UnitTest: Cleanup

Improve naming and introduce googletest.h.

Change-Id: I445c13db4c23d6dd5682ce0db3b83055cc6b8a89
Reviewed-by: Tim Jenssen <tim.jenssen@qt.io>

tests/unit/unittest/lineprefixer-test.cpp

@@ -0,0 +1,135 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of Qt Creator.
+**
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+****************************************************************************/
+
+#include "googletest.h"
+
+#include <lineprefixer.h>
+#include <utf8string.h>
+
+namespace {
+
+QByteArray runPrefixer(QList<QByteArray> inputChunks);
+
+TEST(LinePrefixer, OneChunkEndsWithNewline)
+{
+    const QList<QByteArray> inputChunks = {"hello\n"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX hello\n");
+}
+
+TEST(LinePrefixer, OneChunkEndsWithoutNewline)
+{
+    const QList<QByteArray> inputChunks = {"hello"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX hello");
+}
+
+TEST(LinePrefixer, OneChunkStartsWithNewline)
+{
+    const QList<QByteArray> inputChunks = {"\nhello"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX \n"
+                      "PREFIX hello");
+}
+
+TEST(LinePrefixer, OneChunkStartsAndEndsWithNewline)
+{
+    const QList<QByteArray> inputChunks = {"\nhello\n"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX \n"
+                      "PREFIX hello\n");
+}
+
+TEST(LinePrefixer, OneChunkEndsWithExtraNewline)
+{
+    const QList<QByteArray> inputChunks = {"hello\n\n"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX hello\n"
+                      "PREFIX \n");
+}
+
+TEST(LinePrefixer, OneChunkEndsWithTwoExtraNewlines)
+{
+    const QList<QByteArray> inputChunks = {"hello\n\n\n"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX hello\n"
+                      "PREFIX \n"
+                      "PREFIX \n");
+}
+
+TEST(LinePrefixer, ChunkWithoutNewlineAndChunkWithNewline)
+{
+    const QList<QByteArray> inputChunks = {"hello", "\n"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX hello\n");
+}
+
+TEST(LinePrefixer, ChunkWithoutNewlineAndChunkWithTwoNewlines)
+{
+    const QList<QByteArray> inputChunks = {"hello", "\n\n"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX hello\n"
+                      "PREFIX \n");
+}
+
+TEST(LinePrefixer, ChunkWithTwoNewlinesAndChunkWithoutNewline)
+{
+    const QList<QByteArray> inputChunks = {"\n\n", "hello"};
+
+    auto text = runPrefixer(inputChunks);
+
+    ASSERT_THAT(text, "PREFIX \n"
+                      "PREFIX \n"
+                      "PREFIX hello");
+}
+
+QByteArray runPrefixer(QList<QByteArray> inputChunks)
+{
+    QByteArray actualOutput;
+    ClangBackEnd::LinePrefixer prefixer("PREFIX ");
+
+    for (const auto &chunk : inputChunks)
+        actualOutput += prefixer.prefix(chunk);
+
+    return actualOutput;
+}
+
+} // anonymous namespace