test: move test helper into test file

geom/permute.go

@@ -1,41 +0,0 @@
-// Copyright (c) 2011 CZ.NIC z.s.p.o. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// blame: jnml, labs.nic.cz
-
-package geom
-
-import (
-	"sort"
-)
-
-// Generate the first permutation of data.
-func permutationFirst(data sort.Interface) {
-	sort.Sort(data)
-}
-
-// Generate the next permutation of data if possible and return true.
-// If there is no more permutation left return false.
-// Based on the algorithm described here:
-// http://en.wikipedia.org/wiki/Permutation#Generation_in_lexicographic_order
-func permutationNext(data sort.Interface) bool {
-	var k, l int
-	for k = data.Len() - 2; ; k-- { // 1.
-		if k < 0 {
-			return false
-		}
-
-		if data.Less(k, k+1) {
-			break
-		}
-	}
-	for l = data.Len() - 1; !data.Less(k, l); l-- { // 2.
-	}
-	data.Swap(k, l)                             // 3.
-	for i, j := k+1, data.Len()-1; i < j; i++ { // 4.
-		data.Swap(i, j)
-		j--
-	}
-	return true
-}

geom/ring_test.go

@@ -211,3 +211,39 @@ func TestRingMergePermutations(t *testing.T) {
 		}
 	}
 }
+
+// Copyright (c) 2011 CZ.NIC z.s.p.o. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// blame: jnml, labs.nic.cz
+
+// Generate the first permutation of data.
+func permutationFirst(data sort.Interface) {
+	sort.Sort(data)
+}
+
+// Generate the next permutation of data if possible and return true.
+// If there is no more permutation left return false.
+// Based on the algorithm described here:
+// http://en.wikipedia.org/wiki/Permutation#Generation_in_lexicographic_order
+func permutationNext(data sort.Interface) bool {
+	var k, l int
+	for k = data.Len() - 2; ; k-- { // 1.
+		if k < 0 {
+			return false
+		}
+
+		if data.Less(k, k+1) {
+			break
+		}
+	}
+	for l = data.Len() - 1; !data.Less(k, l); l-- { // 2.
+	}
+	data.Swap(k, l)                             // 3.
+	for i, j := k+1, data.Len()-1; i < j; i++ { // 4.
+		data.Swap(i, j)
+		j--
+	}
+	return true
+}