spring-boot-test/org.springframework.boot.test.system/OutputCaptureRule

OutputCaptureRule

open class OutputCaptureRule : TestRule, CapturedOutput

JUnit @Rule to capture output from System.out and System.err.

To use add as a @Rule:

public class MyTest {

    @Rule
    public OutputCaptureRule output = new OutputCaptureRule();

    @Test
    public void test() {
        assertThat(output).contains("ok");
    }

}

Author

Phillip Webb

Andy Wilkinson

Since

2.2.0

Constructors

OutputCaptureRule

constructor()

Functions

apply

open fun apply(base: Statement, description: Description): Statement

charAt

abstract fun charAt(p: Int): Char

open fun charAt(index: Int): Char

chars

open fun chars(): IntStream

codePoints

open fun codePoints(): IntStream

compare

open fun compare(cs1: CharSequence, cs2: CharSequence): Int

expect

open fun expect(matcher: Matcher<in String>)

Verify that the output is matched by the supplied matcher.

getAll

open fun getAll(): String

Return all content (both System.out and System.err) in the order that it was captured.

getErr

open fun getErr(): String

Return System.err content in the order that it was captured.

getOut

open fun getOut(): String

Return System.out content in the order that it was captured.

isEmpty

open fun isEmpty(): Boolean

length

abstract fun length(): Int

open fun length(): Int

subSequence

abstract fun subSequence(p: Int, p1: Int): CharSequence

open fun subSequence(start: Int, end: Int): CharSequence

toString

open fun toString(): String