package q

import (
	"fmt"
	"testing"
)

type ParsingTest struct {
	input    string
	expected Query
}

func TestParseSelectStatement_StateMachine(t *testing.T) {
	var testSqlStatements = []ParsingTest{
		{
			input: "SELECT * FROM  users WHERE age >= 30",
			expected: &Select{
				Type:       SELECT,
				Table:      Table{Name: "users"},
				IsWildcard: true,
				Conditionals: []Conditional{
					{
						Key:      "age",
						Operator: ">=",
						Value:    "30",
					},
				},
			},
		},
	}

	for _, sql := range testSqlStatements {
		testName := fmt.Sprintf("%s", sql.input)
		expected := sql.expected.(*Select)

		t.Run(testName, func(t *testing.T) {
			answer, err := Parse(sql.input)
			if err != nil {
				t.Error(err)
				return
			}

			answerAsSelect := answer.(*Select)

			if answerAsSelect.Type != expected.Type {
				t.Errorf("got %d for Select.Type, expected %d", answerAsSelect.Type, expected.Type)
			}
			if answerAsSelect.IsWildcard != expected.IsWildcard {
				t.Errorf("got %#v for Select.IsWildcard, expected %#v", answerAsSelect.IsWildcard, expected.IsWildcard)
			}

		})
	}
}