diff options
Diffstat (limited to 'usage_test.go')
| -rw-r--r-- | usage_test.go | 212 |
1 files changed, 203 insertions, 9 deletions
diff --git a/usage_test.go b/usage_test.go index 71324eb..a958abb 100644 --- a/usage_test.go +++ b/usage_test.go @@ -260,28 +260,199 @@ Options: assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) } -type userDefinedVersionFlag struct { - ShowVersion bool `arg:"--version" help:"this is a user-defined version flag"` +func TestUsageWithUserDefinedVersionFlag(t *testing.T) { + expectedUsage := "Usage: example [--version]" + + expectedHelp := ` +Usage: example [--version] + +Options: + --version this is a user-defined version flag + --help, -h display this help and exit +` + + var args struct { + ShowVersion bool `arg:"--version" help:"this is a user-defined version flag"` + } + + os.Args[0] = "example" + p, err := NewParser(Config{}, &args) + require.NoError(t, err) + + var help bytes.Buffer + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + var usage bytes.Buffer + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) } -// Version returns the version for this program -func (userDefinedVersionFlag) Version() string { - return "example 3.2.1" +func TestUsageWithVersionAndUserDefinedVersionFlag(t *testing.T) { + expectedUsage := "Usage: example [--version]" + + expectedHelp := ` +Usage: example [--version] + +Options: + --version this is a user-defined version flag + --help, -h display this help and exit +` + + var args struct { + versioned + ShowVersion bool `arg:"--version" help:"this is a user-defined version flag"` + } + + os.Args[0] = "example" + p, err := NewParser(Config{}, &args) + require.NoError(t, err) + + var help bytes.Buffer + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + var usage bytes.Buffer + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) } -func TestUsageWithUserDefinedVersionFlag(t *testing.T) { - expectedUsage := "example 3.2.1\nUsage: example [--version]" +type subcommand struct { + Number int `arg:"-n,--number" help:"compute something on the given number"` +} + +func TestUsageWithVersionAndSubcommand(t *testing.T) { + expectedUsage := "example 3.2.1\nUsage: example <command> [<args>]" expectedHelp := ` example 3.2.1 -Usage: example [--version] +Usage: example <command> [<args>] + +Options: + --help, -h display this help and exit + --version display version and exit + +Commands: + cmd +` + + var args struct { + versioned + Cmd *subcommand `arg:"subcommand"` + } + + os.Args[0] = "example" + p, err := NewParser(Config{}, &args) + require.NoError(t, err) + + var help bytes.Buffer + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + var usage bytes.Buffer + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) + + expectedUsage = "example 3.2.1\nUsage: example cmd [--number NUMBER]" + + expectedHelp = ` +example 3.2.1 +Usage: example cmd [--number NUMBER] + +Options: + --number NUMBER, -n NUMBER + compute something on the given number + --help, -h display this help and exit + --version display version and exit +` + _ = p.Parse([]string{"cmd"}) + + help = bytes.Buffer{} + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + usage = bytes.Buffer{} + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) +} + +func TestUsageWithUserDefinedVersionFlagAndSubcommand(t *testing.T) { + expectedUsage := "Usage: example [--version] <command> [<args>]" + + expectedHelp := ` +Usage: example [--version] <command> [<args>] + +Options: + --version this is a user-defined version flag + --help, -h display this help and exit + +Commands: + cmd +` + + var args struct { + Cmd *subcommand `arg:"subcommand"` + ShowVersion bool `arg:"--version" help:"this is a user-defined version flag"` + } + + os.Args[0] = "example" + p, err := NewParser(Config{}, &args) + require.NoError(t, err) + + var help bytes.Buffer + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + var usage bytes.Buffer + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) + + expectedUsage = "Usage: example cmd [--number NUMBER]" + + expectedHelp = ` +Usage: example cmd [--number NUMBER] + +Options: + --number NUMBER, -n NUMBER + compute something on the given number + +Global options: + --version this is a user-defined version flag + --help, -h display this help and exit +` + _ = p.Parse([]string{"cmd"}) + + help = bytes.Buffer{} + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + usage = bytes.Buffer{} + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) +} + +func TestUsageWithVersionAndUserDefinedVersionFlagAndSubcommand(t *testing.T) { + expectedUsage := "Usage: example [--version] <command> [<args>]" + + expectedHelp := ` +Usage: example [--version] <command> [<args>] Options: --version this is a user-defined version flag --help, -h display this help and exit + +Commands: + cmd ` + + var args struct { + versioned + Cmd *subcommand `arg:"subcommand"` + ShowVersion bool `arg:"--version" help:"this is a user-defined version flag"` + } + os.Args[0] = "example" - p, err := NewParser(Config{}, &userDefinedVersionFlag{}) + p, err := NewParser(Config{}, &args) require.NoError(t, err) var help bytes.Buffer @@ -291,6 +462,29 @@ Options: var usage bytes.Buffer p.WriteUsage(&usage) assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) + + expectedUsage = "Usage: example cmd [--number NUMBER]" + + expectedHelp = ` +Usage: example cmd [--number NUMBER] + +Options: + --number NUMBER, -n NUMBER + compute something on the given number + +Global options: + --version this is a user-defined version flag + --help, -h display this help and exit +` + _ = p.Parse([]string{"cmd"}) + + help = bytes.Buffer{} + p.WriteHelp(&help) + assert.Equal(t, expectedHelp[1:], help.String()) + + usage = bytes.Buffer{} + p.WriteUsage(&usage) + assert.Equal(t, expectedUsage, strings.TrimSpace(usage.String())) } type described struct{} |