package mysql

import (
	"testing"

	"git.warky.dev/wdevs/relspecgo/pkg/models"
	"git.warky.dev/wdevs/relspecgo/pkg/readers"
)

func TestReaderMapDataType(t *testing.T) {
	r := NewReader(&readers.ReaderOptions{})
	for _, tc := range []struct{ input, want string }{{"varchar(64)", "string"}, {"bigint unsigned", "uint64"}, {"datetime", "timestamp"}, {"json", "json"}} {
		if got := r.mapDataType(tc.input); got != tc.want {
			t.Errorf("mapDataType(%q) = %q, want %q", tc.input, got, tc.want)
		}
	}
}

func TestReaderRequiresConnectionString(t *testing.T) {
	if _, err := NewReader(&readers.ReaderOptions{}).ReadDatabase(); err == nil {
		t.Fatal("expected missing connection string error")
	}
}

func TestRelationshipNamesCannotCollapseDistinctForeignKeys(t *testing.T) {
	table := models.InitTable("t", "app")
	reader := NewReader(&readers.ReaderOptions{})
	for _, c := range []*models.Constraint{
		{Name: "a_to_b", ReferencedTable: "c"},
		{Name: "a", ReferencedTable: "b_to_c"},
	} {
		reader.deriveRelationship(table, c)
	}
	if len(table.Relationships) != 2 {
		t.Fatalf("distinct foreign keys collapsed: %+v", table.Relationships)
	}
}