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add basic tests for merge-tree 

merge-tree had no test cases, so here we add some very basic tests for
it, including some known-breakages.

[jc: with obvious/trivial fixups]

Signed-off-by: Will Palmer <wmpalmer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
maint
Will Palmer 15 years ago committed by Junio C Hamano
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  1. 257
      t/t4300-merge-tree.sh

257
t/t4300-merge-tree.sh
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@ -0,0 +1,257 @@ @@ -0,0 +1,257 @@
#!/bin/sh
#
# Copyright (c) 2010 Will Palmer
#

test_description='git merge-tree'
. ./test-lib.sh

test_expect_success setup '
test_commit "initial" "initial-file" "initial"
'

test_expect_success 'file add A, !B' '
cat >expected <<\EXPECTED &&
added in remote
their 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
@@ -0,0 +1 @@
+AAA
EXPECTED

git reset --hard initial &&
test_commit "add-a-not-b" "ONE" "AAA" &&
git merge-tree initial initial add-a-not-b >actual &&
test_cmp expected actual
'

test_expect_failure 'file add !A, B' '
cat >expected <<\EXPECTED &&
added in local
our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
EXPECTED

git reset --hard initial &&
test_commit "add-not-a-b" "ONE" "AAA" &&
git merge-tree initial add-not-a-b initial >actual &&
test_cmp expected actual
'

test_expect_success 'file add A, B (same)' '
cat >expected <<\EXPECTED &&
added in both
our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
their 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
EXPECTED

git reset --hard initial &&
test_commit "add-a-b-same-A" "ONE" "AAA" &&
git reset --hard initial &&
test_commit "add-a-b-same-B" "ONE" "AAA" &&
git merge-tree initial add-a-b-same-A add-a-b-same-B >actual &&
test_cmp expected actual
'

test_expect_success 'file add A, B (different)' '
cat >expected <<\EXPECTED &&
added in both
our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
their 100644 ba629238ca89489f2b350e196ca445e09d8bb834 ONE
@@ -1 +1,5 @@
+<<<<<<< .our
AAA
+=======
+BBB
+>>>>>>> .their
EXPECTED

git reset --hard initial &&
test_commit "add-a-b-diff-A" "ONE" "AAA" &&
git reset --hard initial &&
test_commit "add-a-b-diff-B" "ONE" "BBB" &&
git merge-tree initial add-a-b-diff-A add-a-b-diff-B >actual &&
test_cmp expected actual
'

test_expect_success 'file change A, !B' '
cat >expected <<\EXPECTED &&
EXPECTED

git reset --hard initial &&
test_commit "change-a-not-b" "initial-file" "BBB" &&
git merge-tree initial change-a-not-b initial >actual &&
test_cmp expected actual
'

test_expect_success 'file change !A, B' '
cat >expected <<\EXPECTED &&
merged
result 100644 ba629238ca89489f2b350e196ca445e09d8bb834 initial-file
our 100644 e79c5e8f964493290a409888d5413a737e8e5dd5 initial-file
@@ -1 +1 @@
-initial
+BBB
EXPECTED

git reset --hard initial &&
test_commit "change-not-a-b" "initial-file" "BBB" &&
git merge-tree initial initial change-not-a-b >actual &&
test_cmp expected actual
'

test_expect_success 'file change A, B (same)' '
cat >expected <<\EXPECTED &&
EXPECTED

git reset --hard initial &&
test_commit "change-a-b-same-A" "initial-file" "AAA" &&
git reset --hard initial &&
test_commit "change-a-b-same-B" "initial-file" "AAA" &&
git merge-tree initial change-a-b-same-A change-a-b-same-B >actual &&
test_cmp expected actual
'

test_expect_success 'file change A, B (different)' '
cat >expected <<\EXPECTED &&
changed in both
base 100644 e79c5e8f964493290a409888d5413a737e8e5dd5 initial-file
our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d initial-file
their 100644 ba629238ca89489f2b350e196ca445e09d8bb834 initial-file
@@ -1 +1,5 @@
+<<<<<<< .our
AAA
+=======
+BBB
+>>>>>>> .their
EXPECTED

git reset --hard initial &&
test_commit "change-a-b-diff-A" "initial-file" "AAA" &&
git reset --hard initial &&
test_commit "change-a-b-diff-B" "initial-file" "BBB" &&
git merge-tree initial change-a-b-diff-A change-a-b-diff-B >actual &&
test_cmp expected actual
'

test_expect_success 'file change A, B (mixed)' '
cat >expected <<\EXPECTED &&
changed in both
base 100644 f4f1f998c7776568c4ff38f516d77fef9399b5a7 ONE
our 100644 af14c2c3475337c73759d561ef70b59e5c731176 ONE
their 100644 372d761493f524d44d59bd24700c3bdf914c973c ONE
@@ -7,7 +7,11 @@
AAA
AAA
AAA
+<<<<<<< .our
BBB
+=======
+CCC
+>>>>>>> .their
AAA
AAA
AAA
EXPECTED

git reset --hard initial &&
test_commit "change-a-b-mix-base" "ONE" "
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA" &&
test_commit "change-a-b-mix-A" "ONE" \
"$(sed -e "1{s/AAA/BBB/;}" -e "10{s/AAA/BBB/;}" <ONE)" &&
git reset --hard change-a-b-mix-base &&
test_commit "change-a-b-mix-B" "ONE" \
"$(sed -e "1{s/AAA/BBB/;}" -e "10{s/AAA/CCC/;}" <ONE)" &&
git merge-tree change-a-b-mix-base change-a-b-mix-A change-a-b-mix-B \
>actual &&
test_cmp expected actual
'

test_expect_success 'file remove A, !B' '
cat >expected <<\EXPECTED &&
removed in local
base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
their 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
EXPECTED

git reset --hard initial &&
test_commit "rm-a-not-b-base" "ONE" "AAA" &&
git rm ONE &&
git commit -m "rm-a-not-b" &&
git tag "rm-a-not-b" &&
git merge-tree rm-a-not-b-base rm-a-not-b rm-a-not-b-base >actual &&
test_cmp expected actual
'

test_expect_failure 'file remove !A, B' '
cat >expected <<\EXPECTED &&
removed in remote
base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
our 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
@@ -1 +0,0 @@
-AAA
EXPECTED

git reset --hard initial &&
test_commit "rm-not-a-b-base" "ONE" "AAA" &&
git rm ONE &&
git commit -m "rm-not-a-b" &&
git tag "rm-not-a-b" &&
git merge-tree rm-a-not-b-base rm-a-not-b-base rm-a-not-b >actual &&
test_cmp expected actual
'

test_expect_failure 'file change A, remove B' '
cat >expected <<\EXPECTED &&
removed in remote
base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
our 100644 ba629238ca89489f2b350e196ca445e09d8bb834 ONE
@@ -1 +0,0 @@
-BBB
EXPECTED

git reset --hard initial &&
test_commit "change-a-rm-b-base" "ONE" "AAA" &&
test_commit "change-a-rm-b-A" "ONE" "BBB" &&
git reset --hard change-a-rm-b-base &&
git rm ONE &&
git commit -m "change-a-rm-b-B" &&
git tag "change-a-rm-b-B" &&
git merge-tree change-a-rm-b-base change-a-rm-b-A change-a-rm-b-B \
>actual &&
test_cmp expected actual
'

test_expect_success 'file remove A, change B' '
cat >expected <<\EXPECTED &&
removed in local
base 100644 43d5a8ed6ef6c00ff775008633f95787d088285d ONE
their 100644 ba629238ca89489f2b350e196ca445e09d8bb834 ONE
EXPECTED

git reset --hard initial &&
test_commit "rm-a-change-b-base" "ONE" "AAA" &&

git rm ONE &&
git commit -m "rm-a-change-b-A" &&
git tag "rm-a-change-b-A" &&
git reset --hard rm-a-change-b-base &&
test_commit "rm-a-change-b-B" "ONE" "BBB" &&
git merge-tree rm-a-change-b-base rm-a-change-b-A rm-a-change-b-B \
>actual &&
test_cmp expected actual
'

test_done
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