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Arduino/Solid.Arduino.Test/MockSerialConnection.cs at master · SolidSoils/Arduino · GitHub
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using
System
;
using
System
.
Collections
.
Generic
;
using
System
.
IO
.
Ports
;
using
System
.
Reflection
;
using
System
.
Text
;
using
System
.
Threading
;
using
System
.
Threading
.
Tasks
;
namespace
Solid
.
Arduino
.
Test
{
internal
class
MockSerialConnection
:
ISerialConnection
{
private
static
readonly
ConstructorInfo
SerialDataReceivedEventArgsConstructor
=
typeof
(
SerialDataReceivedEventArgs
)
.
GetConstructor
(
BindingFlags
.
NonPublic
|
BindingFlags
.
Instance
,
null
,
new
[
]
{
typeof
(
SerialData
)
}
,
null
)
;
private
bool
_isOpen
;
private
string
_newLine
=
"
\n
"
;
private
readonly
Queue
<
byte
[
]
>
_expectedRequestQueue
=
new
Queue
<
byte
[
]
>
(
)
;
private
readonly
Queue
<
byte
[
]
>
_responseQueue
=
new
Queue
<
byte
[
]
>
(
)
;
private
byte
[
]
_currentRequest
,
_currentResponse
;
private
int
_responseByteCount
,
_currentResponseIndex
,
_currentRequestIndex
;
#region ISerialConnection Members
public
int
BaudRate
{
get
{
return
9600
;
}
set
{
}
}
public
string
PortName
{
get
{
return
"COM3"
;
}
set
{
}
}
public
event
SerialDataReceivedEventHandler
DataReceived
;
public
bool
IsOpen
{
get
{
return
_isOpen
;
}
}
internal
int
QueuedRequestCount
{
get
{
return
_expectedRequestQueue
.
Count
;
}
}
public
string
NewLine
{
get
{
return
_newLine
;
}
set
{
_newLine
=
value
;
}
}
public
int
BytesToRead
{
get
{
return
_responseByteCount
;
}
}
public
void
Open
(
)
{
if
(
_isOpen
)
throw
new
InvalidOperationException
(
"MOCK VALIDATION: Connection is already open."
)
;
_isOpen
=
true
;
}
public
void
Close
(
)
{
_isOpen
=
false
;
}
public
int
ReadByte
(
)
{
if
(
_responseByteCount
==
0
)
throw
new
InvalidOperationException
(
"MOCK VALIDATION: No data."
)
;
if
(
_currentResponse
==
null
||
_currentResponseIndex
>=
_currentResponse
.
Length
)
{
_currentResponse
=
_responseQueue
.
Dequeue
(
)
;
_currentResponseIndex
=
0
;
}
_responseByteCount
--
;
return
_currentResponse
[
_currentResponseIndex
++
]
;
}
public
void
Write
(
string
text
)
{
if
(
text
==
null
)
throw
new
ArgumentNullException
(
"MOCK VALIDATION: text"
)
;
if
(
text
.
Length
==
0
)
throw
new
ArgumentException
(
"MOCK VALIDATION: Text can not be empty."
)
;
foreach
(
char
c
in
text
.
ToCharArray
(
)
)
{
AssertEqualToExpectedRequestByte
(
Convert
.
ToByte
(
c
)
)
;
}
}
public
void
Write
(
byte
[
]
buffer
,
int
offset
,
int
count
)
{
if
(
buffer
==
null
)
throw
new
ArgumentNullException
(
"MOCK VALIDATION: buffer"
)
;
if
(
offset
<
0
)
throw
new
ArgumentException
(
"MOCK VALIDATION: offset"
)
;
if
(
count
<
1
)
throw
new
ArgumentException
(
"MOCK VALIDATION: count"
)
;
if
(
count
-
offset
>
buffer
.
Length
)
throw
new
InvalidOperationException
(
"MOCK VALIDATION: Out of range"
)
;
for
(
int
x
=
0
;
x
<
count
;
x
++
)
{
AssertEqualToExpectedRequestByte
(
buffer
[
x
]
)
;
}
}
public
void
WriteLine
(
string
text
)
{
if
(
text
==
null
)
text
=
string
.
Empty
;
foreach
(
char
c
in
string
.
Concat
(
text
,
NewLine
)
.
ToCharArray
(
)
)
{
AssertEqualToExpectedRequestByte
(
Convert
.
ToByte
(
c
)
)
;
}
}
public
void
Dispose
(
)
{
}
#endregion
#region Public Testmethods
public
void
EnqueueResponse
(
params
byte
[
]
data
)
{
_responseQueue
.
Enqueue
(
data
)
;
_responseByteCount
+=
data
.
Length
;
}
public
void
EnqueueRequest
(
params
byte
[
]
request
)
{
_expectedRequestQueue
.
Enqueue
(
request
)
;
}
public
void
EnqueueRequestAndResponse
(
byte
[
]
request
,
params
byte
[
]
response
)
{
_expectedRequestQueue
.
Enqueue
(
request
)
;
if
(
response
.
Length
>
0
)
{
_responseQueue
.
Enqueue
(
response
)
;
_responseByteCount
+=
response
.
Length
;
}
}
public
void
EnqueueStringResponse
(
string
data
)
{
_responseQueue
.
Enqueue
(
Encoding
.
ASCII
.
GetBytes
(
data
)
)
;
_responseByteCount
+=
data
.
Length
;
}
public
void
EnqueueStringRequest
(
string
data
)
{
_expectedRequestQueue
.
Enqueue
(
Encoding
.
ASCII
.
GetBytes
(
data
)
)
;
}
public
void
HandleStringResponse
(
string
response
,
Action
handler
)
{
EnqueueStringResponse
(
response
)
;
Task
t
=
Task
.
Run
(
handler
)
;
while
(
t
.
Status
!=
TaskStatus
.
Running
)
Thread
.
Sleep
(
1
)
;
Thread
.
Sleep
(
3
)
;
while
(
_responseQueue
.
Count
>
0
)
ReceiveData
(
_responseQueue
.
Peek
(
)
)
;
try
{
t
.
Wait
(
)
;
}
catch
(
AggregateException
ex
)
{
throw
ex
.
InnerException
;
}
}
public
void
MockReceiveDelayed
(
string
data
)
{
Thread
.
Sleep
(
20
)
;
_responseQueue
.
Enqueue
(
Encoding
.
ASCII
.
GetBytes
(
data
)
)
;
_responseByteCount
+=
data
.
Length
;
while
(
_responseQueue
.
Count
>
0
)
ReceiveData
(
_responseQueue
.
Peek
(
)
)
;
}
#endregion
#region Private Methods
private
void
AssertEqualToExpectedRequestByte
(
byte
p
)
{
if
(
_currentRequest
==
null
||
_currentRequestIndex
==
_currentRequest
.
Length
)
{
if
(
_expectedRequestQueue
.
Count
<
1
)
throw
new
InvalidOperationException
(
"MOCK VALIDATION: No request data expected."
)
;
_currentRequest
=
_expectedRequestQueue
.
Dequeue
(
)
;
_currentRequestIndex
=
0
;
}
if
(
p
!=
_currentRequest
[
_currentRequestIndex
]
)
throw
new
InvalidOperationException
(
string
.
Format
(
"MOCK VALIDATION: Issued request byte {0:X} not equal to expected request byte {1:X}."
,
p
,
_currentRequest
[
_currentRequestIndex
]
)
)
;
_currentRequestIndex
++
;
if
(
_currentRequestIndex
==
_currentRequest
.
Length
)
{
// Current request has been fully sent; now deliver response.
while
(
_responseQueue
.
Count
>
0
)
ReceiveData
(
_responseQueue
.
Peek
(
)
)
;
}
}
private
void
ReceiveData
(
byte
[
]
response
)
{
if
(
this
.
DataReceived
==
null
||
response
.
Length
==
0
)
return
;
ConstructorInfo
_serialDataReceivedEventArgsConstructor
=
typeof
(
SerialDataReceivedEventArgs
)
.
GetConstructor
(
BindingFlags
.
NonPublic
|
BindingFlags
.
Instance
,
null
,
new
[
]
{
typeof
(
SerialData
)
}
,
null
)
;
var
charReceivedEventArgs
=
(
SerialDataReceivedEventArgs
)
_serialDataReceivedEventArgsConstructor
.
Invoke
(
new
object
[
]
{
SerialData
.
Chars
}
)
;
for
(
int
x
=
0
;
x
<
response
.
Length
;
x
++
)
{
if
(
response
[
x
]
==
26
)
DataReceived
(
this
,
(
SerialDataReceivedEventArgs
)
_serialDataReceivedEventArgsConstructor
.
Invoke
(
new
object
[
]
{
SerialData
.
Eof
}
)
)
;
else
DataReceived
(
this
,
charReceivedEventArgs
)
;
}
}
#endregion
}
}
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