Claude
9825efa081
Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01JoVmf2fWvcpoXndcDSwRf7
19 lines
825 B
Plaintext
19 lines
825 B
Plaintext
# The same OrderService built with plain 'new', no Spring anywhere
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--- constructor injection ---
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new ConstructorOrderService(gateway, notifier).place("A-1", 500)
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OK -> charged 500 cents for A-1
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charges=1, notifications=1
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--- setter injection, one setter forgotten ---
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new SetterOrderService(); setter.setGateway(gateway); // setNotifier never called
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NullPointerException: Cannot invoke "com.ankurm.coredi.injection.Notifier.send(String)" because "this.notifier" is null
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charges=1 <-- the customer was charged before the failure
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--- field injection ---
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new FieldOrderService().place("A-3", 500)
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NullPointerException: Cannot invoke "com.ankurm.coredi.injection.PaymentGateway.charge(String, int)" because "this.gateway" is null
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after ReflectionTestUtils.setField(...) twice:
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OK -> charged 500 cents for A-3
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