include nizhnyNovgorod contest

Signed-off-by: Iskander Sharipov <quasilyte@gmail.com>

README.md

@@ -18,6 +18,9 @@ How to participate:
 5. If CI tests will pass, your contribution will be merged.
 6. When PR is merged, you're awesome and can potentially win a prize.
 
+**Update**: [Nizhny Novgorod](https://vk.com/golang_nizhny) community can also participate.
+Just use `nizhnyNovgorod: true` field when adding a `gopher` entry.
+
 ## How the winner is selected
 
 We print winner after tests are finished.
@@ -30,7 +33,9 @@ Example (how "printed" winner may look like):
 
 ![](https://habrastorage.org/webt/kl/kk/k7/klkkk7zghbwmsuwefnaqxhyv3-y.jpeg)
 
-Pull Requests are accepted until 23:59 of September 30 (Moscow time).
+Deadlines:
+* Kazan: 23:59 of September 30 (Moscow time)
+* Nizhny Novgorod: 23:59 of October 1 (Moscow time)
 
 If there are less than 5 participants, we can't grant any gifts, therefore, invite your friends!
 

challenge.go

@@ -31,6 +31,8 @@ var gophers = []gopher{
 		post: "https://vk.com/bontequero?w=wall140207068_146",
 	},
 
+	// Participants from Nizhny Novgorod (https://vk.com/golang_nizhny):
+
 	// Testers. Do not need to contain a valid URL in post,
 	// but should use `tester: true` and can't win a prize.
 	{
@@ -84,6 +86,10 @@ type gopher struct {
 
 	// tester can submit invalid post string, but can't win a prize.
 	tester bool
+
+	// nizhnyNovgorod tells whether a participant is a part of Nizhny Novgorod
+	// Go community.
+	nizhnyNovgorod bool
 }
 
 // key returns a hopefully unique participant key.

challenge_test.go

@@ -6,10 +6,19 @@ import (
 	"time"
 )
 
+func runWinnerTest(t *testing.T, gophers []gopher) {
+	if len(gophers) >= 5 {
+		rand.Seed(time.Now().UTC().UnixNano())
+		winner := rand.Intn(len(gophers))
+		t.Logf("The winner is: %s!", gophers[winner].key())
+	} else {
+		t.Log("Not enough participants")
+	}
+}
+
 func TestWinner(t *testing.T) {
-	// filtered is a list of participating gophers.
-	// Basically, a gophers list without ignored members.
-	filtered := []gopher{}
+	kazanGophers := []gopher{}
+	nizhnyGophers := []gopher{}
 
 	// keys is a set of all participants keys.
 	// Needed to detect collisions.
@@ -36,14 +45,17 @@ func TestWinner(t *testing.T) {
 			continue
 		}
 
-		filtered = append(filtered, g)
+		if g.nizhnyNovgorod {
+			nizhnyGophers = append(nizhnyGophers, g)
+		} else {
+			kazanGophers = append(kazanGophers, g)
+		}
 	}
 
-	if len(filtered) >= 5 {
-		rand.Seed(time.Now().UTC().UnixNano())
-		winner := rand.Intn(len(filtered))
-		t.Logf("The winner is: %s!", filtered[winner].key())
-	} else {
-		t.Log("Not enough participants")
-	}
+	t.Run("Kazan", func(t *testing.T) {
+		runWinnerTest(t, kazanGophers)
+	})
+	t.Run("NizhnyNovgorod", func(t *testing.T) {
+		runWinnerTest(t, nizhnyGophers)
+	})
 }