LDTestData Struct Reference

An opaque TestData object. More...

#include <test_data.h>

Detailed Description

An opaque TestData object.

A mechanism for providing dynamically updatable feature flag state in a simplified form to an SDK client in test scenarios.

Unlike FileData, this mechanism does not use any external resources. It provides only the data that the application has put into it using LDTestDataUpdate.

struct LDTestData *td = LDTestDataInit();
 
{
   struct LDFlagBuilder *flag = LDTestDataFlag(td, "flag-key-1");
   LDFlagBuilderVariationForAllUsersBoolean(flag, true));
   LDTestDataUpdate(td, flag);
}
 
{
   struct LDClient *client;
   struct LDConfig *config = LDConfigNew("key"));
   LDConfigSetDataSource(config, LDTestDataCreateDataSource(td));
   if(!(client = LDClientInit(config, 10))) {
       LDConfigFree(config);
       return;
   }
}
 
{
   struct LDFlagBuilder *flag = LDTestDataFlag(td, "flag-key-2");
   LDFlagBuilderVariationForUserBoolean("some-user-key", LDBooleanTrue);
   LDFlagBuilderFallthroughVariationBoolean(LDBooleanFalse));
   LDTestDataUpdate(td, flag);
}

The above example uses a simple boolean flag, but more complex configurations are possible using the methods of the LDFlagBuilder that is returned by LDTestDataFlag. LDFlagBuilder supports many of the ways a flag can be configured on the LaunchDarkly dashboard, but does not currently support

1. rule operators other than "in" and "not in", or
2. percentage rollouts.

If the same LDTestData instance is used to configure multiple LDClient instances, any changes made to the data will propagate to all of the LDClients.

Since

2.4.6

See also

TestData

FileData

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The documentation for this struct was generated from the following file:

• include/launchdarkly/integrations/test_data.h