1+ import * as td from 'testdouble' ;
2+
3+ import {
4+ MOCK_PRECOMPUTED_WIRE_FILE ,
5+ MOCK_DEOBFUSCATED_PRECOMPUTED_RESPONSE_FILE ,
6+ readMockConfigurationWireResponse ,
7+ } from '../../test/testHelpers' ;
8+ import { logger } from '../application-logger' ;
9+ import { IAssignmentLogger } from '../assignment-logger' ;
10+ import { IBanditLogger } from '../bandit-logger' ;
11+ import { Configuration } from '../configuration' ;
12+ import { MemoryOnlyConfigurationStore } from '../configuration-store/memory.store' ;
13+ import { FormatEnum , VariationType , Variation } from '../interfaces' ;
14+ import { BanditActions } from '../types' ;
15+
16+ import EppoClient from './eppo-client' ;
17+
18+ describe ( 'EppoClient Precomputed Mode' , ( ) => {
19+ // Read both configurations for test reference
20+ const precomputedConfigurationWire = readMockConfigurationWireResponse ( MOCK_PRECOMPUTED_WIRE_FILE ) ;
21+ const initialConfiguration = Configuration . fromString ( precomputedConfigurationWire ) ;
22+
23+ // We only use deobfuscated configuration as a reference, not for creating a client
24+ const deobfuscatedPrecomputedWire = readMockConfigurationWireResponse ( MOCK_DEOBFUSCATED_PRECOMPUTED_RESPONSE_FILE ) ;
25+
26+ let client : EppoClient ;
27+ let mockAssignmentLogger : jest . Mocked < IAssignmentLogger > ;
28+ let mockBanditLogger : jest . Mocked < IBanditLogger > ;
29+
30+ beforeEach ( ( ) => {
31+ mockAssignmentLogger = { logAssignment : jest . fn ( ) } as jest . Mocked < IAssignmentLogger > ;
32+ mockBanditLogger = { logBanditAction : jest . fn ( ) } as jest . Mocked < IBanditLogger > ;
33+
34+ // Create EppoClient with precomputed configuration
35+ client = new EppoClient ( {
36+ sdkKey : 'test-key' ,
37+ sdkName : 'test-sdk' ,
38+ sdkVersion : '1.0.0' ,
39+ configuration : {
40+ initialConfiguration,
41+ initializationStrategy : 'none' ,
42+ enablePolling : false ,
43+ } ,
44+ } ) ;
45+
46+ client . setAssignmentLogger ( mockAssignmentLogger ) ;
47+ client . setBanditLogger ( mockBanditLogger ) ;
48+ } ) ;
49+
50+ it ( 'correctly evaluates string flag' , ( ) => {
51+ const result = client . getStringAssignment ( 'string-flag' , 'test-subject-key' , { } , 'default' ) ;
52+ expect ( result ) . toBe ( 'red' ) ;
53+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
54+ } ) ;
55+
56+ it ( 'correctly evaluates boolean flag' , ( ) => {
57+ const result = client . getBooleanAssignment ( 'boolean-flag' , 'test-subject-key' , { } , false ) ;
58+ expect ( result ) . toBe ( true ) ;
59+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
60+ } ) ;
61+
62+ it ( 'correctly evaluates integer flag' , ( ) => {
63+ const result = client . getIntegerAssignment ( 'integer-flag' , 'test-subject-key' , { } , 0 ) ;
64+ expect ( result ) . toBe ( 42 ) ;
65+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
66+ } ) ;
67+
68+ it ( 'correctly evaluates numeric flag' , ( ) => {
69+ const result = client . getNumericAssignment ( 'numeric-flag' , 'test-subject-key' , { } , 0 ) ;
70+ expect ( result ) . toBe ( 3.14 ) ;
71+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
72+ } ) ;
73+
74+ it ( 'correctly evaluates JSON flag' , ( ) => {
75+ const result = client . getJSONAssignment ( 'json-flag' , 'test-subject-key' , { } , { } ) ;
76+ expect ( result ) . toEqual ( { key : 'value' , number : 123 } ) ;
77+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
78+ } ) ;
79+
80+ it ( 'correctly evaluates flag with extra logging' , ( ) => {
81+ const result = client . getStringAssignment ( 'string-flag-with-extra-logging' , 'test-subject-key' , { } , 'default' ) ;
82+ expect ( result ) . toBe ( 'red' ) ;
83+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
84+ } ) ;
85+
86+ it ( 'logs bandit evaluation for flag with bandit data' , ( ) => {
87+ const banditActions = {
88+ 'show_red_button' : {
89+ expectedConversion : 0.23 ,
90+ expectedRevenue : 15.75 ,
91+ category : 'promotion' ,
92+ placement : 'home_screen'
93+ }
94+ } ;
95+
96+ const result = client . getBanditAction ( 'string-flag' , 'test-subject-key' , { } , banditActions , 'default' ) ;
97+
98+ expect ( result . variation ) . toBe ( 'red' ) ;
99+ expect ( result . action ) . toBe ( 'show_red_button' ) ;
100+ expect ( mockBanditLogger . logBanditAction ) . toHaveBeenCalledTimes ( 1 ) ;
101+
102+ const call = mockBanditLogger . logBanditAction . mock . calls [ 0 ] [ 0 ] ;
103+ expect ( call . bandit ) . toBe ( 'recommendation-model-v1' ) ;
104+ expect ( call . action ) . toBe ( 'show_red_button' ) ;
105+ expect ( call . modelVersion ) . toBe ( 'v2.3.1' ) ;
106+ expect ( call . actionProbability ) . toBe ( 0.85 ) ;
107+ expect ( call . optimalityGap ) . toBe ( 0.12 ) ;
108+ } ) ;
109+
110+ it ( 'returns default values for nonexistent flags' , ( ) => {
111+ const stringResult = client . getStringAssignment ( 'nonexistent-flag' , 'test-subject-key' , { } , 'default-string' ) ;
112+ expect ( stringResult ) . toBe ( 'default-string' ) ;
113+
114+ const boolResult = client . getBooleanAssignment ( 'nonexistent-flag' , 'test-subject-key' , { } , true ) ;
115+ expect ( boolResult ) . toBe ( true ) ;
116+
117+ const intResult = client . getIntegerAssignment ( 'nonexistent-flag' , 'test-subject-key' , { } , 100 ) ;
118+ expect ( intResult ) . toBe ( 100 ) ;
119+ } ) ;
120+
121+ it ( 'correctly handles assignment details' , ( ) => {
122+ const details = client . getStringAssignmentDetails ( 'string-flag' , 'test-subject-key' , { } , 'default' ) ;
123+
124+ expect ( details . variation ) . toBe ( 'red' ) ;
125+ expect ( details . evaluationDetails . variationKey ) . toBe ( 'variation-123' ) ;
126+
127+ // Assignment should be logged
128+ expect ( mockAssignmentLogger . logAssignment ) . toHaveBeenCalledTimes ( 1 ) ;
129+ const call = mockAssignmentLogger . logAssignment . mock . calls [ 0 ] [ 0 ] ;
130+ expect ( call . allocation ) . toBe ( 'allocation-123' ) ;
131+ expect ( call . featureFlag ) . toBe ( 'string-flag' ) ;
132+ expect ( call . subject ) . toBe ( 'test-subject-key' ) ;
133+ } ) ;
134+ } ) ;
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