qb: batch builder

qb/batch_test.go

@@ -0,0 +1,80 @@
+package qb
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+type mockBuilder struct {
+	stmt  string
+	names []string
+}
+
+func (b mockBuilder) ToCql() (stmt string, names []string) {
+	return b.stmt, b.names
+}
+
+func TestBatchBuilder(t *testing.T) {
+	m := mockBuilder{"INSERT INTO cycling.cyclist_name (id,user_uuid,firstname) VALUES (?,?,?) ", []string{"id", "user_uuid", "firstname"}}
+
+	table := []struct {
+		B *BatchBuilder
+		N []string
+		S string
+	}{
+		// Basic test for Batch
+		{
+			B: Batch().Add("a.", m),
+			S: "BEGIN BATCH INSERT INTO cycling.cyclist_name (id,user_uuid,firstname) VALUES (?,?,?) ; APPLY BATCH ",
+			N: []string{"a.id", "a.user_uuid", "a.firstname"},
+		},
+		// Add statement
+		{
+			B: Batch().
+				Add("a.", m).
+				Add("b.", m),
+			S: "BEGIN BATCH INSERT INTO cycling.cyclist_name (id,user_uuid,firstname) VALUES (?,?,?) ; INSERT INTO cycling.cyclist_name (id,user_uuid,firstname) VALUES (?,?,?) ; APPLY BATCH ",
+			N: []string{"a.id", "a.user_uuid", "a.firstname", "b.id", "b.user_uuid", "b.firstname"},
+		},
+		// Add UNLOGGED
+		{
+			B: Batch().UnLogged(),
+			S: "BEGIN UNLOGGED BATCH APPLY BATCH ",
+		},
+		// Add COUNTER
+		{
+			B: Batch().Counter(),
+			S: "BEGIN COUNTER BATCH APPLY BATCH ",
+		},
+		// Add TTL
+		{
+			B: Batch().TTL(),
+			S: "BEGIN BATCH USING TTL ? APPLY BATCH ",
+			N: []string{"_ttl"},
+		},
+		// Add TIMESTAMP
+		{
+			B: Batch().Timestamp(),
+			S: "BEGIN BATCH USING TIMESTAMP ? APPLY BATCH ",
+			N: []string{"_ts"},
+		},
+	}
+
+	for _, test := range table {
+		stmt, names := test.B.ToCql()
+		if diff := cmp.Diff(test.S, stmt); diff != "" {
+			t.Error(diff)
+		}
+		if diff := cmp.Diff(test.N, names); diff != "" {
+			t.Error(diff)
+		}
+	}
+}
+
+func BenchmarkBatchBuilder(b *testing.B) {
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Batch().Add("", mockBuilder{"INSERT INTO cycling.cyclist_name (id,user_uuid,firstname) VALUES (?,?,?) ", []string{"id", "user_uuid", "firstname"}}).ToCql()
+	}
+}