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Rule Request: Prefer specific matcher over `XCTAssertEqual`/`XCTAssertNotEqual` #1874

marcelofabri opened this Issue Oct 2, 2017 · 0 comments


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marcelofabri commented Oct 2, 2017

New Issue Checklist

Rule Request

  1. Why should this rule be added? Share links to existing discussion about what
    the community thinks about this.

XCTAssertFalse, XCTAssertTrue,XCTAssertNil, XCTAssertNotNil should be used over XCTAssertEqual/XCTAssertNotEqual.

  1. Provide several examples of what would and wouldn't trigger violations.
// triggers
XCTAssertEqual(foo, true)
XCTAssertEqual(foo, false)
XCTAssertNotEqual(foo, false)
XCTAssertEqual(foo, nil)
XCTAssertNotEqual(foo, nil)

// doesn't trigger
XCTAssertEqual(foo, 2)
XCTAssertNotEqual(foo, "false")
  1. Should the rule be configurable, if so what parameters should be configurable?

Just severity.

  1. Should the rule be opt-in or enabled by default? Why?
    See for guidelines on when to mark a rule as opt-in.

Probably as a default rule, even though there's a risk of false positives.

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