Which statement about @TestPropertySource annotation is true? (Choose the best answer.)

Question

Options

• AJava system properties have higher precedence than the properties loaded from
• BProperties defined @PropertySource are not loaded if @TestPropertySource is used.
• C@TestPropertySource annotation loads a properties file relative to the root of the project by
• DInlined properties defined in @TestPropertySource can be used to override properties defined

• A
  8% (4)
• B
  4% (2)
• C
  2% (1)
• D
  85% (41)

Explanation

Option D is correct because @TestPropertySource is specifically designed to allow test-specific property overrides. Inlined properties (defined via the properties attribute, e.g., @TestPropertySource(properties = "foo=bar")) have the highest precedence among all property sources in the test Environment, meaning they can override properties from files, @PropertySource, and even application configuration.

Why the distractors are wrong:

• A is incorrect - @TestPropertySource properties have higher precedence than Java system properties, not lower. System properties sit below test property sources in the hierarchy.
• B is incorrect - @PropertySource definitions are still loaded when @TestPropertySource is used; they simply have lower precedence, not suppressed entirely.
• C is incorrect - @TestPropertySource resolves property file locations relative to the classpath (defaulting to the package of the declaring test class), not the root of the project filesystem.

Memory tip: Think of @TestPropertySource inlined properties as the "last word" in your test environment - they sit at the top of the property source chain specifically so tests can reliably override any external configuration without fighting system-level settings.

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