qb: select

qb/select_test.go

@@ -0,0 +1,106 @@
+package qb
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestSelectBuilder(t *testing.T) {
+	m := mockExpr{
+		cql:   "expr",
+		names: []string{"expr"},
+	}
+
+	table := []struct {
+		B *SelectBuilder
+		N []string
+		S string
+	}{
+		// Basic test for select *
+		{
+			B: Select("cycling.cyclist_name"),
+			S: "SELECT * FROM cycling.cyclist_name ",
+		},
+		// Basic test for select columns
+		{
+			B: Select("cycling.cyclist_name").Columns("id", "user_uuid", "firstname"),
+			S: "SELECT id,user_uuid,firstname FROM cycling.cyclist_name ",
+		},
+		// Basic test for select distinct
+		{
+			B: Select("cycling.cyclist_name").Distinct("id"),
+			S: "SELECT DISTINCT id FROM cycling.cyclist_name ",
+		},
+		// Change table name
+		{
+			B: Select("cycling.cyclist_name").From("Foobar"),
+			S: "SELECT * FROM Foobar ",
+		},
+		// Add WHERE
+		{
+			B: Select("cycling.cyclist_name").Where(m).Where(mockExpr{
+				cql:   "expr_1",
+				names: []string{"expr_1"},
+			}, mockExpr{
+				cql:   "expr_2",
+				names: []string{"expr_2"},
+			}),
+			S: "SELECT * FROM cycling.cyclist_name WHERE expr AND expr_1 AND expr_2 ",
+			N: []string{"expr", "expr_1", "expr_2"},
+		},
+		// Add GROUP BY
+		{
+			B: Select("cycling.cyclist_name").Columns("MAX(stars) as max_stars").GroupBy("id"),
+			S: "SELECT id,MAX(stars) as max_stars FROM cycling.cyclist_name GROUP BY id ",
+		},
+		// Add ORDER BY
+		{
+			B: Select("cycling.cyclist_name").Where(m).OrderBy("firstname", ASC),
+			S: "SELECT * FROM cycling.cyclist_name WHERE expr ORDER BY firstname ASC ",
+			N: []string{"expr"},
+		},
+		// Add LIMIT
+		{
+			B: Select("cycling.cyclist_name").Where(m).Limit(10),
+			S: "SELECT * FROM cycling.cyclist_name WHERE expr LIMIT 10 ",
+			N: []string{"expr"},
+		},
+		// Add PER PARTITION LIMIT
+		{
+			B: Select("cycling.cyclist_name").Where(m).LimitPerPartition(10),
+			S: "SELECT * FROM cycling.cyclist_name WHERE expr PER PARTITION LIMIT 10 ",
+			N: []string{"expr"},
+		},
+		// Add ALLOW FILTERING
+		{
+			B: Select("cycling.cyclist_name").Where(m).AllowFiltering(),
+			S: "SELECT * FROM cycling.cyclist_name WHERE expr ALLOW FILTERING ",
+			N: []string{"expr"},
+		},
+	}
+
+	for _, test := range table {
+		stmt, names, err := test.B.ToCql()
+		if err != nil {
+			t.Error("unexpected error", err)
+		}
+		if diff := cmp.Diff(test.S, stmt); diff != "" {
+			t.Error(diff)
+		}
+		if diff := cmp.Diff(test.N, names); diff != "" {
+			t.Error(diff)
+		}
+	}
+}
+
+func BenchmarkSelectBuilder(b *testing.B) {
+	m := mockExpr{
+		cql:   "expr",
+		names: []string{"expr"},
+	}
+	b.ResetTimer()
+	for i := 0; i < b.N; i++ {
+		Select("cycling.cyclist_name").Columns("id", "user_uuid", "firstname", "stars").Where(m)
+	}
+}