package link

import (
	"testing"
)

// The builds a walk may take are read from the build seat's own outcomes of its checks (novox/hq ADR 0350 §2): only
// checks of the walk's pull requests, only builds made, newest first.

// A build is read with the head its check judged, and a kept build is named as the check's that built it (novox/hq
// issue 703).

// Two spellings of a head are the same head only when both say at least twelve characters of it.
func TestSameHeadNeedsTwelveCharactersOfBoth(t *testing.T) {
	for _, c := range []struct {
		a, b string
		same bool
	}{
		{"aaaaaaaaaaaa", "aaaaaaaaaaaabbbb", true},
		{"aaaaaaaaaaaabbbb", "aaaaaaaaaaaa", true},
		{"aaaaaaaaaaaa", "aaaaaaaaaaab", false},
		{"", "", false},
		{"aaaa", "aaaaaaaaaaaa", false},
	} {
		if SameHead(c.a, c.b) != c.same {
			t.Errorf("SameHead(%q, %q) is %v", c.a, c.b, !c.same)
		}
	}
}