src/base/sat_counter.test.cc

44     SatCounter counter(bits);
47         counter++;
50     ASSERT_EQ(counter, max_value);
59     SatCounter counter(bits);
62         counter--;
65     ASSERT_EQ(counter, 0);
69  * Test initializing the counter with a value, updating it and then resetting.
75     SatCounter counter(bits, initial_value);
76     ASSERT_EQ(counter, initial_value);
77     counter++;
78     counter.reset();
79     ASSERT_EQ(counter, initial_value);
89     SatCounter counter(bits);
91     ASSERT_FALSE(counter.isSaturated());
92     for (double value = 0.0; value <= max_value; value++, counter++) {
94         ASSERT_DOUBLE_EQ(counter.calcSaturation(), saturation);
96     ASSERT_TRUE(counter.isSaturated());
106     SatCounter counter(bits);
107     counter++;
108     ASSERT_FALSE(counter.isSaturated());
111     const unsigned diff = counter.saturate();
113     ASSERT_TRUE(counter.isSaturated());
122     SatCounter counter(bits);
125     ASSERT_EQ(counter++, value++);
126     ASSERT_EQ(counter++, value++);
127     ASSERT_EQ(counter--, value--);
128     ASSERT_EQ(counter++, value++);
129     ASSERT_EQ(counter++, value++);
130     ASSERT_EQ(counter--, value--);
131     ASSERT_EQ(counter++, value++);
132     ASSERT_EQ(counter--, value--);
133     ASSERT_EQ(counter--, value--);
134     ASSERT_EQ(counter++, value++);
135     ASSERT_EQ(counter--, value--);
136     ASSERT_EQ(counter--, value--);
137     ASSERT_EQ(counter, 0);
148     SatCounter counter(bits, initial_value);
156     counter <<= 2;
158     ASSERT_EQ(counter, value);
159     counter >>= 1;
161     ASSERT_EQ(counter, value);
164     counter <<= bits;
165     ASSERT_EQ(counter, max_value);
168     counter >>= bits;
169     ASSERT_EQ(counter, 0);
171     // Test saturation against other saturating counter
172     counter.reset();
174     counter <<= other;
176     ASSERT_EQ(counter, value);
177     counter <<= saturated_counter;
179     ASSERT_EQ(counter, max_value);
181     // Test zeroing against other saturating counter
182     counter >>= other;
184     ASSERT_EQ(counter, value);
185     counter >>= saturated_counter;
186     ASSERT_EQ(counter, 0);
226     SatCounter counter(bits, initial_value);
230     // Increase counter value so that we can check if the inner counter is
232     counter++;
234     // Copy counter using both the copy constructor and the copy assignment
235     SatCounter counter_copy_constructor(counter);
236     deep_copy = counter_copy = counter;
248     ASSERT_EQ(counter, initial_value + 1);
262     SatCounter counter_move_constructor(std::move(counter));
263     ASSERT_EQ(counter, 0);
279     SatCounter counter(bits);
285     counter += 2;
287     ASSERT_EQ(counter, value);
288     counter += 3;
290     ASSERT_EQ(counter, value);
291     counter += max_value;
293     ASSERT_EQ(counter, value);
296     counter -= 2;
298     ASSERT_EQ(counter, value);
299     counter -= 3;
301     ASSERT_EQ(counter, value);
302     counter -= max_value;
304     ASSERT_EQ(counter, value);
306     // Test add-assignment of other saturating counter
307     counter += other;
309     ASSERT_EQ(counter, value);
310     counter += saturated_counter;
312     ASSERT_EQ(counter, saturated_counter);
314     // Test subtract-assignment of other saturating counter
315     counter -= other;
317     ASSERT_EQ(counter, value);
318     counter -= saturated_counter;
319     ASSERT_EQ(counter, 0);