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utils_test.go
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utils_test.go
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package argparse
import (
"os"
"strings"
"testing" //import go package for testing related functionality
)
// TestExtractOptions_NoArgs tests to ensure that when no arguments are provided,
// no options or arguments are returned by extractOptions.
func TestExtractOptions_NoArgs(t *testing.T) {
var noArgs []string
options, args := extractOptions(noArgs...)
if len(options) != 0 {
t.Error("No options should have been extracted")
}
if len(args) != 0 {
t.Error("No arguments should have been extracted")
}
}
// TestExtractOptions_OnlyOptions tests to ensure that if only option arguments are
// provided, that the same number of option arguments are returned & with no
// additional arguments by extractOptions.
func TestExtractOptions_OnlyOptions(t *testing.T) {
onlyOptionArgs := []string{"-f", "--foobar"}
options, args := extractOptions(onlyOptionArgs...)
if len(options) != len(onlyOptionArgs) {
t.Errorf(
"%d number of options expected, but only %d were extracted",
len(onlyOptionArgs),
len(options),
)
}
if len(args) != 0 {
t.Error("No arguments should have been extracted")
}
}
// TestExtractOptions_MutliShortOptions tests to ensure that multiple short-options
// residing beside each other are properly recognized and extract individually,
// and no other arguments are returned.
func TestExtractOptions_MultiShortOptions(t *testing.T) {
shortOptions := []string{"a", "b", "c"}
shortOptionArgs := []string{"-" + strings.Join(shortOptions, "")}
options, args := extractOptions(shortOptionArgs...)
if len(options) != len(shortOptions) {
t.Errorf(
"%d number of options expected, but only %d were extracted",
len(shortOptions),
len(options),
)
}
if len(args) != 0 {
t.Error("No arguments should have been extracted")
}
}
// TestExtractOptions_OnlyArgs tests to ensure that if only passive arguments are
// provided, that the same number of passive arguments are returned & with no
// options extracted by extractOptions.
func TestExtractOptions_OnlyArgs(t *testing.T) {
onlyArgs := []string{"arg1", "arg2", "arg3", "arg4"}
options, args := extractOptions(onlyArgs...)
if len(args) != len(onlyArgs) {
t.Errorf(
"%d number of passive argumentss expected, but only %d were extracted",
len(onlyArgs),
len(args),
)
}
if len(options) != 0 {
t.Error("No options should have been extracted")
}
}
// TestExtractOptions tests to ensure that the expected number of options & passive
// arguments are extracted by extractOptions.
func TestExtractOptions(t *testing.T) {
allArgs := []string{"-f", "foobar", "--fizzbuzz", "four", "five", "-irtusc"}
numOptions := 8
numArgs := 3
options, args := extractOptions(allArgs...)
if len(options) != numOptions {
t.Errorf(
"%d number of options expected, but only %d were extracted",
numOptions,
len(options),
)
}
if len(args) != numArgs {
t.Errorf(
"%d number of passive argumentss expected, but only %d were extracted",
numArgs,
len(args),
)
}
}
// TestGetEnvVar tests to ensure that we can grab the value of a specified
// environmental variable if it exists, or otherwise error out.
func TestGetEnvVar(t *testing.T) {
key := "FAKE_EXIST_ENV_VAR_1337"
val := "value chosen at random"
if err := os.Setenv(key, val); err != nil {
t.Fatal(err)
}
if str, err := getEnvVar("$" + key); err != nil {
t.Errorf(
"no error was expected, but an error was returned: %s",
err.Error(),
)
} else {
if str != val {
t.Errorf(
"\"%s\" expected value does not match returned value \"%s\"",
val,
str,
)
}
}
key = "FAKE_DOES_NOT_EXIST"
if _, err := getEnvVar("$" + key); err == nil {
t.Error("An error was expected, but no errors were returned")
}
}
// TestGetScreenWidth tests to ensure that a positive, non-zero integer value is returned
// to represent the width of the current screen.
func TestGetScreenWidth(t *testing.T) {
// I am not really sure the best way to test this.
// TODO: make a better test!
width := getScreenWidth()
if width <= 0 {
t.Error("Retrieved screen width should be a positive, non-zero integer")
}
}
// TestIsEnvVarFormat is a table-test to ensure that isEnvVarFormat will
// return the expected result for a given slice of inputs representing
// possible environmental names.
func TestIsEnvVarFormat(t *testing.T) {
table := map[string]bool{
"": false,
"$": false,
"$0": false,
"0": false,
"_": false,
"abc": false,
"DEF": false,
"VAR$": false,
"$TEST": true,
"$abc": true,
"$FOO_BAR": true,
"$_": true,
"$LEET_1337": true,
"$z28": true,
"$one_222_THREE": true,
"$MANY_______und3rscor3s__": true,
}
for testStr, expectedBool := range table {
result := isEnvVarFormat(testStr)
if result != expectedBool {
t.Errorf(
"envVarFormat expected the string \"%s\" to return: %t, but got %t instead",
testStr,
expectedBool,
result,
)
}
}
}
// TestJoin tests to ensure that a variety of string slices can be joined in the
// correct, expected manner.
func TestJoin(t *testing.T) {
testStrings := [][]string{
{"one", "two"},
{""},
{"three", "four", "five"},
}
expectedStrings := []string{
"one two",
"",
"three four five",
}
for i, test := range testStrings {
actual := join(" ", test...)
expected := expectedStrings[i]
if actual != expected {
t.Errorf(
"Expected: '%s' but received: '%s'",
expected,
actual,
)
}
}
actual := join("-*-", "abc", "def")
expected := "abc-*-def"
if actual != expected {
t.Errorf(
"Expected: '%s' but received: '%s'",
expected,
actual,
)
}
}
// TestSpacer tests to make sure the proper length strings are returned, as expected.
func TestSpacer(t *testing.T) {
intTests := []int{-1000, -100, -10, -1, 0, 1, 10, 100, 1000}
for _, test := range intTests {
actual := spacer(test)
expectedLen := test
if expectedLen < 0 {
expectedLen = 0
}
if len(actual) != expectedLen {
if len(actual) != 0 {
t.Errorf("Expected string of length: %d but received: '%s'", expectedLen, actual)
}
}
}
}
// TestWordWrap tests to ensure strings will be broken into the appropriate
// word-length limited slice of strings.
func TestWordWrap(t *testing.T) {
oneLine := "This text is below the limit."
threeLines := "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Vestibulum dolor justo, tempor quis"
if len(wordWrap(oneLine, 35)) != 1 {
t.Error("wordWrap did not return a slice of lenth 1")
}
if len(wordWrap(threeLines, 35)) != 3 {
t.Error("wordWrap did not return a slice of length 3")
}
}