Move parser to internal package

internal/sql/parser/parser_test.go

@@ -0,0 +1,46 @@
+package parser_test
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/genjidb/genji/internal/expr"
+	"github.com/genjidb/genji/internal/query"
+	"github.com/genjidb/genji/internal/sql/parser"
+	"github.com/genjidb/genji/internal/stream"
+)
+
+func TestParserMultiStatement(t *testing.T) {
+	tests := []struct {
+		name     string
+		s        string
+		expected []query.Statement
+	}{
+		{"OnlyCommas", ";;;", nil},
+		{"TrailingComma", "SELECT * FROM foo;;;DELETE FROM foo;", []query.Statement{
+			&query.StreamStmt{
+				Stream:   stream.New(stream.SeqScan("foo")).Pipe(stream.Project(expr.Wildcard{})),
+				ReadOnly: true,
+			},
+			&query.StreamStmt{
+				Stream: stream.New(stream.SeqScan("foo")).Pipe(stream.TableDelete("foo")),
+			},
+		}},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			q, err := parser.ParseQuery(test.s)
+			require.NoError(t, err)
+			require.EqualValues(t, test.expected, q.Statements)
+		})
+	}
+}
+
+func TestParserDivideByZero(t *testing.T) {
+	// See https://github.com/genjidb/genji/issues/268
+	require.NotPanics(t, func() {
+		_, _ = parser.ParseQuery("SELECT * FROM t LIMIT 0 % .5")
+	})
+}