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file_utils_test.go
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file_utils_test.go
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package gfu_test
import (
"github.com/stretchr/testify/assert"
"github.com/wissance/gfu"
"github.com/wissance/gwuu/testingutils"
"os"
"path"
"testing"
)
func TestReadAllLine(t *testing.T) {
testCases := []struct {
name string
fileName string
omitEmpty bool
expectedLines []string
}{
{
name: "cr_ending_with_empty_lines_and_omit_empty_lines",
fileName: path.Join(".", "testfiles", "cr_ending_with_empty_lines.txt"),
omitEmpty: true,
expectedLines: []string{
"Line one",
"Line two",
"Line three",
"Line four",
"{",
" \"id\": 1,",
" \"name\": \"Michael Ushakov\"",
"}",
},
},
{
name: "lf_ending_with_empty_lines_and_omit_empty_lines",
fileName: path.Join(".", "testfiles", "lf_ending_with_empty_lines.txt"),
omitEmpty: true,
expectedLines: []string{
"Line one",
"Line two",
"Line three",
"Line four",
"{",
" \"id\": 1,",
" \"name\": \"Michael Ushakov\"",
"}",
},
},
{
name: "crlf_ending_with_empty_lines_and_omit_empty_lines",
fileName: path.Join(".", "testfiles", "crlf_ending_with_empty_lines.txt"),
omitEmpty: true,
expectedLines: []string{
"Line one",
"Line two",
"Line three",
"Line four",
"{",
" \"id\": 1,",
" \"name\": \"Michael Ushakov\"",
"}",
},
},
{
name: "crlf_ending_with_empty_lines_and_not_omit_empty_lines",
fileName: path.Join(".", "testfiles", "crlf_ending_with_empty_lines.txt"),
omitEmpty: false,
expectedLines: []string{
"Line one",
"\t",
"Line two",
"Line three",
"\t",
"Line four",
"\t",
"{",
" \"id\": 1,",
"",
" \"name\": \"Michael Ushakov\"",
"}",
"",
"",
},
},
}
for _, tCase := range testCases {
t.Run(tCase.name, func(t *testing.T) {
t.Parallel()
actualLines, err := gfu.ReadAllLines(tCase.fileName, tCase.omitEmpty)
assert.NoError(t, err)
testingutils.CheckStrings(t, tCase.expectedLines, actualLines, true, true)
})
}
}
func TestWriteAllLines(t *testing.T) {
lines := []string{
"Line one",
"Line two",
"Line three",
"Line four",
"{",
" \"id\": 1,",
" \"name\": \"Michael Ushakov\"",
"}",
}
testFile := "write_all_lines_test.txt"
err := gfu.WriteAllLines(testFile, lines, "\n")
assert.NoError(t, err)
readLines, err := gfu.ReadAllLines(testFile, true)
assert.NoError(t, err)
testingutils.CheckStrings(t, lines, readLines, true, true)
_ = os.Remove(testFile)
}
func TestAppendAllLines(t *testing.T) {
lines := []string{
"Line one",
"Line two",
"Line three",
"Line four",
"{",
" \"id\": 1,",
" \"name\": \"Michael Ushakov\"",
"}",
}
testFile := "append_all_lines_test.txt"
err := gfu.WriteAllLines(testFile, lines, "\n")
assert.NoError(t, err)
appendingLines := []string{
"Line five",
"Line six",
"<html><head><title>This is the simplest demo page</title></head><body><h1>Main page header</h1></body></html>",
"Line seven",
}
err = gfu.AppendAllLines(testFile, appendingLines, "\n")
assert.NoError(t, err)
expectedLines := make([]string, 0)
expectedLines = append(expectedLines, lines...)
expectedLines = append(expectedLines, appendingLines...)
actualLines, err := gfu.ReadAllLines(testFile, true)
assert.NoError(t, err)
testingutils.CheckStrings(t, expectedLines, actualLines, true, true)
_ = os.Remove(testFile)
}