#!/bin/sh

global test_description := ''checkout handling of ambiguous (branch/tag) refs''
source ./test-lib.sh

test_expect_success 'setup ambiguous refs' '
	test_commit branch file &&
	git branch ambiguity &&
	git branch vagueness &&
	test_commit tag file &&
	git tag ambiguity &&
	git tag vagueness HEAD:file &&
	test_commit other file
'

test_expect_success 'checkout ambiguous ref succeeds' '
	git checkout ambiguity >stdout 2>stderr
'

test_expect_success 'checkout produces ambiguity warning' '
	grep "warning.*ambiguous" stderr
'

test_expect_success 'checkout chooses branch over tag' '
	echo refs/heads/ambiguity >expect &&
	git symbolic-ref HEAD >actual &&
	test_cmp expect actual &&
	echo branch >expect &&
	test_cmp expect file
'

test_expect_success 'checkout reports switch to branch' '
	test_i18ngrep "Switched to branch" stderr &&
	test_i18ngrep ! "^HEAD is now at" stderr
'

test_expect_success 'checkout vague ref succeeds' '
	git checkout vagueness >stdout 2>stderr &&
	test_set_prereq VAGUENESS_SUCCESS
'

test_expect_success VAGUENESS_SUCCESS 'checkout produces ambiguity warning' '
	grep "warning.*ambiguous" stderr
'

test_expect_success VAGUENESS_SUCCESS 'checkout chooses branch over tag' '
	echo refs/heads/vagueness >expect &&
	git symbolic-ref HEAD >actual &&
	test_cmp expect actual &&
	echo branch >expect &&
	test_cmp expect file
'

test_expect_success VAGUENESS_SUCCESS 'checkout reports switch to branch' '
	test_i18ngrep "Switched to branch" stderr &&
	test_i18ngrep ! "^HEAD is now at" stderr
'

test_done
(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:test_description)
          op: Equal
          rhs: {(SQ <"checkout handling of ambiguous (branch/tag) refs">)}
          spids: [4]
        )
      ]
      spids: [4]
    )
    (C {(.)} {(./test-lib.sh)})
    (C {(test_expect_success)} {(SQ <"setup ambiguous refs">)} 
      {
        (SQ <"\n"> <"\ttest_commit branch file &&\n"> <"\tgit branch ambiguity &&\n"> 
          <"\tgit branch vagueness &&\n"> <"\ttest_commit tag file &&\n"> <"\tgit tag ambiguity &&\n"> <"\tgit tag vagueness HEAD:file &&\n"> 
          <"\ttest_commit other file\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"checkout ambiguous ref succeeds">)} 
      {(SQ <"\n"> <"\tgit checkout ambiguity >stdout 2>stderr\n">)}
    )
    (C {(test_expect_success)} {(SQ <"checkout produces ambiguity warning">)} 
      {(SQ <"\n"> <"\tgrep \"warning.*ambiguous\" stderr\n">)}
    )
    (C {(test_expect_success)} {(SQ <"checkout chooses branch over tag">)} 
      {
        (SQ <"\n"> <"\techo refs/heads/ambiguity >expect &&\n"> 
          <"\tgit symbolic-ref HEAD >actual &&\n"> <"\ttest_cmp expect actual &&\n"> <"\techo branch >expect &&\n"> <"\ttest_cmp expect file\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"checkout reports switch to branch">)} 
      {
        (SQ <"\n"> <"\ttest_i18ngrep \"Switched to branch\" stderr &&\n"> 
          <"\ttest_i18ngrep ! \"^HEAD is now at\" stderr\n">
        )
      }
    )
    (C {(test_expect_success)} {(SQ <"checkout vague ref succeeds">)} 
      {
        (SQ <"\n"> <"\tgit checkout vagueness >stdout 2>stderr &&\n"> 
          <"\ttest_set_prereq VAGUENESS_SUCCESS\n">
        )
      }
    )
    (C {(test_expect_success)} {(VAGUENESS_SUCCESS)} {(SQ <"checkout produces ambiguity warning">)} 
      {(SQ <"\n"> <"\tgrep \"warning.*ambiguous\" stderr\n">)}
    )
    (C {(test_expect_success)} {(VAGUENESS_SUCCESS)} {(SQ <"checkout chooses branch over tag">)} 
      {
        (SQ <"\n"> <"\techo refs/heads/vagueness >expect &&\n"> 
          <"\tgit symbolic-ref HEAD >actual &&\n"> <"\ttest_cmp expect actual &&\n"> <"\techo branch >expect &&\n"> <"\ttest_cmp expect file\n">
        )
      }
    )
    (C {(test_expect_success)} {(VAGUENESS_SUCCESS)} {(SQ <"checkout reports switch to branch">)} 
      {
        (SQ <"\n"> <"\ttest_i18ngrep \"Switched to branch\" stderr &&\n"> 
          <"\ttest_i18ngrep ! \"^HEAD is now at\" stderr\n">
        )
      }
    )
    (C {(test_done)})
  ]
)