#!/bin/sh

global test_description := ''blaming trough history with topic branches''
source ./test-lib.sh

# Creates the history shown below. '*'s mark the first parent in the merges.
# The only line of file.t is changed in commit B2
#
#        +---C1
#       /      \
# A0--A1--*A2--*A3
#   \     /
#    B1-B2
#
test_expect_success setup '
	test_commit A0 file.t line0 &&
	test_commit A1 &&
	git reset --hard A0 &&
	test_commit B1 &&
	test_commit B2 file.t line0changed &&
	git reset --hard A1 &&
	test_merge A2 B2 &&
	git reset --hard A1 &&
	test_commit C1 &&
	git reset --hard A2 &&
	test_merge A3 C1
	'

test_expect_success 'blame --reverse --first-parent finds A1' '
	git blame --porcelain --reverse --first-parent A0..A3 -- file.t >actual_full &&
	head -n 1 <actual_full | sed -e "s/ .*//" >actual &&
	git rev-parse A1 >expect &&
	test_cmp expect actual
	'

test_done
(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <"blaming trough history with topic branches">)}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(test_expect_success)} {(setup)} 
      {
        (SQ <"\n"> <"\ttest_commit A0 file.t line0 &&\n"> <"\ttest_commit A1 &&\n"> 
          <"\tgit reset --hard A0 &&\n"> <"\ttest_commit B1 &&\n"> <"\ttest_commit B2 file.t line0changed &&\n"> <"\tgit reset --hard A1 &&\n"> 
          <"\ttest_merge A2 B2 &&\n"> <"\tgit reset --hard A1 &&\n"> <"\ttest_commit C1 &&\n"> <"\tgit reset --hard A2 &&\n"> 
          <"\ttest_merge A3 C1\n"> <"\t">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"blame --reverse --first-parent finds A1">)} 
      {
        (SQ <"\n"> 
          <"\tgit blame --porcelain --reverse --first-parent A0..A3 -- file.t >actual_full &&\n"> <"\thead -n 1 <actual_full | sed -e \"s/ .*//\" >actual &&\n"> <"\tgit rev-parse A1 >expect &&\n"> 
          <"\ttest_cmp expect actual\n"> <"\t">
        )
      }
    )
    (C {(test_done)})
  ]
)