csv/reader_test.go at master · weisbartb/csv · GitHub

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package csv

import (
	"embed"
	"testing"

	testifyrequire "github.com/stretchr/testify/require"
)

//go:embed testdata
var testData embed.FS

type simpleCSVRecord struct {
	AString string  `csv:"a_string"`
	AFloat  float64 `csv:"a_float"`
	AnInt   int     `csv:"an_int"`
	ABool   bool    `csv:"a_bool"`
}
type simpleCSVRecordStrictFail struct {
	AString string  `csv:"a_string"`
	AFloat  float64 `csv:"a_float"`
	AnInt   int     `csv:"an_int"`
}
type requiredCSVRecordStrictFail struct {
	AString string  `csv:"a_string,required"`
	AFloat  float64 `csv:"a_float,required"`
	AnInt   int     `csv:"an_int,required"`
	ABool   bool    `csv:"a_bool"`
}

func TestNewStructuredCSVReader(t *testing.T) {
	require := testifyrequire.New(t)

	fh, err := testData.Open("testdata/simple.csv")
	require.NoError(err)
	reader := NewStructuredCSVReader[simpleCSVRecord](fh)
	require.NotNil(reader)
}

func TestReader_Next(t *testing.T) {
	t.Run("base test", func(t *testing.T) {
		require := testifyrequire.New(t)
		fh, err := testData.Open("testdata/simple.csv")
		require.NoError(err)
		reader := NewStructuredCSVReader[simpleCSVRecord](fh)
		record, err := reader.Next()
		require.NoError(err)
		require.NotEmpty(record)
		require.Equal(true, record.ABool)
		require.Equal(11, record.AnInt)
		require.Equal(523.52, record.AFloat)
		require.Equal("string", record.AString)
	})
	t.Run("strict mode", func(t *testing.T) {
		require := testifyrequire.New(t)
		fh, err := testData.Open("testdata/simple.csv")
		reader := NewStructuredCSVReader[simpleCSVRecordStrictFail](fh)
		reader.StrictMode = true
		require.NoError(err)
		_, err = reader.Next()
		require.EqualError(err, "a_bool was seen in the csv but not in the record provided")
	})
	t.Run("required mode - ok", func(t *testing.T) {
		require := testifyrequire.New(t)
		fh, err := testData.Open("testdata/simple-required.csv")
		require.NoError(err)
		reader := NewStructuredCSVReader[requiredCSVRecordStrictFail](fh)
		record, err := reader.Next()
		require.NoError(err)
		require.Equal(false, record.ABool)
		require.Equal(11, record.AnInt)
		require.Equal(523.52, record.AFloat)
		require.Equal("string", record.AString)
	})
	t.Run("required mode - wrong", func(t *testing.T) {
		require := testifyrequire.New(t)
		fh, err := testData.Open("testdata/simple-required.csv")
		require.NoError(err)
		reader := NewStructuredCSVReader[requiredCSVRecordStrictFail](fh)

		_, _ = reader.Next()
		_, err = reader.Next()
		require.EqualError(err, "an_int is a required field")
	})

}