diff --git a/pkg/exchangerates/international_monetary_fund_datasource_test.go b/pkg/exchangerates/international_monetary_fund_datasource_test.go
index 9ce9a3af..455ca31d 100644
--- a/pkg/exchangerates/international_monetary_fund_datasource_test.go
+++ b/pkg/exchangerates/international_monetary_fund_datasource_test.go
@@ -1 +1,130 @@
 package exchangerates
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/mayswind/ezbookkeeping/pkg/core"
+	"github.com/mayswind/ezbookkeeping/pkg/models"
+)
+
+const internationalMonetaryFundMinimumRequiredContent = "SDRs per Currency unit and Currency units per SDR (1)\n" +
+	"last five days\n" +
+	"SDRs per Currency unit (2)\n" +
+	"\n" +
+	"Currency\tAugust 28, 2024\tAugust 27, 2024\tAugust 26, 2024\tAugust 23, 2024\tAugust 22, 2024\n" +
+	"Chinese yuan\t0.1040520000\t0.1039250000\t0.1040370000\t0.1040850000\t0.1040570000\n" +
+	"U.S. dollar\t0.7417320000\t0.7410250000\t0.7408270000\t0.7429280000\t0.7423020000\n"
+
+func TestInternationalMonetaryFundDataSource_StandardDataExtractBaseCurrency(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte(internationalMonetaryFundMinimumRequiredContent))
+	assert.Equal(t, nil, err)
+	assert.Equal(t, "USD", actualLatestExchangeRateResponse.BaseCurrency)
+}
+
+func TestInternationalMonetaryFundDataSource_StandardDataExtractExchangeRates(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte(internationalMonetaryFundMinimumRequiredContent))
+	assert.Equal(t, nil, err)
+	assert.Contains(t, actualLatestExchangeRateResponse.ExchangeRates, &models.LatestExchangeRate{
+		Currency: "USD",
+		Rate:     "1",
+	})
+	assert.Contains(t, actualLatestExchangeRateResponse.ExchangeRates, &models.LatestExchangeRate{
+		Currency: "CNY",
+		Rate:     "7.128474224426247",
+	})
+}
+
+func TestInternationalMonetaryFundDataSource_BlankContent(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte(""))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestInternationalMonetaryFundDataSource_OnlyHeader(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte("SDRs per Currency unit and Currency units per SDR (1)\n"+
+		"last five days\n"+
+		"SDRs per Currency unit (2)"))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestInternationalMonetaryFundDataSource_OnlyHeaderAndTitle(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte("SDRs per Currency unit and Currency units per SDR (1)\n"+
+		"last five days\n"+
+		"SDRs per Currency unit (2)\n"+
+		"\n"+
+		"Currency\tAugust 28, 2024\tAugust 27, 2024\tAugust 26, 2024\tAugust 23, 2024\tAugust 22, 2024\n"))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestInternationalMonetaryFundDataSource_MissingHeader(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte("Currency\tAugust 28, 2024\tAugust 27, 2024\tAugust 26, 2024\tAugust 23, 2024\tAugust 22, 2024\n"+
+		"Chinese yuan\t0.1040520000\t0.1039250000\t0.1040370000\t0.1040850000\t0.1040570000\n"+
+		"U.S. dollar\t0.7417320000\t0.7410250000\t0.7408270000\t0.7429280000\t0.7423020000\n"))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestInternationalMonetaryFundDataSource_MissingDefaultCurrencyData(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte("SDRs per Currency unit and Currency units per SDR (1)\n"+
+		"last five days\n"+
+		"SDRs per Currency unit (2)\n"+
+		"\n"+
+		"Currency\tAugust 28, 2024\tAugust 27, 2024\tAugust 26, 2024\tAugust 23, 2024\tAugust 22, 2024\n"+
+		"Chinese yuan\t0.1040520000\t0.1039250000\t0.1040370000\t0.1040850000\t0.1040570000\n"))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestInternationalMonetaryFundDataSource_InvalidCurrency(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte("SDRs per Currency unit and Currency units per SDR (1)\n"+
+		"last five days\n"+
+		"SDRs per Currency unit (2)\n"+
+		"\n"+
+		"Currency\tAugust 28, 2024\tAugust 27, 2024\tAugust 26, 2024\tAugust 23, 2024\tAugust 22, 2024\n"+
+		"Foo bar\t0.1040520000\t0.1039250000\t0.1040370000\t0.1040850000\t0.1040570000\n"+
+		"U.S. dollar\t0.7417320000\t0.7410250000\t0.7408270000\t0.7429280000\t0.7423020000\n"))
+	assert.Equal(t, nil, err)
+	assert.Len(t, actualLatestExchangeRateResponse.ExchangeRates, 1)
+}
+
+func TestInternationalMonetaryFundDataSource_LatestDateNotHasRate(t *testing.T) {
+	dataSource := &InternationalMonetaryFundDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte("SDRs per Currency unit and Currency units per SDR (1)\n"+
+		"last five days\n"+
+		"SDRs per Currency unit (2)\n"+
+		"\n"+
+		"Currency\tAugust 28, 2024\tAugust 27, 2024\tAugust 26, 2024\tAugust 23, 2024\tAugust 22, 2024\n"+
+		"U.S. dollar\t0.7417320000\t0.7410250000\t0.7408270000\t0.7429280000\t0.7423020000\n"+
+		"U.A.E. dirham\t\t0.2017770000\t0.2017230000\t\t0.2021240000\n"))
+
+	assert.Equal(t, nil, err)
+	assert.Contains(t, actualLatestExchangeRateResponse.ExchangeRates, &models.LatestExchangeRate{
+		Currency: "AED",
+		Rate:     "3.675998751096507",
+	})
+}