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-rwxr-xr-xt/t4068-diff-symmetric.sh91
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-#!/bin/sh
-
-test_description='behavior of diff with symmetric-diff setups'
-
-. ./test-lib.sh
-
-# build these situations:
-# - normal merge with one merge base (br1...b2r);
-# - criss-cross merge ie 2 merge bases (br1...master);
-# - disjoint subgraph (orphan branch, br3...master).
-#
-# B---E <-- master
-# / \ /
-# A X
-# \ / \
-# C---D--G <-- br1
-# \ /
-# ---F <-- br2
-#
-# H <-- br3
-#
-# We put files into a few commits so that we can verify the
-# output as well.
-
-test_expect_success setup '
- git commit --allow-empty -m A &&
- echo b >b &&
- git add b &&
- git commit -m B &&
- git checkout -b br1 HEAD^ &&
- echo c >c &&
- git add c &&
- git commit -m C &&
- git tag commit-C &&
- git merge -m D master &&
- git tag commit-D &&
- git checkout master &&
- git merge -m E commit-C &&
- git checkout -b br2 commit-C &&
- echo f >f &&
- git add f &&
- git commit -m F &&
- git checkout br1 &&
- git merge -m G br2 &&
- git checkout --orphan br3 &&
- git commit -m H
-'
-
-test_expect_success 'diff with one merge base' '
- git diff commit-D...br1 >tmp &&
- tail -n 1 tmp >actual &&
- echo +f >expect &&
- test_cmp expect actual
-'
-
-# The output (in tmp) can have +b or +c depending
-# on which merge base (commit B or C) is picked.
-# It should have one of those two, which comes out
-# to seven lines.
-test_expect_success 'diff with two merge bases' '
- git diff br1...master >tmp 2>err &&
- test_line_count = 7 tmp &&
- test_line_count = 1 err
-'
-
-test_expect_success 'diff with no merge bases' '
- test_must_fail git diff br2...br3 >tmp 2>err &&
- test_i18ngrep "fatal: br2...br3: no merge base" err
-'
-
-test_expect_success 'diff with too many symmetric differences' '
- test_must_fail git diff br1...master br2...br3 >tmp 2>err &&
- test_i18ngrep "usage" err
-'
-
-test_expect_success 'diff with symmetric difference and extraneous arg' '
- test_must_fail git diff master br1...master >tmp 2>err &&
- test_i18ngrep "usage" err
-'
-
-test_expect_success 'diff with two ranges' '
- test_must_fail git diff master br1..master br2..br3 >tmp 2>err &&
- test_i18ngrep "usage" err
-'
-
-test_expect_success 'diff with ranges and extra arg' '
- test_must_fail git diff master br1..master commit-D >tmp 2>err &&
- test_i18ngrep "usage" err
-'
-
-test_done