test: add target value casting test (#652)

Signed-off-by: Michael Beemer <[email protected]>

libs/shared/flagd-core/src/lib/flagd-core.spec.ts

@@ -109,6 +109,24 @@ describe('flagd-core targeting evaluations', () => {
     expect(resolved.reason).toBe(StandardResolutionReasons.TARGETING_MATCH);
     expect(resolved.variant).toBe('true');
   });
+
+  it('should match the variant "true" by casting the boolean response from the targeting evaluation', () => {
+    const caseVariantValueFlag =
+      '{"flags":{"new-welcome-banner":{"state":"ENABLED","variants":{"true":true,"false":false},"defaultVariant":"false","targeting":{"in":["@example.com",{"var":"email"}]}}}}';
+
+    const core = new FlagdCore();
+    core.setConfigurations(caseVariantValueFlag);
+
+    const evaluation = core.resolveBooleanEvaluation(
+      'new-welcome-banner',
+      false,
+      { email: '[email protected]' },
+      console,
+    );
+    expect(evaluation.value).toBe(true);
+    expect(evaluation.variant).toBe('true');
+    expect(evaluation.reason).toBe(StandardResolutionReasons.TARGETING_MATCH);
+  });
 });
 
 describe('flagd-core validations', () => {