grim/hgkeeper

Add some additional used tests for find hgrcs for repo and fix a bug
package hg
import (
"testing"
"github.com/stretchr/testify/assert"
)
func TestFindHgrcsForRepoSimple(t *testing.T) {
actual := findHgrcsForRepo("grim/hgkeeper")
expected := []string{
"config/hgrc",
"config/grim/hgrc",
"config/grim/hgkeeper/hgrc",
}
assert.Equal(t, expected, actual)
}
func TestFindHgrcsForRepoEmpty(t *testing.T) {
actual := findHgrcsForRepo("")
expected := []string{
"config/hgrc",
}
assert.Equal(t, expected, actual)
}
func TestFindHgrcsForRepoDot(t *testing.T) {
actual := findHgrcsForRepo(".")
expected := []string{
"config/hgrc",
}
assert.Equal(t, expected, actual)
}