assert: add Panics, PanicsWith

I want to use this for test coverage in microprom.

This turned out to be a bigger change than expected because testcapture
has a dependency on assert, which I had to invert to be able to use
testcapture.Capture() in assert.

1 files changed, 4 insertions, 33 deletions

diff --git a/assert/assert.go b/assert/assert.go
index a13c15e..fe725f6 100644
--- a/assert/assert.go
+++ b/assert/assert.go
@@ -5,38 +5,9 @@
 // Each assertion in this package returns a bool to indicate whether the check succeeded, and logs a t.Error() when the check does not succeed.
 package assert
 
-import (
-	"context"
-	"io"
-	"testing"
-)
+import "go.xyrillian.de/gg/testcapture"
 
 // TestingTB contains all the public functions of [testing.TB] (as of Go 1.26).
-// Functions in this package use this type instead of [testing.TB] because the capture device used by package testcapture cannot implement [testing.TB]: It contains methods that are private to the standard library.
-type TestingTB interface {
-	ArtifactDir() string
-	Attr(key, value string)
-	Chdir(dir string)
-	Cleanup(func())
-	Context() context.Context
-	Error(args ...any)
-	Errorf(format string, args ...any)
-	Fail()
-	Failed() bool
-	FailNow()
-	Fatal(args ...any)
-	Fatalf(format string, args ...any)
-	Helper()
-	Log(args ...any)
-	Logf(format string, args ...any)
-	Name() string
-	Output() io.Writer
-	Setenv(key, value string)
-	Skip(args ...any)
-	Skipf(format string, args ...any)
-	SkipNow()
-	Skipped() bool
-	TempDir() string
-}
-
-var _ TestingTB = testing.TB(nil)
+// Functions in this package use this type instead of [testing.TB] to allow
+// mocks of [testing.TB] to be substituted in tests for this package.
+type TestingTB = testcapture.TestingTB