1 // Copyright 2023 The Pigweed Authors
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not
4 // use this file except in compliance with the License. You may obtain a copy of
5 // the License at
6 //
7 // https://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
12 // License for the specific language governing permissions and limitations under
13 // the License.
14
15 #include "pw_stream/null_stream.h"
16
17 #include <cstddef>
18
19 #include "pw_unit_test/framework.h"
20
21 namespace pw::stream {
22 namespace {
23
TEST(NullStream,DefaultConservativeWriteLimit)24 TEST(NullStream, DefaultConservativeWriteLimit) {
25 NullStream stream;
26 EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
27 }
28
TEST(NullStream,DefaultConservativeReadLimit)29 TEST(NullStream, DefaultConservativeReadLimit) {
30 NullStream stream;
31 EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
32 }
33
TEST(NullStream,DefaultConservativeReadWriteLimit)34 TEST(NullStream, DefaultConservativeReadWriteLimit) {
35 NullStream stream;
36 EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
37 EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
38 }
39
TEST(NullStream,DefaultTell)40 TEST(NullStream, DefaultTell) {
41 NullStream stream;
42 EXPECT_EQ(stream.Tell(), Stream::kUnknownPosition);
43 }
44
TEST(CountingNullStream,DefaultConservativeWriteLimit)45 TEST(CountingNullStream, DefaultConservativeWriteLimit) {
46 CountingNullStream stream;
47 EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
48 }
49
TEST(CountingNullStream,DefaultConservativeReadLimit)50 TEST(CountingNullStream, DefaultConservativeReadLimit) {
51 CountingNullStream stream;
52 EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
53 }
54
TEST(CountingNullStream,DefaultConservativeReadWriteLimit)55 TEST(CountingNullStream, DefaultConservativeReadWriteLimit) {
56 CountingNullStream stream;
57 EXPECT_EQ(stream.ConservativeWriteLimit(), Stream::kUnlimited);
58 EXPECT_EQ(stream.ConservativeReadLimit(), Stream::kUnlimited);
59 }
60
TEST(CountingNullStream,DefaultTell)61 TEST(CountingNullStream, DefaultTell) {
62 CountingNullStream stream;
63 EXPECT_EQ(stream.Tell(), Stream::kUnknownPosition);
64 }
65
66 std::byte data[32];
67
TEST(CountingNullStream,CountsWrites)68 TEST(CountingNullStream, CountsWrites) {
69 CountingNullStream stream;
70 EXPECT_EQ(OkStatus(), stream.Write(data));
71 EXPECT_EQ(sizeof(data), stream.bytes_written());
72
73 EXPECT_EQ(OkStatus(), stream.Write(span(data).first(1)));
74 EXPECT_EQ(sizeof(data) + 1, stream.bytes_written());
75
76 EXPECT_EQ(OkStatus(), stream.Write(span<std::byte>()));
77 EXPECT_EQ(sizeof(data) + 1, stream.bytes_written());
78
79 EXPECT_EQ(OkStatus(), stream.Write(data));
80 EXPECT_EQ(2 * sizeof(data) + 1, stream.bytes_written());
81 }
82
83 } // namespace
84 } // namespace pw::stream
85