unittest: Add fileio_test

Signed-off-by: Stefan Weil <sw@weilnetz.de>

unittest/Makefile.am

@@ -47,7 +47,10 @@ libabseil_la_SOURCES += ../abseil/absl/base/internal/throw_delegate.cc
 libabseil_la_SOURCES += ../abseil/absl/base/internal/unscaledcycleclock.cc
 libabseil_la_SOURCES += ../abseil/absl/numeric/int128.cc
 libabseil_la_SOURCES += ../abseil/absl/strings/ascii.cc
+libabseil_la_SOURCES += ../abseil/absl/strings/internal/memutil.cc
 libabseil_la_SOURCES += ../abseil/absl/strings/str_cat.cc
+libabseil_la_SOURCES += ../abseil/absl/strings/str_split.cc
+libabseil_la_SOURCES += ../abseil/absl/strings/string_view.cc
 libabseil_la_SOURCES += ../abseil/absl/time/clock.cc
 libabseil_la_SOURCES += ../abseil/absl/time/duration.cc
 
@@ -82,6 +85,7 @@ check_PROGRAMS = \
   cleanapi_test \
   colpartition_test \
   denorm_test \
+  fileio_test \
   heap_test \
   indexmapbidi_test \
   intfeaturemap_test \
@@ -138,6 +142,9 @@ commandlineflags_test_LDADD = $(GTEST_LIBS) $(TRAINING_LIBS) $(TESS_LIBS)
 denorm_test_SOURCES = denorm_test.cc
 denorm_test_LDADD = $(GTEST_LIBS) $(TESS_LIBS)
 
+fileio_test_SOURCES = fileio_test.cc
+fileio_test_LDADD = $(ABSEIL_LIBS) $(GTEST_LIBS) $(TESS_LIBS)
+
 heap_test_SOURCES = heap_test.cc
 heap_test_LDADD = $(GTEST_LIBS) $(TESS_LIBS)
 

unittest/fileio_test.cc

@@ -1,8 +1,23 @@
-#include "tesseract/training/fileio.h"
+// (C) Copyright 2017, Google Inc.
+// 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.
+
 
 #include <stdio.h>
 #include <memory>
 
+#include "absl/strings/str_split.h"
+
+#include "fileio.h"
+#include "include_gunit.h"
+
 namespace {
 
 using tesseract::File;
@@ -38,10 +53,10 @@ TEST(InputBufferTest, Read) {
   FILE* fp = fmemopen(buffer, kMaxBufSize, "r");
   CHECK(fp != nullptr);
 
-  string str;
+  std::string str;
   std::unique_ptr<InputBuffer> input(new InputBuffer(fp));
   EXPECT_TRUE(input->Read(&str));
-  std::vector<string> lines = absl::StrSplit(str, '\n', absl::SkipEmpty());
+  std::vector<std::string> lines = absl::StrSplit(str, '\n', absl::SkipEmpty());
   EXPECT_EQ(2, lines.size());
   EXPECT_EQ("Hello", lines[0]);
   EXPECT_EQ(" world!", lines[1]);