135 lines
2.4 KiB
Nim
135 lines
2.4 KiB
Nim
import
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unittest, typetraits,
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../stew/objects
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when defined(nimHasUsed):
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{.used.}
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{.experimental: "notnil".}
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suite "Objects":
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test "baseType":
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type
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Foo = ref object of RootObj
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Bar = ref object of Foo
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Baz = object of RootObj
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Bob = object of Baz
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Bill = ref object of Bob
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var
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foo = Foo()
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bar = Bar()
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baz = Baz()
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bob = Bob()
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bill = Bill()
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when defined(nimTypeNames):
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check:
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foo.baseType == "Foo:ObjectType"
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bar.baseType == "Bar:ObjectType"
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baz.baseType == "Baz"
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bob.baseType == "Bob"
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bill.baseType == "Bill:ObjectType"
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proc f(o: Foo) =
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check $o.type == "Foo"
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check o.baseType == "Bar:ObjectType"
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f(bar)
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test "declval":
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type
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Bar = object
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x: RootRef not nil
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DistinctBar = distinct Bar
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proc foo(x: int): string =
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discard
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proc foo(x: var int): float =
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discard
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proc foo(x: Bar): int =
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discard
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type
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T1 = typeof foo(declval(int))
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T2 = typeof foo(declval(var int))
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T3 = typeof foo(declval(lent int))
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T4 = typeof foo(declval(Bar))
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T5 = typeof foo(declval(var Bar))
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T6 = typeof declval(DistinctBar)
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check:
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T1 is string
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T2 is float
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T3 is string
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T4 is int
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T5 is int
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T6 is DistinctBar
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T6 isnot Bar
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when false:
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# TODO: Not possible yet (see objects.nim)
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test "hasHoles":
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type
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WithoutHoles = enum
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A1, B1, C1
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WithoutHoles2 = enum
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A2 = 2, B2 = 3, C2 = 4
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WithHoles = enum
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A3, B3 = 2, C3
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check:
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hasHoles(WithoutHoles2) == false
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hasHoles(WithoutHoles) == false
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hasHoles(WithHoles) == true
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test "checkedEnumAssign":
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type
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SomeEnum = enum
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A1, B1, C1
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AnotherEnum = enum
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A2 = 2, B2, C2
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var
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e1 = A1
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e2 = A2
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check:
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checkedEnumAssign(e1, 2)
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e1 == C1
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check:
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not checkedEnumAssign(e1, 5)
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e1 == C1
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check:
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checkedEnumAssign(e1, 0)
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e1 == A1
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check:
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not checkedEnumAssign(e1, -1)
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e1 == A1
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check:
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checkedEnumAssign(e2, 2)
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e2 == A2
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check:
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not checkedEnumAssign(e2, 5)
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e2 == A2
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check:
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checkedEnumAssign(e2, 4)
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e2 == C2
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check:
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not checkedEnumAssign(e2, 1)
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e2 == C2
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