Add Raise[f] helpers.

assert.go

@@ -6,21 +6,31 @@ import (
 	"strings"
 )
 
+// Raise panics with Error.
+func Raise(text string) {
+	panic(Error{Text: text})
+}
+
+// Raisef panics with Error.
+func Raisef(format string, v ...interface{}) {
+	text := fmt.Sprintf(format, v...)
+	panic(Error{Text: text})
+}
+
 // Assert panics with Error if cond is false.
 func Assert(cond bool, text string) {
 	if cond {
 		return
 	}
-	panic(Error{Text: text})
+	Raise(text)
 }
 
 // Assertf panics with Error if cond is false.
 func Assertf(cond bool, format string, v ...interface{}) {
 	if cond {
 		return
 	}
-	text := fmt.Sprintf(format, v...)
-	panic(Error{Text: text})
+	Raisef(format, v...)
 }
 
 // NotNil takes a pointer to a nil-able type (pointer, interface, etc) and
@@ -31,8 +41,7 @@ func NotNil(v interface{}) {
 	if !r1.IsNil() {
 		return
 	}
-	text := fmt.Sprintf("%s is nil", r1.Type().String())
-	panic(Error{Text: text})
+	Raisef("%s is nil", r1.Type().String())
 }
 
 // Error is the error type for Assert failure panics.