fix example function names

example_test.go

@@ -6,7 +6,7 @@ import (
 )
 
 // This example demonstrates basic usage
-func Example_Basic() {
+func Example() {
 	// These are the args you would pass in on the command line
 	os.Args = []string{"./example", "--foo=hello", "--bar"}
 
@@ -19,7 +19,7 @@ func Example_Basic() {
 }
 
 // This example demonstrates arguments that have default values
-func Example_DefaultValues() {
+func Example_defaultValues() {
 	// These are the args you would pass in on the command line
 	os.Args = []string{"--help"}
 
@@ -33,7 +33,7 @@ func Example_DefaultValues() {
 }
 
 // This example demonstrates arguments that are required
-func Example_RequiredArguments() {
+func Example_requiredArguments() {
 	// These are the args you would pass in on the command line
 	os.Args = []string{"--foo=1", "--bar"}
 
@@ -45,7 +45,7 @@ func Example_RequiredArguments() {
 }
 
 // This example demonstrates positional arguments
-func Example_PositionalArguments() {
+func Example_positionalArguments() {
 	// These are the args you would pass in on the command line
 	os.Args = []string{"./example", "in", "out1", "out2", "out3"}
 
@@ -59,7 +59,7 @@ func Example_PositionalArguments() {
 }
 
 // This example demonstrates arguments that have multiple values
-func Example_MultipleValues() {
+func Example_multipleValues() {
 	// The args you would pass in on the command line
 	os.Args = []string{"--help"}
 
@@ -72,7 +72,7 @@ func Example_MultipleValues() {
 }
 
 // This example shows the usage string generated by go-arg
-func Example_UsageString() {
+func Example_usageString() {
 	// These are the args you would pass in on the command line
 	os.Args = []string{"--help"}
 

parse.go

@@ -95,8 +95,8 @@ func NewParser(config Config, dests ...interface{}) (*Parser, error) {
 
 			// Check whether this field is supported. It's good to do this here rather than
 			// wait until setScalar because it means that a program with invalid argument
-			// fields will always fail regardless of whether the arguments it recieved happend
-			// to exercise those fields.
+			// fields will always fail regardless of whether the arguments it received
+			// exercised those fields.
 			var parseable bool
 			parseable, spec.boolean, spec.multiple = canParse(field.Type)
 			if !parseable {
@@ -309,7 +309,7 @@ func validate(spec []*spec) error {
 	return nil
 }
 
-// parse a value as the apropriate type and store it in the struct
+// parse a value as the appropriate type and store it in the struct
 func setSlice(dest reflect.Value, values []string) error {
 	if !dest.CanSet() {
 		return fmt.Errorf("field is not writable")

parse_test.go

@@ -12,6 +12,12 @@ import (
 	"github.com/stretchr/testify/require"
 )
 
+func setenv(t *testing.T, name, val string) {
+	if err := os.Setenv(name, val); err != nil {
+		t.Error(err)
+	}
+}
+
 func parse(cmdline string, dest interface{}) error {
 	p, err := NewParser(Config{}, dest)
 	if err != nil {
@@ -453,7 +459,7 @@ func TestEnvironmentVariable(t *testing.T) {
 	var args struct {
 		Foo string `arg:"env"`
 	}
-	os.Setenv("FOO", "bar")
+	setenv(t, "FOO", "bar")
 	os.Args = []string{"example"}
 	MustParse(&args)
 	assert.Equal(t, "bar", args.Foo)
@@ -463,7 +469,7 @@ func TestEnvironmentVariableOverrideName(t *testing.T) {
 	var args struct {
 		Foo string `arg:"env:BAZ"`
 	}
-	os.Setenv("BAZ", "bar")
+	setenv(t, "BAZ", "bar")
 	os.Args = []string{"example"}
 	MustParse(&args)
 	assert.Equal(t, "bar", args.Foo)
@@ -473,7 +479,7 @@ func TestEnvironmentVariableOverrideArgument(t *testing.T) {
 	var args struct {
 		Foo string `arg:"env"`
 	}
-	os.Setenv("FOO", "bar")
+	setenv(t, "FOO", "bar")
 	os.Args = []string{"example", "--foo", "baz"}
 	MustParse(&args)
 	assert.Equal(t, "baz", args.Foo)
@@ -483,7 +489,7 @@ func TestEnvironmentVariableError(t *testing.T) {
 	var args struct {
 		Foo int `arg:"env"`
 	}
-	os.Setenv("FOO", "bar")
+	setenv(t, "FOO", "bar")
 	os.Args = []string{"example"}
 	err := Parse(&args)
 	assert.Error(t, err)
@@ -493,7 +499,7 @@ func TestEnvironmentVariableRequired(t *testing.T) {
 	var args struct {
 		Foo string `arg:"env,required"`
 	}
-	os.Setenv("FOO", "bar")
+	setenv(t, "FOO", "bar")
 	os.Args = []string{"example"}
 	MustParse(&args)
 	assert.Equal(t, "bar", args.Foo)