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Test that you can’t move left from the leftmost child of a branch.

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This commit is contained in:
Rob Rix 2015-11-05 11:15:22 -05:00
parent 1444acf2a2
commit 3d0a53a6b4
1 changed files with 4 additions and 0 deletions
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4
prototype/DoubtTests/LocationTests.swift
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@ -23,6 +23,10 @@ final class LocationTests: XCTestCase {
func testCanMoveBackUpwards() {
assert(term.explore().down?.up?.it, ==, term)
}
func testCannotMoveLeftwardsFromFirstChildOfBranch() {
assert(term.explore().down?.left?.it, ==, nil)
}
}