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// Copyright 2016 The TensorFlow Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package op
import (
"fmt"
"testing"
tf "github.com/tensorflow/tensorflow/tensorflow/go"
)
func TestScopeSubScope(t *testing.T) {
var (
root = NewScope()
sub1 = root.SubScope("x")
sub2 = root.SubScope("x")
sub1a = sub1.SubScope("y")
sub2a = sub2.SubScope("y")
)
testdata := []struct {
scope *Scope
name string
}{
{root, "Const"},
{sub1, "x/Const"},
{sub1a, "x/y/Const"},
{sub2, "x_1/Const"},
{sub2a, "x_1/y/Const"},
}
for _, test := range testdata {
c := Const(test.scope, int64(1))
if err := test.scope.Err(); err != nil {
t.Fatalf("%q: %v", test.name, err)
}
if got := c.Op.Name(); got != test.name {
t.Errorf("%q: Got %q", test.name, got)
}
}
}
func TestScopeSubScopeErrors(t *testing.T) {
var (
root = NewScope()
sub = root.SubScope("x")
)
// Error on the root, even after sub has been created should be propagated.
// Force an error by creating a Const which has a type that does not
// translate to the TensorFlow type system.
Const(root, int(1))
if err := root.Err(); err == nil {
t.Fatal("Expected error")
}
if err := sub.Err(); err == nil {
t.Errorf("Root scope had error [%v], but sub-scope did not", root.Err())
}
}
func TestScopeFinalize(t *testing.T) {
var (
root = NewScope()
sub1 = root.SubScope("x")
sub2 = sub1.SubScope("y")
)
if _, err := sub1.Finalize(); err != nil {
t.Fatal(err)
}
if err := root.Err(); err == nil {
t.Error("Root scope's Err() should be non-nil once Finalize has been called")
}
if err := sub2.Err(); err == nil {
t.Error("Sub scope's Err() should be non-nil once Finalize has been called")
}
}
func TestMultipleGeneratedOps(t *testing.T) {
s := NewScope()
Placeholder(s.SubScope("x"), tf.Float)
Placeholder(s.SubScope("y"), tf.Float)
if _, err := s.Finalize(); err != nil {
t.Fatal(err)
}
}
func Example() {
// This example creates a Graph that multiplies a constant matrix with
// a matrix to be provided during graph execution (via
// tensorflow.Session).
s := NewScope()
input := Placeholder(s, tf.Float) // Matrix to be provided to Session.Run
output := MatMul(s,
Const(s, [][]float32{{10}, {20}}), // Constant 2x1 matrix
input,
MatMulTransposeB(true))
if s.Err() != nil {
panic(s.Err())
}
// Shape of the product: The number of rows is fixed by m1, but the
// number of columns will depend on m2, which is unknown.
fmt.Println(output.Shape())
// Output: [2, ?]
}
func ExampleScope_SubScope() {
var (
s = NewScope()
c1 = Const(s.SubScope("x"), int64(1))
c2 = Const(s.SubScope("x"), int64(1))
)
if s.Err() != nil {
panic(s.Err())
}
fmt.Println(c1.Op.Name(), c2.Op.Name())
// Output: x/Const x_1/Const
}
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