jrmccluskey commented on a change in pull request #15175:
URL: https://github.com/apache/beam/pull/15175#discussion_r671383900



##########
File path: sdks/go/pkg/beam/testing/passert/floats.go
##########
@@ -70,3 +122,13 @@ func (f *boundsFn) ProcessElement(_ []byte, col 
func(*beam.T) bool) error {
        }
        return errors.New(strings.Join(errorStrings, "\n"))
 }
+
+func toFloat(input beam.T) float64 {
+       return 
reflect.ValueOf(input.(interface{})).Convert(reflectx.Float64).Interface().(float64)
+}
+
+func validateNonComplexNumber(t reflect.Type) {
+       if !reflectx.IsNumber(t) || reflectx.IsComplex(t) {
+               panic(fmt.Sprintf("type must be a non-complex number: %v", t))

Review comment:
       Changed 

##########
File path: sdks/go/pkg/beam/testing/passert/floats.go
##########
@@ -26,6 +26,56 @@ import (
        "github.com/apache/beam/sdks/go/pkg/beam/internal/errors"
 )
 
+// EqualsFloat checks that two PCollections of floats are equal, with each 
element
+// being within a specified threshold of its corresponding element. Both 
PCollections
+// are loaded into memory, sorted, and compared element by element.
+func EqualsFloat(s beam.Scope, observed, expected beam.PCollection, threshold 
float64) {

Review comment:
       Done and unit tested




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