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package types_test
import (
"flag"
"strings"
. "github.com/onsi/ginkgo/v2"
"github.com/onsi/ginkgo/v2/formatter"
"github.com/onsi/ginkgo/v2/types"
. "github.com/onsi/gomega"
"github.com/onsi/gomega/format"
"github.com/onsi/gomega/gbytes"
)
var _ = Describe("Flags", func() {
BeforeEach(func() {
format.CharactersAroundMismatchToInclude = 1000
formatter.SingletonFormatter.ColorMode = formatter.ColorModePassthrough
})
Describe("GinkgoFlags", func() {
Describe("CopyAppend", func() {
It("concatenates the flags together, making a copy as it does so", func() {
A := types.GinkgoFlags{{Name: "A"}, {Name: "B"}, {Name: "C"}}
B := types.GinkgoFlags{{Name: "1"}, {Name: "2"}, {Name: "3"}}
Ω(A.CopyAppend(B...)).Should(Equal(types.GinkgoFlags{{Name: "A"}, {Name: "B"}, {Name: "C"}, {Name: "1"}, {Name: "2"}, {Name: "3"}}))
Ω(A).Should(HaveLen(3))
Ω(B).Should(HaveLen(3))
})
})
Describe("WithPrefix", func() {
It("attaches the passed in prefi to the Name, DeprecatedName and ExportAs fields", func() {
flags := types.GinkgoFlags{
{Name: "A"},
{DeprecatedName: "B"},
{ExportAs: "C"},
}
prefixed := flags.WithPrefix("hello")
Ω(prefixed).Should(Equal(types.GinkgoFlags{
{Name: "hello.A"},
{DeprecatedName: "hello.B"},
{ExportAs: "hello.C"},
}))
})
})
Describe("SubsetWithNames", func() {
It("returns the subset of flags with matching names", func() {
A := types.GinkgoFlags{{Name: "A", Usage: "Hey A"}, {Name: "B", Usage: "Hey B"}, {Name: "C", Usage: "Hey C"}}
subset := A.SubsetWithNames("A", "C", "D")
Ω(subset).Should(Equal(types.GinkgoFlags{{Name: "A", Usage: "Hey A"}, {Name: "C", Usage: "Hey C"}}))
})
})
})
Describe("GinkgoFlagSections", func() {
Describe("Lookup", func() {
var sections types.GinkgoFlagSections
BeforeEach(func() {
sections = types.GinkgoFlagSections{
{Key: "A", Heading: "Aft"},
{Key: "B", Heading: "Starboard"},
}
})
It("looks up the flag section with the passed in key", func() {
section, found := sections.Lookup("A")
Ω(found).Should(BeTrue())
Ω(section).Should(Equal(sections[0]))
})
It("returns an empty flag section when the key is not found", func() {
section, found := sections.Lookup("C")
Ω(found).Should(BeFalse())
Ω(section).Should(BeZero())
})
})
})
Describe("The zero GinkgoFlagSet", func() {
It("returns true for IsZero", func() {
Ω(types.GinkgoFlagSet{}.IsZero()).Should(BeTrue())
})
It("returns the passed in args when asked to parse", func() {
args := []string{"-a=1", "-b=2", "-c=3"}
Ω(types.GinkgoFlagSet{}.Parse(args)).Should(Equal(args))
})
It("does not validate any deprecations", func() {
deprecationTracker := types.NewDeprecationTracker()
types.GinkgoFlagSet{}.ValidateDeprecations(deprecationTracker)
Ω(deprecationTracker.DidTrackDeprecations()).Should(BeFalse())
})
It("emits an empty string for usage", func() {
Ω(types.GinkgoFlagSet{}.Usage()).Should(Equal(""))
})
})
Describe("GinkgoFlagSet", func() {
type StructA struct {
StringProperty string
Int64Property int64
Float64Property float64
}
type StructB struct {
IntProperty int
BoolProperty bool
StringSliceProperty []string
DeprecatedProperty string
}
var A StructA
var B StructB
var flags types.GinkgoFlags
var bindings map[string]any
var sections types.GinkgoFlagSections
var flagSet types.GinkgoFlagSet
BeforeEach(func() {
A = StructA{
StringProperty: "the default string",
Int64Property: 1138,
Float64Property: 3.141,
}
B = StructB{
IntProperty: 2009,
BoolProperty: true,
StringSliceProperty: []string{"once", "upon", "a time"},
DeprecatedProperty: "n/a",
}
bindings = map[string]any{
"A": &A,
"B": &B,
}
sections = types.GinkgoFlagSections{
{Key: "candy", Style: "{{red}}", Heading: "Candy Section", Description: "So sweet."},
{Key: "dairy", Style: "{{blue}}", Heading: "Dairy Section", Description: "Abbreviated section", Succinct: true},
}
flags = types.GinkgoFlags{
{Name: "string-flag", SectionKey: "candy", Usage: "string-usage", UsageArgument: "name", UsageDefaultValue: "Gerald", KeyPath: "A.StringProperty", DeprecatedName: "stringFlag"},
{Name: "int-64-flag", SectionKey: "candy", Usage: "int-64-usage", KeyPath: "A.Int64Property", DeprecatedName: "int64Flag", DeprecatedDocLink: "no-more-camel-case"},
{Name: "float-64-flag", SectionKey: "dairy", Usage: "float-64-usage", KeyPath: "A.Float64Property"},
{Name: "int-flag", SectionKey: "invalid", Usage: "int-usage", KeyPath: "B.IntProperty"},
{Name: "bool-flag", SectionKey: "candy", Usage: "bool-usage", KeyPath: "B.BoolProperty"},
{Name: "string-slice-flag", SectionKey: "dairy", Usage: "string-slice-usage", KeyPath: "B.StringSliceProperty"},
{SectionKey: "candy", DeprecatedName: "deprecated-flag", KeyPath: "B.DeprecatedProperty", Usage: "deprecated-usage"},
}
})
Describe("Creation Failure Cases", func() {
Context("when passed an unsupported type in the map", func() {
BeforeEach(func() {
type UnsupportedStructB struct {
IntProperty int
BoolProperty bool
StringSliceProperty []string
DeprecatedProperty int32 //not supported
}
bindings = map[string]any{
"A": &A,
"B": &UnsupportedStructB{},
}
})
It("errors", func() {
flagSet, err := types.NewGinkgoFlagSet(flags, bindings, sections)
Ω(flagSet.IsZero()).Should(BeTrue())
Ω(err).Should(HaveOccurred())
})
})
Context("when the flags point to an invalid keypath in the map", func() {
BeforeEach(func() {
flags = append(flags, types.GinkgoFlag{Name: "welp-flag", Usage: "welp-usage", KeyPath: "A.WelpProperty"})
})
It("errors", func() {
flagSet, err := types.NewGinkgoFlagSet(flags, bindings, sections)
Ω(flagSet.IsZero()).Should(BeTrue())
Ω(err).Should(HaveOccurred())
})
})
})
Describe("A stand-alone GinkgoFlagSet", func() {
BeforeEach(func() {
var err error
flagSet, err = types.NewGinkgoFlagSet(flags, bindings, sections)
Ω(flagSet.IsZero()).Should(BeFalse())
Ω(err).ShouldNot(HaveOccurred())
})
Describe("Parsing flags", func() {
It("maintains default values when no flags are parsed", func() {
args, err := flagSet.Parse([]string{})
Ω(err).ShouldNot(HaveOccurred())
Ω(args).Should(Equal([]string{}))
Ω(A.StringProperty).Should(Equal("the default string"))
Ω(B.IntProperty).Should(Equal(2009))
})
It("updates the bindings when flags are parsed, returning any additional arguments", func() {
args, err := flagSet.Parse([]string{
"-string-flag", "a new string",
"-int-64-flag=1139",
"--float-64-flag", "2.71",
"-int-flag=1984",
"-bool-flag=false",
"-string-slice-flag", "there lived",
"-string-slice-flag", "three dragons",
"extra-1",
"extra-2",
})
Ω(err).ShouldNot(HaveOccurred())
Ω(args).Should(Equal([]string{"extra-1", "extra-2"}))
Ω(A.StringProperty).Should(Equal("a new string"))
Ω(A.Int64Property).Should(Equal(int64(1139)))
Ω(A.Float64Property).Should(Equal(2.71))
Ω(B.IntProperty).Should(Equal(1984))
Ω(B.BoolProperty).Should(Equal(false))
Ω(B.StringSliceProperty).Should(Equal([]string{"once", "upon", "a time", "there lived", "three dragons"}))
})
It("updates the bindings when deprecated flags are set", func() {
_, err := flagSet.Parse([]string{
"-stringFlag", "deprecated but works",
"-int64Flag=1234",
"-deprecated-flag", "does not fail",
})
Ω(err).ShouldNot(HaveOccurred())
Ω(A.StringProperty).Should(Equal("deprecated but works"))
Ω(A.Int64Property).Should(Equal(int64(1234)))
Ω(B.DeprecatedProperty).Should(Equal("does not fail"))
})
It("reports accurately on flags that were set", func() {
_, err := flagSet.Parse([]string{
"-string-flag", "a new string",
"--float-64-flag", "2.71",
})
Ω(err).ShouldNot(Hav
8000
eOccurred())
Ω(flagSet.WasSet("string-flag")).Should(BeTrue())
Ω(flagSet.WasSet("int-64-flag")).Should(BeFalse())
Ω(flagSet.WasSet("float-64-flag")).Should(BeTrue())
})
})
Describe("Validating Deprecations", func() {
var deprecationTracker *types.DeprecationTracker
BeforeEach(func() {
deprecationTracker = types.NewDeprecationTracker()
})
Context("when no deprecated flags were invoked", func() {
It("doesn't track any deprecations", func() {
flagSet.Parse([]string{
"--string-flag", "ok",
"--int-flag", "1983",
})
flagSet.ValidateDeprecations(deprecationTracker)
Ω(deprecationTracker.DidTrackDeprecations()).Should(BeFalse())
})
})
Context("when deprecated flags were invoked", func() {
It("tracks any detected deprecations with the passed in deprecation tracker", func() {
flagSet.Parse([]string{
"--stringFlag", "deprecated version",
"--string-flag", "ok",
"--int64Flag", "427",
})
flagSet.ValidateDeprecations(deprecationTracker)
Ω(deprecationTracker.DidTrackDeprecations()).Should(BeTrue())
report := deprecationTracker.DeprecationsReport()
Ω(report).Should(ContainSubstring("--int64Flag is deprecated, use --int-64-flag instead"))
Ω(report).Should(ContainSubstring("https://onsi.github.io/ginkgo/MIGRATING_TO_V2#no-more-camel-case"))
Ω(report).Should(ContainSubstring("--stringFlag is deprecated, use --string-flag instead"))
})
})
})
Describe("Emitting Usage information", func() {
It("emits information by section", func() {
expectedUsage := []string{
"{{red}}{{bold}}{{underline}}Candy Section{{/}}", //Candy section
"So sweet.", //with heading
" {{red}}--string-flag{{/}} [name] {{gray}}(default: Gerald){{/}}", //flag with usage argument and default value
" {{light-gray}}string-usage{{/}}",
" {{red}}--int-64-flag{{/}} [int] {{gray}}{{/}}",
" {{light-gray}}int-64-usage{{/}}",
" {{red}}--bool-flag{{/}} {{gray}}{{/}}",
" {{light-gray}}bool-usage{{/}}",
"",
"{{blue}}{{bold}}{{underline}}Dairy Section{{/}}", //Dairy section is Succinct...
"Abbreviated section",
" {{blue}}--float-64-flag, --string-slice-flag{{/}}", //so flags are just enumerated, without documentation
"",
" --int-flag{{/}} [int] {{gray}}{{/}}",
" {{light-gray}}int-usage{{/}}",
"",
"",
}
Ω(flagSet.Usage()).Should(Equal(strings.Join(expectedUsage, "\n")))
})
})
})
Describe("A GinkgoFlagSet attached to an existing golang flagset", func() {
var goFlagSet *flag.FlagSet
BeforeEach(func() {
var err error
goFlagSet = flag.NewFlagSet("go-set", flag.ContinueOnError)
goStringFlag := ""
goIntFlag := 0
goFlagSet.StringVar(&goStringFlag, "go-string-flag", "bob", "sets via `go`")
goFlagSet.IntVar(&goIntFlag, "go-int-flag", 0, "an integer, please")
flagSet, err = types.NewAttachedGinkgoFlagSet(goFlagSet, flags, bindings, sections, types.GinkgoFlagSection{
Heading: "The go flags...",
})
Ω(err).ShouldNot(HaveOccurred())
})
It("attaches its flags to go flag set, including deprecated flags", func() {
registeredFlags := map[string]*flag.Flag{}
goFlagSet.VisitAll(func(flag *flag.Flag) {
registeredFlags[flag.Name] = flag
})
Ω(registeredFlags["string-flag"].Usage).Should(Equal("string-usage"))
Ω(registeredFlags["int-64-flag"].Usage).Should(Equal("int-64-usage"))
Ω(registeredFlags["float-64-flag"].Usage).Should(Equal("float-64-usage"))
Ω(registeredFlags["int-flag"].Usage).Should(Equal("int-usage"))
Ω(registeredFlags["bool-flag"].Usage).Should(Equal("bool-usage"))
Ω(registeredFlags["string-slice-flag"].Usage).Should(Equal("string-slice-usage"))
Ω(registeredFlags["string-flag"].DefValue).Should(Equal("the default string"))
Ω(registeredFlags["int-64-flag"].DefValue).Should(Equal("1138"))
Ω(registeredFlags["float-64-flag"].DefValue).Should(Equal("3.141"))
Ω(registeredFlags["int-flag"].DefValue).Should(Equal("2009"))
Ω(registeredFlags["bool-flag"].DefValue).Should(Equal("true"))
Ω(registeredFlags["stringFlag"].Usage).Should(Equal("[DEPRECATED] use --string-flag instead"))
Ω(registeredFlags["int64Flag"].Usage).Should(Equal("[DEPRECATED] use --int-64-flag instead"))
Ω(registeredFlags["deprecated-flag"].Usage).Should(Equal("[DEPRECATED] deprecated-usage"))
})
It("overrides the goFlagSet's usage", func() {
buf := gbytes.NewBuffer()
goFlagSet.SetOutput(buf)
goFlagSet.Parse([]string{"--oops"})
Ω(string(buf.Contents())).Should(Equal("flag provided but not defined: -oops\n" + flagSet.Usage() + "\n"))
})
It("includes the go FlagSets flags in their own section", func() {
expectedUsage := []string{
"{{red}}{{bold}}{{underline}}Candy Section{{/}}",
"So sweet.",
" {{red}}--string-flag{{/}} [name] {{gray}}(default: Gerald){{/}}",
" {{light-gray}}string-usage{{/}}",
" {{red}}--int-64-flag{{/}} [int] {{gray}}{{/}}",
" {{light-gray}}int-64-usage{{/}}",
" {{red}}--bool-flag{{/}} {{gray}}{{/}}",
" {{light-gray}}bool-usage{{/}}",
"",
"{{blue}}{{bold}}{{underline}}Dairy Section{{/}}",
"Abbreviated section",
" {{blue}}--float-64-flag, --string-slice-flag{{/}}",
"",
" --int-flag{{/}} [int] {{gray}}{{/}}",
" {{light-gray}}int-usage{{/}}",
"",
"{{bold}}{{underline}}The go flags...{{/}}", //separate go flags section at the bottom, includes flags that are in the go FlagSet but not in the GinkgoFLagSet
" -go-int-flag int",
" an integer, please",
" -go-string-flag go", //Note the processing of `go` using flag.UnquoteUsage()
" sets via go",
"",
}
Ω(flagSet.Usage()).Should(Equal(strings.Join(expectedUsage, "\n")))
})
})
})
Describe("GenerateFlagArgs", func() {
type StructA struct {
StringProperty string
Int64Property int64
Float64Property float64
UnsupportedInt32 int32
}
type StructB struct {
IntProperty int
BoolProperty bool
StringSliceProperty []string
DeprecatedProperty string
}
var A StructA
var B StructB
var flags types.GinkgoFlags
var bindings map[string]any
BeforeEach(func() {
A = StructA{
StringProperty: "the default string",
Int64Property: 1138,
Float64Property: 3.141,
}
B = StructB{
IntProperty: 2009,
BoolProperty: true,
StringSliceProperty: []string{"once", "upon", "a time"},
DeprecatedProperty: "n/a",
}
bindings = map[string]any{
"A": &A,
"B": &B,
}
flags = types.GinkgoFlags{
{Name: "string-flag", KeyPath: "A.StringProperty", DeprecatedName: "stringFlag"},
{Name: "int-64-flag", KeyPath: "A.Int64Property", AlwaysExport: true},
{Name: "float-64-flag", KeyPath: "A.Float64Property"},
{Name: "int-flag", KeyPath: "B.IntProperty", ExportAs: "alias-int-flag"},
{Name: "bool-flag", KeyPath: "B.BoolProperty", ExportAs: "alias-bool-flag", AlwaysExport: true},
{Name: "string-slice-flag", KeyPath: "B.StringSliceProperty"},
{DeprecatedName: "deprecated-flag", KeyPath: "B.DeprecatedProperty"},
}
})
It("generates an array of flag arguments that, if parsed, reproduce the values in the passed-in bindings", func() {
args, err := types.GenerateFlagArgs(flags, bindings)
Ω(err).ShouldNot(HaveOccurred())
Ω(args).Should(Equal([]string{
"--string-flag=the default string",
"--int-64-flag=1138",
"--float-64-flag=3.141000",
"--alias-int-flag=2009",
"--alias-bool-flag",
"--string-slice-flag=once",
"--string-slice-flag=upon",
"--string-slice-flag=a time",
}))
})
It("does not include 0 values unless AlwaysExport is true", func() {
A.StringProperty = ""
A.Int64Property = 0
B.IntProperty = 0
B.BoolProperty = false
args, err := types.GenerateFlagArgs(flags, bindings)
Ω(err).ShouldNot(HaveOccurred())
Ω(args).Should(Equal([]string{
"--int-64-flag=0", //always export
"--float-64-flag=3.141000",
"--string-slice-flag=once",
"--string-slice-flag=upon",
"--string-slice-flag=a time",
}))
})
It("errors if there is a keypath issue", func() {
flags[0] = types.GinkgoFlag{Name: "unsupported-type", KeyPath: "A.UnsupportedInt32"}
args, err := types.GenerateFlagArgs(flags, bindings)
Ω(err).Should(MatchError("unsupported type int32"))
Ω(args).Should(BeEmpty())
flags[0] = types.GinkgoFlag{Name: "bad-keypath", KeyPath: "A.StringProoperty"}
args, err = types.GenerateFlagArgs(flags, bindings)
Ω(err).Should(MatchError("could not load KeyPath: A.StringProoperty"))
Ω(args).Should(BeEmpty())
})
})
})