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4 changes: 4 additions & 0 deletions assert/assertions.go
Original file line number Diff line number Diff line change
Expand Up @@ -45,6 +45,10 @@ type BoolAssertionFunc func(TestingT, bool, ...interface{}) bool
// for table driven tests.
type ErrorAssertionFunc func(TestingT, error, ...interface{}) bool

// PanicAssertionFunc is a common function prototype when validating a panic value. Can be useful
// for table driven tests.
type PanicAssertionFunc = func(t TestingT, f PanicTestFunc, msgAndArgs ...interface{}) bool

// Comparison is a custom function that returns true on success and false on failure
type Comparison func() (success bool)

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36 changes: 36 additions & 0 deletions assert/assertions_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -2789,6 +2789,42 @@ func TestErrorAssertionFunc(t *testing.T) {
}
}

func ExamplePanicAssertionFunc() {
t := &testing.T{} // provided by test

tests := []struct {
name string
panicFn PanicTestFunc
assertion PanicAssertionFunc
}{
{"with panic", func() { panic(nil) }, Panics},
{"without panic", func() {}, NotPanics},
}

for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.assertion(t, tt.panicFn)
})
}
}

func TestPanicAssertionFunc(t *testing.T) {
tests := []struct {
name string
panicFn PanicTestFunc
assertion PanicAssertionFunc
}{
{"not panic", func() {}, NotPanics},
{"panic", func() { panic(nil) }, Panics},
}

for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.assertion(t, tt.panicFn)
})
}
}

func TestEventuallyFalse(t *testing.T) {
mockT := new(testing.T)

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