4853dd3144
Instead of just resetting the temp dir, let's reset all environment variables. Environment variables are a pain for testing. A more reliable solution would be to refactor all functions that read from the environment to take the environment as an explicit argument, and then provide a consistent environment during testing. But that would be a significantly larger change than this one. Related to #1105.
578 lines
17 KiB
Go
578 lines
17 KiB
Go
package cli
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import (
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"context"
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"flag"
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"os"
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"sort"
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"strings"
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"testing"
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"time"
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)
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func TestNewContext(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Int("myflag", 12, "doc")
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set.Int64("myflagInt64", int64(12), "doc")
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set.Uint("myflagUint", uint(93), "doc")
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set.Uint64("myflagUint64", uint64(93), "doc")
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set.Float64("myflag64", float64(17), "doc")
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globalSet := flag.NewFlagSet("test", 0)
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globalSet.Int("myflag", 42, "doc")
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globalSet.Int64("myflagInt64", int64(42), "doc")
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globalSet.Uint("myflagUint", uint(33), "doc")
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globalSet.Uint64("myflagUint64", uint64(33), "doc")
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globalSet.Float64("myflag64", float64(47), "doc")
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globalCtx := NewContext(nil, globalSet, nil)
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command := &Command{Name: "mycommand"}
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c := NewContext(nil, set, globalCtx)
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c.Command = command
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expect(t, c.Int("myflag"), 12)
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expect(t, c.Int64("myflagInt64"), int64(12))
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expect(t, c.Uint("myflagUint"), uint(93))
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expect(t, c.Uint64("myflagUint64"), uint64(93))
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expect(t, c.Float64("myflag64"), float64(17))
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expect(t, c.Command.Name, "mycommand")
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}
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func TestContext_Int(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Int("myflag", 12, "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Int("top-flag", 13, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Int("myflag"), 12)
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expect(t, c.Int("top-flag"), 13)
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}
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func TestContext_Int64(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Int64("myflagInt64", 12, "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Int64("top-flag", 13, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Int64("myflagInt64"), int64(12))
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expect(t, c.Int64("top-flag"), int64(13))
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}
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func TestContext_Uint(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Uint("myflagUint", uint(13), "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Uint("top-flag", uint(14), "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Uint("myflagUint"), uint(13))
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expect(t, c.Uint("top-flag"), uint(14))
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}
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func TestContext_Uint64(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Uint64("myflagUint64", uint64(9), "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Uint64("top-flag", uint64(10), "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Uint64("myflagUint64"), uint64(9))
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expect(t, c.Uint64("top-flag"), uint64(10))
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}
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func TestContext_Float64(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Float64("myflag", float64(17), "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Float64("top-flag", float64(18), "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Float64("myflag"), float64(17))
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expect(t, c.Float64("top-flag"), float64(18))
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}
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func TestContext_Duration(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Duration("myflag", 12*time.Second, "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Duration("top-flag", 13*time.Second, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Duration("myflag"), 12*time.Second)
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expect(t, c.Duration("top-flag"), 13*time.Second)
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}
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func TestContext_String(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.String("myflag", "hello world", "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.String("top-flag", "hai veld", "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.String("myflag"), "hello world")
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expect(t, c.String("top-flag"), "hai veld")
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}
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func TestContext_Path(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.String("path", "path/to/file", "path to file")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.String("top-path", "path/to/top/file", "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Path("path"), "path/to/file")
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expect(t, c.Path("top-path"), "path/to/top/file")
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}
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func TestContext_Bool(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("myflag", false, "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Bool("top-flag", true, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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c := NewContext(nil, set, parentCtx)
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expect(t, c.Bool("myflag"), false)
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expect(t, c.Bool("top-flag"), true)
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}
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func TestContext_Args(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("myflag", false, "doc")
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c := NewContext(nil, set, nil)
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_ = set.Parse([]string{"--myflag", "bat", "baz"})
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expect(t, c.Args().Len(), 2)
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expect(t, c.Bool("myflag"), true)
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}
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func TestContext_NArg(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("myflag", false, "doc")
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c := NewContext(nil, set, nil)
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_ = set.Parse([]string{"--myflag", "bat", "baz"})
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expect(t, c.NArg(), 2)
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}
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func TestContext_IsSet(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("one-flag", false, "doc")
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set.Bool("two-flag", false, "doc")
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set.String("three-flag", "hello world", "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Bool("top-flag", true, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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ctx := NewContext(nil, set, parentCtx)
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_ = set.Parse([]string{"--one-flag", "--two-flag", "--three-flag", "frob"})
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_ = parentSet.Parse([]string{"--top-flag"})
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expect(t, ctx.IsSet("one-flag"), true)
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expect(t, ctx.IsSet("two-flag"), true)
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expect(t, ctx.IsSet("three-flag"), true)
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expect(t, ctx.IsSet("top-flag"), true)
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expect(t, ctx.IsSet("bogus"), false)
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}
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// XXX Corresponds to hack in context.IsSet for flags with EnvVar field
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// Should be moved to `flag_test` in v2
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func TestContext_IsSet_fromEnv(t *testing.T) {
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var (
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timeoutIsSet, tIsSet bool
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noEnvVarIsSet, nIsSet bool
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passwordIsSet, pIsSet bool
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unparsableIsSet, uIsSet bool
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)
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defer resetEnv(os.Environ())
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os.Clearenv()
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_ = os.Setenv("APP_TIMEOUT_SECONDS", "15.5")
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_ = os.Setenv("APP_PASSWORD", "")
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a := App{
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Flags: []Flag{
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&Float64Flag{Name: "timeout", Aliases: []string{"t"}, EnvVars: []string{"APP_TIMEOUT_SECONDS"}},
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&StringFlag{Name: "password", Aliases: []string{"p"}, EnvVars: []string{"APP_PASSWORD"}},
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&Float64Flag{Name: "unparsable", Aliases: []string{"u"}, EnvVars: []string{"APP_UNPARSABLE"}},
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&Float64Flag{Name: "no-env-var", Aliases: []string{"n"}},
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},
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Action: func(ctx *Context) error {
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timeoutIsSet = ctx.IsSet("timeout")
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tIsSet = ctx.IsSet("t")
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passwordIsSet = ctx.IsSet("password")
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pIsSet = ctx.IsSet("p")
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unparsableIsSet = ctx.IsSet("unparsable")
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uIsSet = ctx.IsSet("u")
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noEnvVarIsSet = ctx.IsSet("no-env-var")
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nIsSet = ctx.IsSet("n")
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return nil
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},
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}
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_ = a.Run([]string{"run"})
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expect(t, timeoutIsSet, true)
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expect(t, tIsSet, true)
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expect(t, passwordIsSet, true)
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expect(t, pIsSet, true)
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expect(t, noEnvVarIsSet, false)
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expect(t, nIsSet, false)
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_ = os.Setenv("APP_UNPARSABLE", "foobar")
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_ = a.Run([]string{"run"})
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expect(t, unparsableIsSet, false)
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expect(t, uIsSet, false)
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}
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func TestContext_NumFlags(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("myflag", false, "doc")
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set.String("otherflag", "hello world", "doc")
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globalSet := flag.NewFlagSet("test", 0)
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globalSet.Bool("myflagGlobal", true, "doc")
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globalCtx := NewContext(nil, globalSet, nil)
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c := NewContext(nil, set, globalCtx)
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_ = set.Parse([]string{"--myflag", "--otherflag=foo"})
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_ = globalSet.Parse([]string{"--myflagGlobal"})
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expect(t, c.NumFlags(), 2)
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}
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func TestContext_Set(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Int("int", 5, "an int")
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c := NewContext(nil, set, nil)
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expect(t, c.IsSet("int"), false)
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_ = c.Set("int", "1")
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expect(t, c.Int("int"), 1)
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expect(t, c.IsSet("int"), true)
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}
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func TestContext_LocalFlagNames(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("one-flag", false, "doc")
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set.String("two-flag", "hello world", "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Bool("top-flag", true, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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ctx := NewContext(nil, set, parentCtx)
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_ = set.Parse([]string{"--one-flag", "--two-flag=foo"})
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_ = parentSet.Parse([]string{"--top-flag"})
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actualFlags := ctx.LocalFlagNames()
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sort.Strings(actualFlags)
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expect(t, actualFlags, []string{"one-flag", "two-flag"})
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}
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func TestContext_FlagNames(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("one-flag", false, "doc")
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set.String("two-flag", "hello world", "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Bool("top-flag", true, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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ctx := NewContext(nil, set, parentCtx)
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_ = set.Parse([]string{"--one-flag", "--two-flag=foo"})
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_ = parentSet.Parse([]string{"--top-flag"})
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actualFlags := ctx.FlagNames()
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sort.Strings(actualFlags)
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expect(t, actualFlags, []string{"one-flag", "top-flag", "two-flag"})
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}
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func TestContext_Lineage(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("local-flag", false, "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Bool("top-flag", true, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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ctx := NewContext(nil, set, parentCtx)
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_ = set.Parse([]string{"--local-flag"})
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_ = parentSet.Parse([]string{"--top-flag"})
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lineage := ctx.Lineage()
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expect(t, len(lineage), 2)
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expect(t, lineage[0], ctx)
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expect(t, lineage[1], parentCtx)
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}
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func TestContext_lookupFlagSet(t *testing.T) {
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set := flag.NewFlagSet("test", 0)
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set.Bool("local-flag", false, "doc")
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parentSet := flag.NewFlagSet("test", 0)
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parentSet.Bool("top-flag", true, "doc")
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parentCtx := NewContext(nil, parentSet, nil)
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ctx := NewContext(nil, set, parentCtx)
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_ = set.Parse([]string{"--local-flag"})
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_ = parentSet.Parse([]string{"--top-flag"})
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fs := lookupFlagSet("top-flag", ctx)
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expect(t, fs, parentCtx.flagSet)
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fs = lookupFlagSet("local-flag", ctx)
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expect(t, fs, ctx.flagSet)
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if fs := lookupFlagSet("frob", ctx); fs != nil {
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t.Fail()
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}
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}
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func TestNonNilContext(t *testing.T) {
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ctx := NewContext(nil, nil, nil)
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if ctx.Context == nil {
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t.Fatal("expected a non nil context when no parent is present")
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}
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}
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// TestContextPropagation tests that
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// *cli.Context always has a valid
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// context.Context
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func TestContextPropagation(t *testing.T) {
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parent := NewContext(nil, nil, nil)
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parent.Context = context.WithValue(context.Background(), "key", "val")
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ctx := NewContext(nil, nil, parent)
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val := ctx.Context.Value("key")
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if val == nil {
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t.Fatal("expected a parent context to be inherited but got nil")
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}
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valstr, _ := val.(string)
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if valstr != "val" {
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t.Fatalf("expected the context value to be %q but got %q", "val", valstr)
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}
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parent = NewContext(nil, nil, nil)
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parent.Context = nil
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ctx = NewContext(nil, nil, parent)
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if ctx.Context == nil {
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t.Fatal("expected context to not be nil even if the parent's context is nil")
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}
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}
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func TestContextAttributeAccessing(t *testing.T) {
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tdata := []struct {
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testCase string
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setBoolInput string
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ctxBoolInput string
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newContextInput *Context
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}{
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{
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testCase: "empty",
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setBoolInput: "",
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ctxBoolInput: "",
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newContextInput: nil,
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},
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{
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testCase: "empty_with_background_context",
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setBoolInput: "",
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ctxBoolInput: "",
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newContextInput: &Context{Context: context.Background()},
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},
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{
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testCase: "empty_set_bool_and_present_ctx_bool",
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setBoolInput: "",
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ctxBoolInput: "ctx-bool",
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newContextInput: nil,
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},
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{
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testCase: "present_set_bool_and_present_ctx_bool_with_background_context",
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setBoolInput: "",
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ctxBoolInput: "ctx-bool",
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newContextInput: &Context{Context: context.Background()},
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},
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{
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testCase: "present_set_bool_and_present_ctx_bool",
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setBoolInput: "ctx-bool",
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ctxBoolInput: "ctx-bool",
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newContextInput: nil,
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},
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{
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testCase: "present_set_bool_and_present_ctx_bool_with_background_context",
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setBoolInput: "ctx-bool",
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ctxBoolInput: "ctx-bool",
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newContextInput: &Context{Context: context.Background()},
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},
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{
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testCase: "present_set_bool_and_different_ctx_bool",
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setBoolInput: "ctx-bool",
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ctxBoolInput: "not-ctx-bool",
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newContextInput: nil,
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},
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{
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testCase: "present_set_bool_and_different_ctx_bool_with_background_context",
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setBoolInput: "ctx-bool",
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ctxBoolInput: "not-ctx-bool",
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newContextInput: &Context{Context: context.Background()},
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},
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}
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for _, test := range tdata {
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t.Run(test.testCase, func(t *testing.T) {
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// setup
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set := flag.NewFlagSet("some-flag-set-name", 0)
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set.Bool(test.setBoolInput, false, "usage documentation")
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ctx := NewContext(nil, set, test.newContextInput)
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// logic under test
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value := ctx.Bool(test.ctxBoolInput)
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// assertions
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if value != false {
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t.Errorf("expected \"value\" to be false, but it was not")
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}
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})
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}
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}
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func TestCheckRequiredFlags(t *testing.T) {
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tdata := []struct {
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testCase string
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parseInput []string
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envVarInput [2]string
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flags []Flag
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expectedAnError bool
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expectedErrorContents []string
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}{
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{
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testCase: "empty",
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},
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{
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testCase: "optional",
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flags: []Flag{
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&StringFlag{Name: "optionalFlag"},
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},
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},
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{
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testCase: "required",
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flags: []Flag{
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&StringFlag{Name: "requiredFlag", Required: true},
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},
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expectedAnError: true,
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expectedErrorContents: []string{"requiredFlag"},
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},
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{
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testCase: "required_and_present",
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flags: []Flag{
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&StringFlag{Name: "requiredFlag", Required: true},
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},
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parseInput: []string{"--requiredFlag", "myinput"},
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},
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{
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testCase: "required_and_present_via_env_var",
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flags: []Flag{
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&StringFlag{Name: "requiredFlag", Required: true, EnvVars: []string{"REQUIRED_FLAG"}},
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},
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envVarInput: [2]string{"REQUIRED_FLAG", "true"},
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},
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{
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testCase: "required_and_optional",
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flags: []Flag{
|
|
&StringFlag{Name: "requiredFlag", Required: true},
|
|
&StringFlag{Name: "optionalFlag"},
|
|
},
|
|
expectedAnError: true,
|
|
},
|
|
{
|
|
testCase: "required_and_optional_and_optional_present",
|
|
flags: []Flag{
|
|
&StringFlag{Name: "requiredFlag", Required: true},
|
|
&StringFlag{Name: "optionalFlag"},
|
|
},
|
|
parseInput: []string{"--optionalFlag", "myinput"},
|
|
expectedAnError: true,
|
|
},
|
|
{
|
|
testCase: "required_and_optional_and_optional_present_via_env_var",
|
|
flags: []Flag{
|
|
&StringFlag{Name: "requiredFlag", Required: true},
|
|
&StringFlag{Name: "optionalFlag", EnvVars: []string{"OPTIONAL_FLAG"}},
|
|
},
|
|
envVarInput: [2]string{"OPTIONAL_FLAG", "true"},
|
|
expectedAnError: true,
|
|
},
|
|
{
|
|
testCase: "required_and_optional_and_required_present",
|
|
flags: []Flag{
|
|
&StringFlag{Name: "requiredFlag", Required: true},
|
|
&StringFlag{Name: "optionalFlag"},
|
|
},
|
|
parseInput: []string{"--requiredFlag", "myinput"},
|
|
},
|
|
{
|
|
testCase: "two_required",
|
|
flags: []Flag{
|
|
&StringFlag{Name: "requiredFlagOne", Required: true},
|
|
&StringFlag{Name: "requiredFlagTwo", Required: true},
|
|
},
|
|
expectedAnError: true,
|
|
expectedErrorContents: []string{"requiredFlagOne", "requiredFlagTwo"},
|
|
},
|
|
{
|
|
testCase: "two_required_and_one_present",
|
|
flags: []Flag{
|
|
&StringFlag{Name: "requiredFlag", Required: true},
|
|
&StringFlag{Name: "requiredFlagTwo", Required: true},
|
|
},
|
|
parseInput: []string{"--requiredFlag", "myinput"},
|
|
expectedAnError: true,
|
|
},
|
|
{
|
|
testCase: "two_required_and_both_present",
|
|
flags: []Flag{
|
|
&StringFlag{Name: "requiredFlag", Required: true},
|
|
&StringFlag{Name: "requiredFlagTwo", Required: true},
|
|
},
|
|
parseInput: []string{"--requiredFlag", "myinput", "--requiredFlagTwo", "myinput"},
|
|
},
|
|
{
|
|
testCase: "required_flag_with_short_name",
|
|
flags: []Flag{
|
|
&StringSliceFlag{Name: "names", Aliases: []string{"N"}, Required: true},
|
|
},
|
|
parseInput: []string{"-N", "asd", "-N", "qwe"},
|
|
},
|
|
{
|
|
testCase: "required_flag_with_multiple_short_names",
|
|
flags: []Flag{
|
|
&StringSliceFlag{Name: "names", Aliases: []string{"N", "n"}, Required: true},
|
|
},
|
|
parseInput: []string{"-n", "asd", "-n", "qwe"},
|
|
},
|
|
}
|
|
|
|
for _, test := range tdata {
|
|
t.Run(test.testCase, func(t *testing.T) {
|
|
// setup
|
|
if test.envVarInput[0] != "" {
|
|
defer resetEnv(os.Environ())
|
|
os.Clearenv()
|
|
_ = os.Setenv(test.envVarInput[0], test.envVarInput[1])
|
|
}
|
|
|
|
set := flag.NewFlagSet("test", 0)
|
|
for _, flags := range test.flags {
|
|
_ = flags.Apply(set)
|
|
}
|
|
_ = set.Parse(test.parseInput)
|
|
|
|
c := &Context{}
|
|
ctx := NewContext(c.App, set, c)
|
|
ctx.Command.Flags = test.flags
|
|
|
|
// logic under test
|
|
err := checkRequiredFlags(test.flags, ctx)
|
|
|
|
// assertions
|
|
if test.expectedAnError && err == nil {
|
|
t.Errorf("expected an error, but there was none")
|
|
}
|
|
if !test.expectedAnError && err != nil {
|
|
t.Errorf("did not expected an error, but there was one: %s", err)
|
|
}
|
|
for _, errString := range test.expectedErrorContents {
|
|
if err != nil {
|
|
if !strings.Contains(err.Error(), errString) {
|
|
t.Errorf("expected error %q to contain %q, but it didn't!", err.Error(), errString)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|