1 /**
2 * Copyright © 2019 IBM Corporation
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "sysfs.hpp"
18
19 #include <sys/param.h>
20
21 #include <cerrno>
22 #include <cstdlib>
23 #include <fstream>
24
25 #include <gtest/gtest.h>
26
27 namespace fs = std::filesystem;
28
29 constexpr unsigned long maxBrightnessVal = 128;
30
31 class FakeSysfsLed : public phosphor::led::SysfsLed
32 {
33 public:
34 FakeSysfsLed(FakeSysfsLed& other) = delete;
35 FakeSysfsLed(FakeSysfsLed&& other) = delete;
36 FakeSysfsLed& operator=(FakeSysfsLed& other) = delete;
37 FakeSysfsLed&& operator=(FakeSysfsLed&& other) = delete;
38
create()39 static FakeSysfsLed create()
40 {
41 static constexpr auto tmplt = "/tmp/FakeSysfsLed.XXXXXX";
42 std::array<char, MAXPATHLEN> buffer = {0};
43
44 strncpy(buffer.data(), tmplt, buffer.size() - 1);
45 char* dir = mkdtemp(buffer.data());
46 if (dir == nullptr)
47 {
48 throw std::system_error(errno, std::system_category());
49 }
50
51 return FakeSysfsLed(fs::path(dir));
52 }
53
~FakeSysfsLed()54 ~FakeSysfsLed() override
55 {
56 fs::remove_all(root);
57 }
58
59 private:
FakeSysfsLed(fs::path && path)60 explicit FakeSysfsLed(fs::path&& path) : SysfsLed(std::move(path))
61 {
62 static constexpr auto attrs = {attrBrightness, attrTrigger, attrDelayOn,
63 attrDelayOff};
64 for (const auto& attr : attrs)
65 {
66 fs::path p = root / attr;
67 std::ofstream f(p, std::ios::out);
68 f.exceptions(std::ofstream::failbit);
69 }
70
71 fs::path p = root / attrMaxBrightness;
72 std::ofstream f(p, std::ios::out);
73 f.exceptions(std::ofstream::failbit);
74 f << maxBrightnessVal;
75 }
76 };
77
TEST(Sysfs,getBrightness)78 TEST(Sysfs, getBrightness)
79 {
80 constexpr unsigned long brightness = 127;
81 FakeSysfsLed fsl = FakeSysfsLed::create();
82
83 fsl.setBrightness(brightness);
84 ASSERT_EQ(brightness, fsl.getBrightness());
85 }
86
TEST(Sysfs,getMaxBrightness)87 TEST(Sysfs, getMaxBrightness)
88 {
89 FakeSysfsLed fsl = FakeSysfsLed::create();
90
91 ASSERT_EQ(maxBrightnessVal, fsl.getMaxBrightness());
92 }
93
TEST(Sysfs,getTrigger)94 TEST(Sysfs, getTrigger)
95 {
96 FakeSysfsLed fsl = FakeSysfsLed::create();
97
98 // We need to set the complete attribute value in UT, Because the LED driver
99 // is not called in UT to automatically set `none` to `[none] xxx yyy`
100 fsl.setTrigger("[none] timer heartbeat default-on");
101 ASSERT_EQ("none", fsl.getTrigger());
102 }
103
TEST(Sysfs,getTriggerBlink)104 TEST(Sysfs, getTriggerBlink)
105 {
106 FakeSysfsLed fsl = FakeSysfsLed::create();
107 fsl.setTrigger("none [timer] heartbeat default-on");
108 ASSERT_EQ("timer", fsl.getTrigger());
109 }
110
TEST(Sysfs,getDelayOn)111 TEST(Sysfs, getDelayOn)
112 {
113 constexpr unsigned long delayOn = 250;
114 FakeSysfsLed fsl = FakeSysfsLed::create();
115
116 fsl.setDelayOn(delayOn);
117 ASSERT_EQ(delayOn, fsl.getDelayOn());
118 }
119
TEST(Sysfs,getDelayOff)120 TEST(Sysfs, getDelayOff)
121 {
122 constexpr unsigned long delayOff = 750;
123 FakeSysfsLed fsl = FakeSysfsLed::create();
124
125 fsl.setDelayOff(delayOff);
126 ASSERT_EQ(delayOff, fsl.getDelayOff());
127 }
128