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ldclient_evaluation_all_flags_test.go
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ldclient_evaluation_all_flags_test.go
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package ldclient
import (
"errors"
"testing"
"github.com/launchdarkly/go-server-sdk/v7/internal/sharedtest/mocks"
"github.com/launchdarkly/go-sdk-common/v3/ldlog"
"github.com/launchdarkly/go-sdk-common/v3/ldlogtest"
"github.com/launchdarkly/go-sdk-common/v3/ldreason"
"github.com/launchdarkly/go-sdk-common/v3/ldtime"
"github.com/launchdarkly/go-sdk-common/v3/lduser"
"github.com/launchdarkly/go-sdk-common/v3/ldvalue"
"github.com/launchdarkly/go-server-sdk-evaluation/v3/ldbuilders"
"github.com/launchdarkly/go-server-sdk/v7/interfaces/flagstate"
"github.com/launchdarkly/go-server-sdk/v7/internal/datakinds"
"github.com/launchdarkly/go-server-sdk/v7/internal/datastore"
"github.com/launchdarkly/go-server-sdk/v7/internal/sharedtest"
"github.com/launchdarkly/go-server-sdk/v7/ldcomponents"
"github.com/launchdarkly/go-server-sdk/v7/subsystems"
"github.com/stretchr/testify/assert"
)
func TestAllFlagsStateGetsState(t *testing.T) {
flag1 := ldbuilders.NewFlagBuilder("key1").Version(100).OffVariation(0).
Variations(ldvalue.String("value1")).Build()
flag2 := ldbuilders.NewFlagBuilder("key2").Version(200).OffVariation(1).
Variations(ldvalue.String("x"), ldvalue.String("value2")).
TrackEvents(true).DebugEventsUntilDate(1000).Build()
// flag3 has an experiment (evaluation is a fallthrough and TrackEventsFallthrough is on)
flag3 := ldbuilders.NewFlagBuilder("key3").Version(300).On(true).FallthroughVariation(1).
Variations(ldvalue.String("x"), ldvalue.String("value3")).
TrackEvents(false).TrackEventsFallthrough(true).Build()
withClientEvalTestParams(func(p clientEvalTestParams) {
p.data.UsePreconfiguredFlag(flag1)
p.data.UsePreconfiguredFlag(flag2)
p.data.UsePreconfiguredFlag(flag3)
state := p.client.AllFlagsState(lduser.NewUser("userkey"))
assert.True(t, state.IsValid())
expected := flagstate.NewAllFlagsBuilder().
AddFlag("key1", flagstate.FlagState{
Value: ldvalue.String("value1"),
Variation: ldvalue.NewOptionalInt(0),
Version: 100,
}).
AddFlag("key2", flagstate.FlagState{
Value: ldvalue.String("value2"),
Variation: ldvalue.NewOptionalInt(1),
Version: 200,
TrackEvents: true,
DebugEventsUntilDate: ldtime.UnixMillisecondTime(1000),
}).
AddFlag("key3", flagstate.FlagState{
Value: ldvalue.String("value3"),
Variation: ldvalue.NewOptionalInt(1),
Version: 300,
Reason: ldreason.NewEvalReasonFallthrough(),
TrackEvents: true,
TrackReason: true,
}).
Build()
assert.Equal(t, expected, state)
})
}
func TestAllFlagsStateGetsStateWithReasons(t *testing.T) {
flag1 := ldbuilders.NewFlagBuilder("key1").Version(100).On(false).OffVariation(0).
Variations(ldvalue.String("value1")).Build()
flag2 := ldbuilders.NewFlagBuilder("key2").Version(200).OffVariation(1).
Variations(ldvalue.String("x"), ldvalue.String("value2")).
TrackEvents(true).DebugEventsUntilDate(1000).Build()
withClientEvalTestParams(func(p clientEvalTestParams) {
p.data.UsePreconfiguredFlag(flag1)
p.data.UsePreconfiguredFlag(flag2)
state := p.client.AllFlagsState(lduser.NewUser("userkey"), flagstate.OptionWithReasons())
assert.True(t, state.IsValid())
expected := flagstate.NewAllFlagsBuilder(flagstate.OptionWithReasons()).
AddFlag("key1", flagstate.FlagState{
Value: ldvalue.String("value1"),
Variation: ldvalue.NewOptionalInt(0),
Version: 100,
Reason: ldreason.NewEvalReasonOff(),
}).
AddFlag("key2", flagstate.FlagState{
Value: ldvalue.String("value2"),
Variation: ldvalue.NewOptionalInt(1),
Version: 200,
Reason: ldreason.NewEvalReasonOff(),
TrackEvents: true,
DebugEventsUntilDate: ldtime.UnixMillisecondTime(1000),
}).
Build()
assert.Equal(t, expected, state)
})
}
func TestAllFlagsStateCanFilterForOnlyClientSideFlags(t *testing.T) {
flag1 := ldbuilders.NewFlagBuilder("server-side-1").Build()
flag2 := ldbuilders.NewFlagBuilder("server-side-2").Build()
flag3 := ldbuilders.NewFlagBuilder("client-side-1").SingleVariation(ldvalue.String("value1")).
ClientSideUsingEnvironmentID(true).Build()
flag4 := ldbuilders.NewFlagBuilder("client-side-2").SingleVariation(ldvalue.String("value2")).
ClientSideUsingEnvironmentID(true).Build()
withClientEvalTestParams(func(p clientEvalTestParams) {
p.data.UsePreconfiguredFlag(flag1)
p.data.UsePreconfiguredFlag(flag2)
p.data.UsePreconfiguredFlag(flag3)
p.data.UsePreconfiguredFlag(flag4)
state := p.client.AllFlagsState(lduser.NewUser("userkey"), flagstate.OptionClientSideOnly())
assert.True(t, state.IsValid())
expectedValues := map[string]ldvalue.Value{"client-side-1": ldvalue.String("value1"), "client-side-2": ldvalue.String("value2")}
assert.Equal(t, expectedValues, state.ToValuesMap())
})
}
func TestAllFlagsStateCanOmitDetailForUntrackedFlags(t *testing.T) {
futureTime := ldtime.UnixMillisNow() + 100000
// flag1 does not get full detials because neither event tracking nor debugging is on and there's no experiment
flag1 := ldbuilders.NewFlagBuilder("key1").Version(100).OffVariation(0).Variations(ldvalue.String("value1")).Build()
// flag2 gets full details because event tracking is on
flag2 := ldbuilders.NewFlagBuilder("key2").Version(200).OffVariation(1).Variations(ldvalue.String("x"), ldvalue.String("value2")).
TrackEvents(true).Build()
// flag3 gets full details because debugging is on
flag3 := ldbuilders.NewFlagBuilder("key3").Version(300).OffVariation(1).Variations(ldvalue.String("x"), ldvalue.String("value3")).
TrackEvents(false).DebugEventsUntilDate(futureTime).Build()
// flag4 gets full details because there's an experiment (evaluation is a fallthrough and TrackEventsFallthrough is on)
flag4 := ldbuilders.NewFlagBuilder("key4").Version(400).On(true).FallthroughVariation(1).
Variations(ldvalue.String("x"), ldvalue.String("value4")).
TrackEvents(false).TrackEventsFallthrough(true).Build()
withClientEvalTestParams(func(p clientEvalTestParams) {
p.data.UsePreconfiguredFlag(flag1)
p.data.UsePreconfiguredFlag(flag2)
p.data.UsePreconfiguredFlag(flag3)
p.data.UsePreconfiguredFlag(flag4)
state := p.client.AllFlagsState(lduser.NewUser("userkey"), flagstate.OptionWithReasons(),
flagstate.OptionDetailsOnlyForTrackedFlags())
assert.True(t, state.IsValid())
expected := flagstate.NewAllFlagsBuilder(flagstate.OptionWithReasons()).
AddFlag("key1", flagstate.FlagState{
Value: ldvalue.String("value1"),
Variation: ldvalue.NewOptionalInt(0),
Version: 100,
Reason: ldreason.NewEvalReasonOff(),
OmitDetails: true,
}).
AddFlag("key2", flagstate.FlagState{
Value: ldvalue.String("value2"),
Variation: ldvalue.NewOptionalInt(1),
Version: 200,
Reason: ldreason.NewEvalReasonOff(),
TrackEvents: true,
}).
AddFlag("key3", flagstate.FlagState{
Value: ldvalue.String("value3"),
Variation: ldvalue.NewOptionalInt(1),
Version: 300,
Reason: ldreason.NewEvalReasonOff(),
DebugEventsUntilDate: futureTime,
}).
AddFlag("key4", flagstate.FlagState{
Value: ldvalue.String("value4"),
Variation: ldvalue.NewOptionalInt(1),
Version: 400,
Reason: ldreason.NewEvalReasonFallthrough(),
TrackEvents: true,
TrackReason: true,
}).
Build()
assert.Equal(t, expected, state)
})
}
func TestAllFlagsStateReturnsInvalidStateIfClientAndStoreAreNotInitialized(t *testing.T) {
mockLoggers := ldlogtest.NewMockLog()
client := makeTestClientWithConfig(func(c *Config) {
c.DataSource = mocks.DataSourceThatNeverInitializes()
c.Logging = ldcomponents.Logging().Loggers(mockLoggers.Loggers)
})
defer client.Close()
state := client.AllFlagsState(evalTestUser)
assert.False(t, state.IsValid())
assert.Len(t, state.ToValuesMap(), 0)
}
func TestAllFlagsStateUsesStoreAndLogsWarningIfClientIsNotInitializedButStoreIsInitialized(t *testing.T) {
mockLoggers := ldlogtest.NewMockLog()
flag := ldbuilders.NewFlagBuilder(evalFlagKey).SingleVariation(ldvalue.Bool(true)).Build()
store := datastore.NewInMemoryDataStore(sharedtest.NewTestLoggers())
_ = store.Init(nil)
_, _ = store.Upsert(datakinds.Features, flag.Key, sharedtest.FlagDescriptor(flag))
client := makeTestClientWithConfig(func(c *Config) {
c.DataSource = mocks.DataSourceThatNeverInitializes()
c.DataStore = mocks.SingleComponentConfigurer[subsystems.DataStore]{Instance: store}
c.Logging = ldcomponents.Logging().Loggers(mockLoggers.Loggers)
})
defer client.Close()
state := client.AllFlagsState(evalTestUser)
assert.True(t, state.IsValid())
assert.Len(t, state.ToValuesMap(), 1)
assert.Len(t, mockLoggers.GetOutput(ldlog.Warn), 1)
assert.Contains(t, mockLoggers.GetOutput(ldlog.Warn)[0], "using last known values")
}
func TestAllFlagsStateReturnsInvalidStateIfStoreReturnsError(t *testing.T) {
myError := errors.New("sorry")
store := mocks.NewCapturingDataStore(datastore.NewInMemoryDataStore(sharedtest.NewTestLoggers()))
_ = store.Init(nil)
store.SetFakeError(myError)
mockLoggers := ldlogtest.NewMockLog()
client := makeTestClientWithConfig(func(c *Config) {
c.DataSource = mocks.DataSourceThatIsAlwaysInitialized()
c.DataStore = mocks.SingleComponentConfigurer[subsystems.DataStore]{Instance: store}
c.Logging = ldcomponents.Logging().Loggers(mockLoggers.Loggers)
})
defer client.Close()
state := client.AllFlagsState(evalTestUser)
assert.False(t, state.IsValid())
assert.Len(t, state.ToValuesMap(), 0)
assert.Len(t, mockLoggers.GetOutput(ldlog.Warn), 1)
assert.Contains(t, mockLoggers.GetOutput(ldlog.Warn)[0], "Unable to fetch flags")
}