Move parser to internal package

internal/sql/parser/explain_test.go

@@ -0,0 +1,36 @@
+package parser_test
+
+import (
+	"testing"
+
+	"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"
+	"github.com/stretchr/testify/require"
+)
+
+func TestParserExplain(t *testing.T) {
+	tests := []struct {
+		name     string
+		s        string
+		expected query.Statement
+		errored  bool
+	}{
+		{"Explain create table", "EXPLAIN SELECT * FROM test", &query.ExplainStmt{Statement: &query.StreamStmt{Stream: stream.New(stream.SeqScan("test")).Pipe(stream.Project(expr.Wildcard{})), ReadOnly: true}}, false},
+		{"Multiple Explains", "EXPLAIN EXPLAIN CREATE TABLE test", nil, true},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			q, err := parser.ParseQuery(test.s)
+			if test.errored {
+				require.Error(t, err)
+				return
+			}
+			require.NoError(t, err)
+			require.Len(t, q.Statements, 1)
+			require.EqualValues(t, test.expected, q.Statements[0])
+		})
+	}
+}