_oid dd_1) $(test_oid zero) D      DD
 165:000000 040000 $(test_oid zero) $(test_oid df_1) A      DF
 166:100644 000000 $(test_oid dm_1) $(test_oid zero) D      DM
 167:100644 000000 $(test_oid dn_1) $(test_oid zero) D      DN
 168:000000 100644 $(test_oid zero) $(test_oid ll_2) A      LL
 169:100644 100644 $(test_oid md_1) $(test_oid md_2) M      MD
 170:100644 100644 $(test_oid mm_1) $(test_oid mm_2) M      MM
 171:100644 100644 $(test_oid mn_1) $(test_oid mn_2) M      MN
 172:100644 100644 $(test_oid ss_1) $(test_oid ss_2) M      SS
 173:100644 100644 $(test_oid tt_1) $(test_oid tt_2) M      TT
 174:040000 040000 $(test_oid z__1) $(test_oid z__2) M      Z
 175EOF
 176
 177cat >.test-recursive-OA <<EOF
 178:000000 100644 $(test_oid zero) $(test_oid aa_1) A      AA
 179:000000 100644 $(test_oid zero) $(test_oid an_1) A      AN
 180:100644 000000 $(test_oid dd_1) $(test_oid zero) D      DD
 181:000000 100644 $(test_oid zero) $(test_oid dfd1) A      DF/DF
 182:100644 000000 $(test_oid dm_1) $(test_oid zero) D      DM
 183:100644 000000 $(test_oid dn_1) $(test_oid zero) D      DN
 184:000000 100644 $(test_oid zero) $(test_oid ll_2) A      LL
 185:100644 100644 $(test_oid md_1) $(test_oid md_2) M      MD
 186:100644 100644 $(test_oid mm_1) $(test_oid mm_2) M      MM
 187:100644 100644 $(test_oid mn_1) $(test_oid mn_2) M      MN
 188:100644 100644 $(test_oid ss_1) $(test_oid ss_2) M      SS
 189:100644 100644 $(test_oid tt_1) $(test_oid tt_2) M      TT
 190:000000 100644 $(test_oid zero) $(test_oid zaa1) A      Z/AA
 191:000000 100644 $(test_oid zero) $(test_oid zan1) A      Z/AN
 192:100644 000000 $(test_oid zdd1) $(test_oid zero) D      Z/DD
 193:100644 000000 $(test_oid zdm1) $(test_oid zero) D      Z/DM
 194:100644 000000 $(test_oid zdn1) $(test_oid zero) D      Z/DN
 195:100644 100644 $(test_oid zmd1) $(test_oid zmd2) M      Z/MD
 196:100644 100644 $(test_oid zmm1) $(test_oid zmm2) M      Z/MM
 197:100644 100644 $(test_oid zmn1) $(test_oid zmn2) M      Z/MN
 198EOF
 199cat >.test-plain-OB <<EOF
 200:000000 100644 $(test_oid zero) $(test_oid aa_2) A      AA
 201:100644 000000 $(test_oid dd_1) $(test_oid zero) D      DD
 202:000000 100644 $(test_oid zero) $(test_oid df_2) A      DF
 203:100644 100644 $(test_oid dm_1) $(test_oid dm_2) M      DM
 204:000000 100644 $(test_oid zero) $(test_oid ll_2) A      LL
 205:100644 000000 $(test_oid md_1) $(test_oid zero) D      MD
 206:100644 100644 $(test_oid mm_1) $(test_oid mm_3) M      MM
 207:000000 100644 $(test_oid zero) $(test_oid na_1) A      NA
 208:100644 000000 $(test_oid nd_1) $(test_oid zero) D      ND
 209:100644 100644 $(test_oid nm_1) $(test_oid nm_2) M      NM
 210:100644 100644 $(test_oid ss_1) $(test_oid ss_2) M      SS
 211:100644 100644 $(test_oid tt_1) $(test_oid tt_3) M      TT
 212:040000 040000 $(test_oid z__1) $(test_oid z__3) M      Z
 213EOF
 214cat >.test-recursive-OB <<EOF
 215:000000 100644 $(test_oid zero) $(test_oid aa_2) A      AA
 216:100644 000000 $(test_oid dd_1) $(test_oid zero) D      DD
 217:000000 100644 $(test_oid zero) $(test_oid df_2) A      DF
 218:100644 100644 $(test_oid dm_1) $(test_oid dm_2) M      DM
 219:000000 100644 $(test_oid zero) $(test_oid ll_2) A      LL
 220:100644 000000 $(test_oid md_1) $(test_oid zero) D      MD
 221:100644 100644 $(test_oid mm_1) $(test_oid mm_3) M      MM
 222:000000 100644 $(test_oid zero) $(test_oid na_1) A      NA
 223:100644 000000 $(test_oid nd_1) $(test_oid zero) D      ND
 224:100644 100644 $(test_oid nm_1) $(test_oid nm_2) M      NM
 225:100644 100644 $(test_oid ss_1) $(test_oid ss_2) M      SS
 226:100644 100644 $(test_oid tt_1) $(test_oid tt_3) M      TT
 227:000000 100644 $(test_oid zero) $(test_oid zaa2) A      Z/AA
 228:100644 000000 $(test_oid zdd1) $(test_oid zero) D      Z/DD
 229:100644 100644 $(test_oid zdm1) $(test_oid zdm2) M      Z/DM
 230:100644 000000 $(test_oid zmd1) $(test_oid zero) D      Z/MD
 231:100644 100644 $(test_oid zmm1) $(test_oid zmm3) M      Z/MM
 232:000000 100644 $(test_oid zero) $(test_oid zna1) A      Z/NA
 233:100644 000000 $(test_oid znd1) $(test_oid zero) D      Z/ND
 234:100644 100644 $(test_oid znm1) $(test_oid znm2) M      Z/NM
 235EOF
 236cat >.test-plain-AB <<EOF
 237:100644 100644 $(test_oid aa_1) $(test_oid aa_2) M      AA
 238:100644 000000 $(test_oid an_1) $(test_oid zero) D      AN
 239:000000 100644 $(test_oid zero) $(test_oid df_2) A      DF
 240:040000 000000 $(test_oid df_1) $(test_oid zero) D      DF
 241:000000 100644 $(test_oid zero) $(test_oid dm_2) A      DM
 242:000000 100644 $(test_oid zero) $(test_oid dn_1) A      DN
 243:100644 000000 $(test_oid md_2) $(test_oid zero) D      MD
 244:100644 100644 $(test_oid mm_2) $(test_oid mm_3) M      MM
 245:100644 100644 $(test_oid mn_2) $(test_oid mn_1) M      MN
 246:000000 100644 $(test_oid zero) $(test_oid na_1) A      NA
 247:100644 000000 $(test_oid nd_1) $(test_oid zero) D      ND
 248:100644 100644 $(test_oid nm_1) $(test_oid nm_2) M      NM
 249:100644 100644 $(test_oid tt_2) $(test_oid tt_3) M      TT
 250:040000 040000 $(test_oid z__2) $(test_oid z__3) M      Z
 251EOF
 252cat >.test-recursive-AB <<EOF
 253:100644 100644 $(test_oid aa_1) $(test_oid aa_2) M      AA
 254:100644 000000 $(test_oid an_1) $(test_oid zero) D      AN
 255:000000 100644 $(test_oid zero) $(test_oid df_2) A      DF
 256:100644 000000 $(test_oid dfd1) $(test_oid zero) D      DF/DF
 257:000000 100644 $(test_oid zero) $(test_oid dm_2) A      DM
 258:000000 100644 $(test_oid zero) $(test_oid dn_1) A      DN
 259:100644 000000 $(test_oid md_2) $(test_oid zero) D      MD
 260:100644 100644 $(test_oid mm_2) $(test_oid mm_3) M      MM
 261:100644 100644 $(test_oid mn_2) $(test_oid mn_1) M      MN
 262:000000 100644 $(test_oid zero) $(test_oid na_1) A      NA
 263:100644 000000 $(test_oid nd_1) $(test_oid zero) D      ND
 264:100644 100644 $(test_oid nm_1) $(test_oid nm_2) M      NM
 265:100644 100644 $(test_oid tt_2) $(test_oid tt_3) M      TT
 266:100644 100644 $(test_oid zaa1) $(test_oid zaa2) M      Z/AA
 267:100644 000000 $(test_oid zan1) $(test_oid zero) D      Z/AN
 268:000000 100644 $(test_oid zero) $(test_oid zdm2) A      Z/DM
 269:000000 100644 $(test_oid zero) $(test_oid zdn1) A      Z/DN
 270:100644 000000 $(test_oid zmd2) $(test_oid zero) D      Z/MD
 271:100644 100644 $(test_oid zmm2) $(test_oid zmm3) M      Z/MM
 272:100644 100644 $(test_oid zmn2) $(test_oid zmn1) M      Z/MN
 273:000000 100644 $(test_oid zero) $(test_oid zna1) A      Z/NA
 274:100644 000000 $(test_oid znd1) $(test_oid zero) D      Z/ND
 275:100644 100644 $(test_oid znm1) $(test_oid znm2) M      Z/NM
 276EOF
 277
 278cmp_diff_files_output () {
 279    # diff-files never reports additions.  Also it does not fill in the
 280    # object ID for the changed files because it wants you to look at the
 281    # filesystem.
 282    sed <"$2" >.test-tmp \
 283        -e '/^:000000 /d;s/'$OID_REGEX'\( [MCRNDU][0-9]*\)      /'$ZERO_OID'\1  /' &&
 284    test_cmp "$1" .test-tmp
 285}
 286
 287test_expect_success \
 288    'diff-tree of known trees.' \
 289    'git diff-tree $tree_O $tree_A >.test-a &&
 290     cmp -s .test-a .test-plain-OA'
 291
 292test_expect_success \
 293    'diff-tree of known trees.' \
 294    'git diff-tree -r $tree_O $tree_A >.test-a &&
 295     cmp -s .test-a .test-recursive-OA'
 296
 297test_expect_success \
 298    'diff-tree of known trees.' \
 299    'git diff-tree $tree_O $tree_B >.test-a &&
 300     cmp -s .test-a .test-plain-OB'
 301
 302test_expect_success \
 303    'diff-tree of known trees.' \
 304    'git diff-tree -r $tree_O $tree_B >.test-a &&
 305     cmp -s .test-a .test-recursive-OB'
 306
 307test_expect_success \
 308    'diff-tree of known trees.' \
 309    'git diff-tree $tree_A $tree_B >.test-a &&
 310     cmp -s .test-a .test-plain-AB'
 311
 312test_expect_success \
 313    'diff-tree of known trees.' \
 314    'git diff-tree -r $tree_A $tree_B >.test-a &&
 315     cmp -s .test-a .test-recursive-AB'
 316
 317test_expect_success \
 318    'diff-tree --stdin of known trees.' \
 319    'echo $tree_A $tree_B | git diff-tree --stdin > .test-a &&
 320     echo $tree_A $tree_B > .test-plain-ABx &&
 321     cat .test-plain-AB >> .test-plain-ABx &&
 322     cmp -s .test-a .test-plain-ABx'
 323
 324test_expect_success \
 325    'diff-tree --stdin of known trees.' \
 326    'echo $tree_A $tree_B | git diff-tree -r --stdin > .test-a &&
 327     echo $tree_A $tree_B > .test-recursive-ABx &&
 328     cat .test-recursive-AB >> .test-recursive-ABx &&
 329     cmp -s .test-a .test-recursive-ABx'
 330
 331test_expect_success \
 332    'diff-cache O with A in cache' \
 333    'git read-tree $tree_A &&
 334     git diff-index --cached $tree_O >.test-a &&
 335     cmp -s .test-a .test-recursive-OA'
 336
 337test_expect_success \
 338    'diff-cache O with B in cache' \
 339    'git read-tree $tree_B &&
 340     git diff-index --cached $tree_O >.test-a &&
 341     cmp -s .test-a .test-recursive-OB'
 342
 343test_expect_success \
 344    'diff-cache A with B in cache' \
 345    'git read-tree $tree_B &&
 346     git diff-index --cached $tree_A >.test-a &&
 347     cmp -s .test-a .test-recursive-AB'
 348
 349test_expect_success \
 350    'diff-files with O in cache and A checked out' \
 351    'rm -fr Z [A-Z][A-Z] &&
 352     git read-tree $tree_A &&
 353     git checkout-index -f -a &&
 354     git read-tree --reset $tree_O &&
 355     test_must_fail git update-index --refresh -q &&
 356     git diff-files >.test-a &&
 357     cmp_diff_files_output .test-a .test-recursive-OA'
 358
 359test_expect_success \
 360    'diff-files with O in cache and B checked out' \
 361    'rm -fr Z [A-Z][A-Z] &&
 362     git read-tree $tree_B &&
 363     git checkout-index -f -a &&
 364     git read-tree --reset $tree_O &&
 365     test_must_fail git update-index --refresh -q &&
 366     git diff-files >.test-a &&
 367     cmp_diff_files_output .test-a .test-recursive-OB'
 368
 369test_expect_success \
 370    'diff-files with A in cache and B checked out' \
 371    'rm -fr Z [A-Z][A-Z] &&
 372     git read-tree $tree_B &&
 373     git checkout-index -f -a &&
 374     git read-tree --reset $tree_A &&
 375     test_must_fail git update-index --refresh -q &&
 376     git diff-files >.test-a &&
 377     cmp_diff_files_output .test-a .test-recursive-AB'
 378
 379################################################################
 380# Now we have established the baseline, we do not have to
 381# rely on individual object ID values that much.
 382
 383test_expect_success \
 384    'diff-tree O A == diff-tree -R A O' \
 385    'git diff-tree $tree_O $tree_A >.test-a &&
 386    git diff-tree -R $tree_A $tree_O >.test-b &&
 387    cmp -s .test-a .test-b'
 388
 389test_expect_success \
 390    'diff-tree -r O A == diff-tree -r -R A O' \
 391    'git diff-tree -r $tree_O $tree_A >.test-a &&
 392    git diff-tree -r -R $tree_A $tree_O >.test-b &&
 393    cmp -s .test-a .test-b'
 394
 395test_expect_success \
 396    'diff-tree B A == diff-tree -R A B' \
 397    'git diff-tree $tree_B $tree_A >.test-a &&
 398    git diff-tree -R $tree_A $tree_B >.test-b &&
 399    cmp -s .test-a .test-b'
 400
 401test_expect_success \
 402    'diff-tree -r B A == diff-tree -r -R A B' \
 403    'git diff-tree -r $tree_B $tree_A >.test-a &&
 404    git diff-tree -r -R $tree_A $tree_B >.test-b &&
 405    cmp -s .test-a .test-b'
 406
 407test_expect_success \
 408    'diff can read from stdin' \
 409    'test_must_fail git diff --no-index -- MN - < NN |
 410        grep -v "^index" | sed "s#/-#/NN#" >.test-a &&
 411    test_must_fail git diff --no-index -- MN NN |
 412        grep -v "^index" >.test-b &&
 413    test_cmp .test-a .test-b'
 414
 415test_done