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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| // Copyright 2022 Gregory Petrosyan <gregory.petrosyan@gmail.com> | ||
| // | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
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| package rapid | ||
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| import ( | ||
| "reflect" | ||
| ) | ||
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| // https://stackoverflow.com/questions/73864711/get-type-parameter-from-a-generic-struct-using-reflection | ||
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| // MakeVariant creates a generator of values of type V, using reflection to infer the required structure. | ||
| func MakeVariant[V any](overrides ...*Generator[any]) *Generator[V] { | ||
| var zero V | ||
| gen := newMakeGen(reflect.TypeOf(zero), overrides) | ||
| return newGenerator[V](&makeGen[V]{ | ||
| gen: gen, | ||
| }) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| // Copyright 2022 Gregory Petrosyan <gregory.petrosyan@gmail.com> | ||
| // | ||
| // This Source Code Form is subject to the terms of the Mozilla Public | ||
| // License, v. 2.0. If a copy of the MPL was not distributed with this | ||
| // file, You can obtain one at https://mozilla.org/MPL/2.0/. | ||
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| package rapid_test | ||
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| import ( | ||
| "fmt" | ||
| "testing" | ||
| "time" | ||
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| "pgregory.net/rapid" | ||
| ) | ||
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| type S struct { | ||
| F1 string | ||
| Int int | ||
| T time.Time | ||
| TPtr *time.Time | ||
| } | ||
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| func (s S) String() string { | ||
| return fmt.Sprintf("%s, %d, %s", s.F1, s.Int, s.T.String()) | ||
| } | ||
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| func Test(t *testing.T) { | ||
| now := time.Now() | ||
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| strGen := rapid.Just("Hello") | ||
| intGen := rapid.IntRange(0, 100) | ||
| timeGen := rapid.Just(now) | ||
| sGen := rapid.MakeVariant[S](strGen.AsAny(), intGen.AsAny(), timeGen.AsAny()) | ||
| s := sGen.Example(1) | ||
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| if s.F1 != "Hello" { | ||
| t.Errorf("Unexpected string value") | ||
| } | ||
| if s.Int > 100 || s.Int < 0 { | ||
| t.Errorf("Unexpected int value") | ||
| } | ||
| if !s.T.Equal(now) { | ||
| t.Errorf("Unexpected time.Time value") | ||
| } | ||
| if s.TPtr != nil && !s.TPtr.Equal(now) { | ||
| t.Errorf("Unexpected time.Time ptr value") | ||
| } | ||
| fmt.Println(s.String()) | ||
| } |