#!/bin/sh

test_description='checkout handling of ambiguous (branch/tag) refs'
. ./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 C_LOCALE_OUTPUT 'checkout reports switch to branch' '
        grep "Switched to branch" stderr &&
        ! grep "^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,C_LOCALE_OUTPUT 'checkout reports switch to branch' '
        grep "Switched to branch" stderr &&
        ! grep "^HEAD is now at" stderr
'

test_done