day 8 work and jumbled together

utils/bits/bits_test.go

@@ -0,0 +1,28 @@
+package bits
+
+import (
+	"AoC2021/utils/assert"
+	"testing"
+)
+
+func TestGetBitCount(t *testing.T) {
+	assert.EqualsInt(t, GetBitCount(0), 0, "should count zero bits")
+	assert.EqualsInt(t, GetBitCount(15), 4, "should count bits")
+	assert.EqualsInt(t, GetBitCount(16), 1, "should not count empty bits")
+}
+func TestMatchingOnBits(t *testing.T) {
+	assert.EqualsInt(t, MatchingOnBits(5 /*101*/, 13 /*1101*/), 2, "should match 2 bits")
+}
+
+func TestBitwiseAnd(t *testing.T) {
+	assert.EqualsInt(t, BitwiseAnd(7 /*111*/, 18 /*10010*/), 23 /*10111*/, "should bitwise add")
+}
+
+func TestBitwiseAndA(t *testing.T) {
+	assert.EqualsInt(t, BitwiseAndA(1, 4, 8, 12), 13 /*1101*/, "should bitwise add lists")
+}
+
+func TestByBitCount(t *testing.T) {
+	twoBitFilter := ByBitCount(2)
+	assert.IsTrue(t, twoBitFilter(17 /*10001*/), "should count bits")
+}