dolt/samples/go/csv/schema_test.go

// Copyright 2016 The Noms Authors. All rights reserved.
// Licensed under the Apache License, version 2.0:
// http://www.apache.org/licenses/LICENSE-2.0

package csv

import (
	"bytes"
	"fmt"
	"strings"
	"testing"

	"github.com/attic-labs/noms/go/types"
	"github.com/attic-labs/testify/assert"
)

func TestSchemaDetection(t *testing.T) {
	assert := assert.New(t)
	test := func(input [][]string, expect []KindSlice) {
		options := newSchemaOptions(len(input[0]))
		for _, values := range input {
			options.Test(values)
		}

		assert.Equal(expect, options.ValidKinds())
	}
	test(
		[][]string{
			[]string{"foo", "1", "5"},
			[]string{"bar", "0", "10"},
			[]string{"true", "1", "23"},
			[]string{"1", "1", "60"},
			[]string{"1.1", "false", "75"},
		},
		[]KindSlice{
			KindSlice{types.StringKind},
			KindSlice{types.BoolKind, types.StringKind},
			KindSlice{
				types.NumberKind,
				types.StringKind,
			},
		},
	)
	test(
		[][]string{
			[]string{"foo"},
			[]string{"bar"},
			[]string{"true"},
			[]string{"1"},
			[]string{"1.1"},
		},
		[]KindSlice{
			KindSlice{types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"true"},
			[]string{"1"},
			[]string{"1.1"},
		},
		[]KindSlice{
			KindSlice{types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"true"},
			[]string{"false"},
			[]string{"True"},
			[]string{"False"},
			[]string{"TRUE"},
			[]string{"FALSE"},
			[]string{"1"},
			[]string{"0"},
		},
		[]KindSlice{
			KindSlice{types.BoolKind, types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"1.1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"1.1"},
			[]string{"4.940656458412465441765687928682213723651e-50"},
			[]string{"-4.940656458412465441765687928682213723651e-50"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)

	test(
		[][]string{
			[]string{"1"},
			[]string{"1.1"},
			[]string{"1.797693134862315708145274237317043567981e+102"},
			[]string{"-1.797693134862315708145274237317043567981e+102"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"1.1"},
			[]string{"1.797693134862315708145274237317043567981e+309"},
			[]string{"-1.797693134862315708145274237317043567981e+309"},
		},
		[]KindSlice{
			KindSlice{
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"0"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.BoolKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"0"},
			[]string{"-0"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"280"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"-180"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"33000"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"-44000"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"2547483648"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
	test(
		[][]string{
			[]string{"1"},
			[]string{"-4347483648"},
			[]string{"0"},
			[]string{"-1"},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)

	test(
		[][]string{
			[]string{fmt.Sprintf("%d", uint64(1<<63))},
			[]string{fmt.Sprintf("%d", uint64(1<<63)+1)},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)

	test(
		[][]string{
			[]string{fmt.Sprintf("%d", uint64(1<<32))},
			[]string{fmt.Sprintf("%d", uint64(1<<32)+1)},
		},
		[]KindSlice{
			KindSlice{
				types.NumberKind,
				types.StringKind},
		},
	)
}

func TestReportValidFieldTypes(t *testing.T) {
	assert := assert.New(t)
	data := [][]string{
		{"h1", "h2", "h3"},
		{"1.1", "true", "d3"},
		{"2", "false", "d6"},
	}
	expectedKinds := []KindSlice{
		KindSlice{types.NumberKind, types.StringKind},
		KindSlice{types.BoolKind, types.StringKind},
		KindSlice{types.StringKind},
	}
	dataString := ""
	for _, row := range data {
		dataString = dataString + strings.Join(row, ",") + "\n"
	}

	r := NewCSVReader(bytes.NewBufferString(dataString), ',')
	headers, err := r.Read()
	assert.NoError(err)
	assert.Equal(data[0], headers)
	kinds := ReportValidFieldTypes(r, headers)
	for i, ks := range kinds {
		assert.Equal(expectedKinds[i], ks)
	}
}