/* Copyright 2016 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#include "tensorflow/core/public/version.h"
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#include <string>
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#include "tensorflow/core/lib/core/stringpiece.h"
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#include "tensorflow/core/lib/strings/str_util.h"
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#include "tensorflow/core/platform/test.h"
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namespace tensorflow {
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namespace {
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bool IsDotOrIdentifierChar(char c) {
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if (c == '.') return true;
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if (c == '-') return true;
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if (c >= 'A' && c <= 'Z') return true;
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if (c >= 'a' && c <= 'z') return true;
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if (c >= '0' && c <= '9') return true;
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return false;
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}
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bool ConsumeDotSeparatedIdentifiers(StringPiece* s, const string& prefix,
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StringPiece* val) {
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if (!str_util::ConsumePrefix(s, prefix)) return false;
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size_t i;
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for (i = 0; i < s->size() && IsDotOrIdentifierChar((*s)[i]); ++i) {
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// Intentionally empty
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}
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*val = StringPiece(s->data(), i);
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s->remove_prefix(i);
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return i > 0;
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}
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// Test that TF_VERSION_STRING follows semantic versioning.
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TEST(SemverTest, VersionStringFollowsSemver) {
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// Poor approximation of the semver 2.0 specification at www.semver.org. Feel
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// free to refine further (for example, check for leading 0s in numbers), but
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// avoid adding dependencies.
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uint64 major, minor, patch;
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StringPiece prerelease, metadata;
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StringPiece semver(TF_VERSION_STRING);
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ASSERT_TRUE(str_util::ConsumeLeadingDigits(&semver, &major));
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ASSERT_TRUE(str_util::ConsumePrefix(&semver, "."));
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ASSERT_TRUE(str_util::ConsumeLeadingDigits(&semver, &minor));
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ASSERT_TRUE(str_util::ConsumePrefix(&semver, "."));
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// Till 0.11.0rc2, the prerelease version was (incorrectly) not separated from
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// the patch version number. Let that slide.
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// Remove this when TF_VERSION_STRING moves beyond 0.11.0rc2.
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if (major == 0 && minor <= 11) {
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return;
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}
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if (str_util::ConsumePrefix(&semver, "head")) {
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ASSERT_TRUE(semver.empty());
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return;
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}
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ASSERT_TRUE(str_util::ConsumeLeadingDigits(&semver, &patch));
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if (semver.empty()) return;
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if (semver[0] == '-') {
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ASSERT_TRUE(ConsumeDotSeparatedIdentifiers(&semver, "-", &prerelease));
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}
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if (semver.empty()) return;
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if (semver[0] == '+') {
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ASSERT_TRUE(ConsumeDotSeparatedIdentifiers(&semver, "+", &metadata));
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}
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ASSERT_TRUE(semver.empty());
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}
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} // namespace
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} // namespace tensorflow
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