mirror of
https://github.com/JetSetIlly/Gopher2600.git
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61 lines
2.2 KiB
Go
61 lines
2.2 KiB
Go
// This file is part of Gopher2600.
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//
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// Gopher2600 is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Gopher2600 is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Gopher2600. If not, see <https://www.gnu.org/licenses/>.
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package test
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import "testing"
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// DemandEquility is used to test equality between one value and another. If the
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// test fails it is a testing fatility
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//
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// This is particular useful if the values being tested are used in further
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// tests and so must be correct. For example, testing that the lengths of two
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// slices are equal before iterating over them in unison
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func DemandEquality[T comparable](t *testing.T, v T, expectedValue T) {
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t.Helper()
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if v != expectedValue {
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t.Fatalf("equality test of type %T failed: '%v' does not equal '%v')", v, v, expectedValue)
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}
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}
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// DemandSucess is used to test for a value which indicates an 'successful'
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// value for the type. See ExpectSucess() for more information on success
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// values
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func DemandSuccess(t *testing.T, v any) {
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t.Helper()
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if !expectSuccess(t, v) {
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t.Fatalf("a success value is demanded for type %T", v)
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}
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}
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// DemandFailure is used to test for a value which indicates an 'unsuccessful'
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// value for the type. See ExpectFailure() for more information on failure
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// values
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func DemandFailure(t *testing.T, v any) {
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t.Helper()
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if !expectFailure(t, v) {
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t.Fatalf("a failure value is demanded for type %T", v)
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}
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}
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// DemandImplements tests whether an instance is an implementation of type T
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func DemandImplements[T comparable](t *testing.T, instance any, implements T) bool {
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t.Helper()
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if _, ok := instance.(T); !ok {
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t.Fatalf("implementation test of type %T failed: type %T does not implement %T", instance, instance, implements)
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return false
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}
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return true
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}
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