assert: make *AssertionFunc type just aliases

We don't need to define "hard" types for *AssertionFunc types as we
don't attach methods to them. Also, making them just type aliases will
give more flexibility to users of our API.
So ComparisonAssertionFunc and other *AssertionFunc types are now just
type aliases.

assert/assertions.go

@@ -31,19 +31,19 @@ type TestingT interface {
 
 // ComparisonAssertionFunc is a common function prototype when comparing two values.  Can be useful
 // for table driven tests.
-type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{}) bool
+type ComparisonAssertionFunc = func(TestingT, interface{}, interface{}, ...interface{}) bool
 
 // ValueAssertionFunc is a common function prototype when validating a single value.  Can be useful
 // for table driven tests.
-type ValueAssertionFunc func(TestingT, interface{}, ...interface{}) bool
+type ValueAssertionFunc = func(TestingT, interface{}, ...interface{}) bool
 
 // BoolAssertionFunc is a common function prototype when validating a bool value.  Can be useful
 // for table driven tests.
-type BoolAssertionFunc func(TestingT, bool, ...interface{}) bool
+type BoolAssertionFunc = func(TestingT, bool, ...interface{}) bool
 
 // ErrorAssertionFunc is a common function prototype when validating an error value.  Can be useful
 // for table driven tests.
-type ErrorAssertionFunc func(TestingT, error, ...interface{}) bool
+type ErrorAssertionFunc = func(TestingT, error, ...interface{}) bool
 
 // Comparison is a custom function that returns true on success and false on failure
 type Comparison func() (success bool)

require/requirements.go

@@ -12,18 +12,18 @@ type tHelper interface {
 
 // ComparisonAssertionFunc is a common function prototype when comparing two values.  Can be useful
 // for table driven tests.
-type ComparisonAssertionFunc func(TestingT, interface{}, interface{}, ...interface{})
+type ComparisonAssertionFunc = func(TestingT, interface{}, interface{}, ...interface{})
 
 // ValueAssertionFunc is a common function prototype when validating a single value.  Can be useful
 // for table driven tests.
-type ValueAssertionFunc func(TestingT, interface{}, ...interface{})
+type ValueAssertionFunc = func(TestingT, interface{}, ...interface{})
 
 // BoolAssertionFunc is a common function prototype when validating a bool value.  Can be useful
 // for table driven tests.
-type BoolAssertionFunc func(TestingT, bool, ...interface{})
+type BoolAssertionFunc = func(TestingT, bool, ...interface{})
 
 // ErrorAssertionFunc is a common function prototype when validating an error value.  Can be useful
 // for table driven tests.
-type ErrorAssertionFunc func(TestingT, error, ...interface{})
+type ErrorAssertionFunc = func(TestingT, error, ...interface{})
 
 //go:generate sh -c "cd ../_codegen && go build && cd - && ../_codegen/_codegen -output-package=require -template=require.go.tmpl -include-format-funcs"