add Central Bank of Myanmar exchange rates data source

pkg/exchangerates/central_bank_of_myanmar_datasource_test.go

@@ -0,0 +1,121 @@
+package exchangerates
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/mayswind/ezbookkeeping/pkg/core"
+	"github.com/mayswind/ezbookkeeping/pkg/models"
+)
+
+const centralBankOfMyanmarMinimumRequiredContent = "{\n" +
+	"  \"timestamp\": \"1731571200\",\n" +
+	"  \"rates\": {\n" +
+	"    \"USD\": \"2,100.0\",\n" +
+	"    \"JPY\": \"1,347.6\"\n" +
+	"  }\n" +
+	"}"
+
+func TestCentralBankOfMyanmarDataSource_StandardDataExtractBaseCurrency(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte(centralBankOfMyanmarMinimumRequiredContent))
+	assert.Equal(t, nil, err)
+	assert.Equal(t, "MMK", actualLatestExchangeRateResponse.BaseCurrency)
+}
+
+func TestCentralBankOfMyanmarDataSource_StandardDataExtractUpdateTime(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte(centralBankOfMyanmarMinimumRequiredContent))
+	assert.Equal(t, nil, err)
+	assert.Equal(t, int64(1731571200), actualLatestExchangeRateResponse.UpdateTime)
+}
+
+func TestCentralBankOfMyanmarDataSource_StandardDataExtractExchangeRates(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte(centralBankOfMyanmarMinimumRequiredContent))
+	assert.Equal(t, nil, err)
+	assert.Contains(t, actualLatestExchangeRateResponse.ExchangeRates, &models.LatestExchangeRate{
+		Currency: "JPY",
+		Rate:     "0.07420599584446423",
+	})
+	assert.Contains(t, actualLatestExchangeRateResponse.ExchangeRates, &models.LatestExchangeRate{
+		Currency: "USD",
+		Rate:     "0.0004761904761904762",
+	})
+}
+
+func TestCentralBankOfMyanmarDataSource_BlankContent(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte(""))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestCentralBankOfMyanmarDataSource_EmptyData(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte("{}"))
+	assert.NotEqual(t, nil, err)
+}
+
+func TestCentralBankOfMyanmarDataSource_EmptyExchangeRatesData(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	_, err := dataSource.Parse(context, []byte("{\n"+
+		"  \"timestamp\": \"1731571200\"\n"+
+		"}"))
+
+	_, err = dataSource.Parse(context, []byte("{\n"+
+		"  \"timestamp\": \"1731571200\",\n"+
+		"  \"rates\": {\n"+
+		"  }\n"+
+		"}"))
+	assert.Nil(t, nil, err)
+}
+
+func TestCentralBankOfMyanmarDataSource_InvalidCurrency(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte("{\n"+
+		"  \"timestamp\": \"1731571200\",\n"+
+		"  \"rates\": {\n"+
+		"    \"XXX\": \"1\"\n"+
+		"  }\n"+
+		"}"))
+	assert.Equal(t, nil, err)
+	assert.Len(t, actualLatestExchangeRateResponse.ExchangeRates, 0)
+}
+
+func TestCentralBankOfMyanmarDataSource_InvalidRate(t *testing.T) {
+	dataSource := &CentralBankOfMyanmarDataSource{}
+	context := core.NewNullContext()
+
+	actualLatestExchangeRateResponse, err := dataSource.Parse(context, []byte("{\n"+
+		"  \"timestamp\": \"1731571200\",\n"+
+		"  \"rates\": {\n"+
+		"    \"USD\": null\n"+
+		"  }\n"+
+		"}"))
+	assert.Equal(t, nil, err)
+	assert.Len(t, actualLatestExchangeRateResponse.ExchangeRates, 0)
+
+	actualLatestExchangeRateResponse, err = dataSource.Parse(context, []byte("{\n"+
+		"  \"timestamp\": \"1731571200\",\n"+
+		"  \"rates\": {\n"+
+		"    \"USD\": \"0\"\n"+
+		"  }\n"+
+		"}"))
+	assert.Equal(t, nil, err)
+	assert.Len(t, actualLatestExchangeRateResponse.ExchangeRates, 0)
+}