{"action":"created","comment":{"url":"https://api.github.com/repos/firebase/firebase-ios-sdk/pulls/comments/189137156","pull_request_review_id":121259132,"id":189137156,"diff_hunk":"@@ -0,0 +1,85 @@\n+/*\n+ * Copyright 2018 Google\n+ *\n+ * Licensed under the Apache License, Version 2.0 (the \"License\");\n+ * you may not use this file except in compliance with the License.\n+ * You may obtain a copy of the License at\n+ *\n+ *      http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS,\n+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+ * See the License for the specific language governing permissions and\n+ * limitations under the License.\n+ */\n+\n+#include \"Firestore/core/src/firebase/firestore/util/string_format.h\"\n+\n+#include \"gtest/gtest.h\"\n+\n+namespace firebase {\n+namespace firestore {\n+namespace util {\n+\n+TEST(StringFormatTest, Empty) {\n+  EXPECT_EQ(\"\", StringFormat(\"\"));\n+  EXPECT_EQ(\"\", StringFormat(\"%s\", std::string().c_str()));\n+  EXPECT_EQ(\"\", StringFormat(\"%s\", \"\"));\n+}\n+\n+TEST(StringFormatTest, String) {\n+  std::string value = StringFormat(\"Hello %s\", \"World\");\n+  EXPECT_EQ(\"Hello World\", value);\n+}\n+\n+TEST(StringFormatTest, Int) {\n+  std::string value = StringFormat(\"Hello %s\", 123);\n+  EXPECT_EQ(\"Hello 123\", value);\n+}\n+\n+TEST(StringFormatTest, Float) {\n+  std::string value = StringFormat(\"Hello %s\", 1.5);\n+  EXPECT_EQ(\"Hello 1.5\", value);\n+}\n+\n+TEST(StringFormatTest, Bool) {\n+  EXPECT_EQ(\"Hello true\", StringFormat(\"Hello %s\", true));\n+  EXPECT_EQ(\"Hello false\", StringFormat(\"Hello %s\", false));\n+}\n+\n+TEST(StringFormatTest, Pointer) {\n+  // pointers implicitly convert to bool. Make sure this doesn't happen in","path":"Firestore/core/test/firebase/firestore/util/string_format_test.cc","position":52,"original_position":52,"commit_id":"1aeab2999bbc8fd4419a3185963ba62f0c5643e8","original_commit_id":"f2e8c45fcb4e9a7692bb034c1da461846339c642","user":{"login":"wilhuff","id":10249104,"avatar_url":"https://avatars1.githubusercontent.com/u/10249104?v=4","gravatar_id":"","url":"https://api.github.com/users/wilhuff","html_url":"https://github.com/wilhuff","followers_url":"https://api.github.com/users/wilhuff/followers","following_url":"https://api.github.com/users/wilhuff/following{/other_user}","gists_url":"https://api.github.com/users/wilhuff/gists{/gist_id}","starred_url":"https://api.github.com/users/wilhuff/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wilhuff/subscriptions","organizations_url":"https://api.github.com/users/wilhuff/orgs","repos_url":"https://api.github.com/users/wilhuff/repos","events_url":"https://api.github.com/users/wilhuff/events{/privacy}","received_events_url":"https://api.github.com/users/wilhuff/received_events","type":"User","site_admin":false},"body":"Done.","created_at":"2018-05-18T00:29:13Z","updated_at":"2018-05-18T00:29:13Z","html_url":"https://github.com/firebase/firebase-ios-sdk/pull/1289#discussion_r189137156","pull_request_url":"https://api.github.com/repos/firebase/firebase-ios-sdk/pulls/1289","author_association":"MEMBER","_links":{"self":{"href":"https://api.github.com/repos/firebase/firebase-ios-sdk/pulls/comments/189137156"},"html":{"href":"https://github.com/firebase/firebase-ios-sdk/pull/1289#discussion_r189137156"},"pull_request":{"href":"https://api.github.com/repos/firebase/firebase-ios-sdk/pulls/1289"}},"in_reply_to_id":189047788},"pull_request":{"url":"https://api.github.com/repos/firebase/firebase-ios-sdk/pulls/1289","id":188813374,"html_url":"https://github.com/firebase/firebase-ios-sdk/pull/1289","diff_url":"https://github.com/firebase/firebase-ios-sdk/pull/1289.diff","patch_url":"https://github.com/firebase/firebase-ios-sdk/pull/1289.patch","issue_url":"https://api.github.com/repos/firebase/firebase-ios-sdk/issues/1289","number":1289,"state":"open","locked":false,"title":"Add a C++ native StringFormat","user":{"login":"wilhuff","id":10249104,"avatar_url":"https://avatars1.githubusercontent.com/u/10249104?v=4","gravatar_id":"","url":"https://api.github.com/users/wilhuff","html_url":"https://github.com/wilhuff","followers_url":"https://api.github.com/users/wilhuff/followers","following_url":"https://api.github.com/users/wilhuff/following{/other_user}","gists_url":"https://api.github.com/users/wilhuff/gists{/gist_id}","starred_url":"https://api.github.com/users/wilhuff/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/wilhuff/subscriptions","organizations_url":"https://api.github.com/users/wilhuff/orgs","repos_url":"https://api.github.com/users/wilhuff/repos","events_url":"https://api.github.com/users/wilhuff/events{/privacy}","received_events_url":"https://api.github.com/users/wilhuff/received_events","type":"User","site_admin":false},"body":"The new StringFormat takes a simple format string but uses C++ varargs to avoid all the `.c_str()` values and `\"%\" PRId64` format specifiers.\r\n\r\nThis is a preparatory step for implementing `HARD_ASSERT` to match the other Firestore ports.\r\n\r\nThis does not use ostream-style formatters in the way that `CHECK` and `DCHECK` do within google3; rather there's still a vastly simplified format string. 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