MySQL cast expressions.

tests/mysql/cast_test.go

@@ -0,0 +1,60 @@
+package mysql
+
+import (
+	"github.com/go-jet/jet/internal/testutils"
+	. "github.com/go-jet/jet/mysql"
+	. "github.com/go-jet/jet/tests/.gentestdata/mysql/test_sample/table"
+	"gotest.tools/assert"
+	"testing"
+	"time"
+)
+
+func TestCast(t *testing.T) {
+
+	query := SELECT(
+		CAST(String("2011-02-02")).AS_DATE().AS("result.date"),
+		CAST(String("14:06:10")).AS_TIME().AS("result.time"),
+		CAST(String("2011-02-02 14:06:10")).AS_DATETIME().AS("result.datetime"),
+		CAST(Int(150)).AS_CHAR().AS("result.char"),
+		CAST(Int(5).SUB(Int(10))).AS_SIGNED().AS("result.signed"),
+		CAST(Int(5).ADD(Int(10))).AS_UNSIGNED().AS("result.unsigned"),
+		CAST(String("Some text")).AS_BINARY().AS("result.binary"),
+	).FROM(AllTypes)
+
+	testutils.AssertStatementSql(t, query, `
+SELECT CAST(? AS DATE) AS "result.date",
+     CAST(? AS TIME) AS "result.time",
+     CAST(? AS DATETIME) AS "result.datetime",
+     CAST(? AS CHAR) AS "result.char",
+     CAST((? - ?) AS SIGNED) AS "result.signed",
+     CAST((? + ?) AS UNSIGNED) AS "result.unsigned",
+     CAST(? AS BINARY) AS "result.binary"
+FROM test_sample.all_types;
+`, "2011-02-02", "14:06:10", "2011-02-02 14:06:10", int64(150), int64(5), int64(10), int64(5), int64(10), "Some text")
+
+	type Result struct {
+		Date     time.Time
+		Time     time.Time
+		DateTime time.Time
+		Char     string
+		Signed   int
+		Unsigned int
+		Binary   string
+	}
+
+	var dest Result
+
+	err := query.Query(db, &dest)
+
+	assert.NilError(t, err)
+
+	assert.DeepEqual(t, dest, Result{
+		Date:     *testutils.Date("2011-02-02"),
+		Time:     *testutils.TimeWithoutTimeZone("14:06:10"),
+		DateTime: *testutils.TimestampWithoutTimeZone("2011-02-02 14:06:10", 0),
+		Char:     "150",
+		Signed:   -5,
+		Unsigned: 15,
+		Binary:   "Some text",
+	})
+}