From 66f028550496c67756d02f9127432e057beeafc8 Mon Sep 17 00:00:00 2001
From: Gabe Black <gabeblack@google.com>
Date: Wed, 28 Nov 2018 17:36:28 -0800
Subject: base: Rename unit test cc files to be *.test.cc.

This makes the name easier to read, looks ok if the file is named with
underscores between words or not, is easy to grep for, and shouldn't
introduce any ambiguities in the file names.

Change-Id: I34b7bcccea2d87c10c0de417dd5e3ef27c4b5666
Reviewed-on: https://gem5-review.googlesource.com/c/14676
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>
Maintainer: Gabe Black <gabeblack@google.com>
---
 src/base/fiber.test.cc | 140 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 140 insertions(+)
 create mode 100644 src/base/fiber.test.cc

(limited to 'src/base/fiber.test.cc')

diff --git a/src/base/fiber.test.cc b/src/base/fiber.test.cc
new file mode 100644
index 000000000..5ed13d425
--- /dev/null
+++ b/src/base/fiber.test.cc
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2018 Google, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Gabe Black
+ */
+
+#include <gtest/gtest.h>
+
+#include <initializer_list>
+#include <iostream>
+#include <vector>
+
+#include "base/fiber.hh"
+
+class TestFiber : public Fiber
+{
+  public:
+    const char *name;
+    std::vector<Fiber *> next;
+
+    TestFiber(const char *name, std::initializer_list<Fiber *> l);
+
+    void checkExpected();
+    void main();
+};
+
+extern TestFiber a;
+extern TestFiber b;
+extern TestFiber c;
+
+TestFiber a("A", { &b, &a, Fiber::primaryFiber(), &b, &c });
+TestFiber b("B", { &a, &c });
+TestFiber c("C", { &a, Fiber::primaryFiber(), Fiber::primaryFiber() });
+
+std::vector<TestFiber *>::iterator expectedIt;
+std::vector<TestFiber *> expected({
+    &a, &b, &a, &a, /* main Fiber, */
+    &a, &b, &c, &a, &c,
+    /* main Fiber, */ &c, &c
+});
+
+TestFiber::TestFiber(
+        const char *name, std::initializer_list<Fiber *> l) :
+    name(name), next(l)
+{}
+
+void
+TestFiber::checkExpected()
+{
+    ASSERT_NE(expectedIt, expected.end());
+    TestFiber *e = *expectedIt++;
+    EXPECT_EQ(e, this) << "Expected " << e->name << ", got " << name;
+}
+
+void
+TestFiber::main()
+{
+    checkExpected();
+    for (auto &n : next) {
+        n->run();
+        checkExpected();
+    }
+}
+
+TEST(Fiber, Switching)
+{
+    expectedIt = expected.begin();
+
+    a.run();
+    EXPECT_EQ(expectedIt - expected.begin(), 4);
+
+    a.run();
+    EXPECT_EQ(expectedIt - expected.begin(), 9);
+
+    c.run();
+    EXPECT_EQ(expectedIt - expected.begin(), 10);
+
+    EXPECT_FALSE(a.finished());
+    EXPECT_FALSE(b.finished());
+    EXPECT_FALSE(c.finished());
+
+    c.run();
+    EXPECT_EQ(expected.end(), expectedIt) <<
+        "Didn't exactly use up the expected Fiber sequence";
+
+    EXPECT_TRUE(c.finished());
+}
+
+int currentIndex = 0;
+
+class LinkedFiber : public Fiber
+{
+  public:
+    const int index;
+    LinkedFiber(Fiber *link, int index) : Fiber(link), index(index) {}
+
+    void
+    main()
+    {
+        EXPECT_EQ(currentIndex, index);
+        currentIndex++;
+    }
+};
+
+TEST(Fiber, Linked)
+{
+    currentIndex = 0;
+
+    LinkedFiber lf3(Fiber::primaryFiber(), 3);
+    LinkedFiber lf2(&lf3, 2);
+    LinkedFiber lf1(&lf2, 1);
+    LinkedFiber lf0(&lf1, 0);
+
+    lf0.run();
+
+    EXPECT_EQ(currentIndex, 4);
+}
-- 
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