package vm

import (
	"godb/internals/buffer"
	"testing"
)

var inputBuffer = buffer.NewInputBuffer()

var statement = NewStatement()

func comapareExpectedAndRetruned(t *testing.T, result, expectedResult PrepareResults, resultingStype, expectedStype statementType) {
	if result != expectedResult && resultingStype == expectedStype {
		t.Errorf("Expected prepareResult and stype to be: (%v, %v), got: (%v,%v)\n", expectedResult, expectedStype, result, resultingStype)
	}
}

func TestPrepareStatementSelect(t *testing.T) {
	inputBuffer.Buffer = "select"

	result := statement.PrepareStatements(inputBuffer)

	comapareExpectedAndRetruned(t, result, PrepareSuccess, statement.stype, StatementSelect)
}

func TestPrepareStatementInsert(t *testing.T) {
	inputBuffer.Buffer = "insert 0 hello hello.com"

	result := statement.PrepareStatements(inputBuffer)

	comapareExpectedAndRetruned(t, result, PrepareSuccess, statement.stype, StatementInsert)
}

func TestPrepareStatementUnrecognized(t *testing.T) {
	inputBuffer.Buffer = "something"

	result := statement.PrepareStatements(inputBuffer)

	comapareExpectedAndRetruned(t, result, PrepareUnrecognised, statement.stype, StatementUnrecognized)
}

func TestPrepareStatementSyntaxError(t *testing.T) {
	inputBuffer.Buffer = "insert 0 hello"

	result := statement.PrepareStatements(inputBuffer)

	if result != PrepareSyntaxError {
		t.Errorf("Expected prepareResult to be: %v, got: %v\n", PrepareSyntaxError, result)
	}
}