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first() does not print expected for empty lists #287

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robd opened this issue Mar 21, 2023 · 0 comments

Contributor

robd commented Mar 21, 2023

  @Test
  fun `first() handles empty lists`() {
    val subject = emptyList<String>()
    expectThat(subject).first().isEqualTo("catflap")
  }

Fails with the message:

Mapping 'first element %s' failed with: List is empty.
Mapping 'first element %s' failed with: List is empty.
	at app//strikt.internal.AssertionBuilder.get(AssertionBuilder.kt:108)

Wonder if it is possible to show the expected - it can be hard to know which assertion failed if there is more than one 'first()' in a test.

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