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root/public/ibx/trunk/fbintf/testsuite/Test10.pas
Revision: 217
Committed: Fri Mar 16 10:27:26 2018 UTC (6 years, 1 month ago) by tony
Content type: text/x-pascal
File size: 5218 byte(s)
Log Message: 
Fixes Merged

File Contents

# Content
1 unit Test10;
2 {$IFDEF MSWINDOWS}
3 {$DEFINE WINDOWS}
4 {$ENDIF}
5
6 {$IFDEF FPC}
7 {$mode delphi}
8 {$codepage utf8}
9 {$ENDIF}
10
11 {Test 10: Event Handling}
12
13 {
14 This test opens the employee example databases with the supplied user name/password
15 and then tests event handling.
16
17 1. Simple wait for async event.
18
19 2. Signal two more events to show that events counts are maintained.
20
21 3. Async Event wait followed by signal event. Event Counts should include all
22 previous events.
23
24 4. Demonstrate event cancel by waiting for event, cancelling it and then signalling
25 event. No change to signal flag after waiting in a tight loop implies event cancelled.
26
27 5. Wait for sync Event.
28 }
29
30 interface
31
32 uses
33 Classes, SysUtils, TestManager, IB;
34
35 type
36
37 { TTest10 }
38
39 TTest10 = class(TTestBase)
40 private
41 FEventSignalled: boolean;
42 procedure EventsTest(Attachment: IAttachment);
43 procedure EventReport(Sender: IEvents);
44 procedure ShowEventReport;
45 procedure ShowEventCounts(Intf: IEvents);
46 public
47 function TestTitle: AnsiString; override;
48 procedure RunTest(CharSet: AnsiString; SQLDialect: integer); override;
49 end;
50
51
52 implementation
53
54 { TTest10 }
55
56 const
57 sqlEvent = 'Execute Block As Begin Post_Event(''TESTEVENT''); End';
58
59 procedure TTest10.EventsTest(Attachment: IAttachment);
60 var EventHandler: IEvents;
61 i: integer;
62 WaitCount: integer;
63 begin
64 FEventSignalled := false;
65 EventHandler := Attachment.GetEventHandler('TESTEVENT');
66 writeln(OutFile,'Call Async Wait');
67 EventHandler.AsyncWaitForEvent(EventReport);
68 writeln(OutFile,'Async Wait Called');
69 sleep(500);
70 CheckSynchronize;
71 if FEventSignalled then
72 begin
73 writeln(OutFile,'First Event - usually ignored');
74 FEventSignalled := false;
75 EventHandler.AsyncWaitForEvent(EventReport);
76 sleep(100);
77 CheckSynchronize;
78 if FEventSignalled then
79 begin
80 writeln(OutFile,'Unexpected Event 1');
81 Exit;
82 end;
83 end;
84 writeln(OutFile,'Signal Event');
85 Attachment.ExecImmediate([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],sqlEvent);
86 while not FEventSignalled do Sleep(50);
87 ShowEventCounts(EventHandler);
88 FEventSignalled := false;
89
90 writeln(OutFile,'Two more events');
91 Attachment.ExecImmediate([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],sqlEvent);
92 Attachment.ExecImmediate([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],sqlEvent);
93 if FEventSignalled then
94 begin
95 writeln(OutFile,'Unexpected Event 2');
96 FEventSignalled := false
97 end;
98 writeln(OutFile,'Call Async Wait');
99 EventHandler.AsyncWaitForEvent(EventReport);
100 writeln(OutFile,'Async Wait Called');
101 sleep(500);
102 CheckSynchronize;
103 if FEventSignalled then
104 begin
105 writeln(OutFile,'Deferred Events Caught');
106 ShowEventCounts(EventHandler);
107 FEventSignalled := false;
108 EventHandler.AsyncWaitForEvent(EventReport);
109 sleep(100);
110 if FEventSignalled then
111 writeln(OutFile,'Unexpected Event 3');
112 end;
113 writeln(OutFile,'Signal Event');
114 Attachment.ExecImmediate([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],sqlEvent);
115 while not FEventSignalled do;
116 ShowEventCounts(EventHandler);
117
118 FEventSignalled := false;
119 writeln(OutFile,'Async Wait: Test Cancel');
120 EventHandler.AsyncWaitForEvent(EventReport);
121 CheckSynchronize;
122 writeln(OutFile,'Async Wait Called');
123 EventHandler.Cancel;
124 writeln(OutFile,'Event Cancelled');
125 FEventSignalled := false;
126 Attachment.ExecImmediate([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],sqlEvent);
127 WaitCount := 100000000;
128 while not FEventSignalled and (WaitCount > 0) do Dec(WaitCount);
129 if WaitCount = 0 then writeln(OutFile,'Time Out - Cancel Worked!')
130 else
131 writeln(OutFile,'Event called - so Cancel failed');
132
133 writeln(OutFile,'Sync wait');
134 CheckSynchronize;
135 Attachment.ExecImmediate([isc_tpb_write,isc_tpb_nowait,isc_tpb_concurrency],sqlEvent);
136 EventHandler.WaitForEvent;
137 writeln(OutFile,'Event Signalled');
138 ShowEventCounts(EventHandler);
139 EventHandler := nil;
140 CheckSynchronize;
141 end;
142
143 procedure TTest10.EventReport(Sender: IEvents);
144 begin
145 FEventSignalled := true;
146 TThread.Synchronize(nil,ShowEventReport);
147 end;
148
149 procedure TTest10.ShowEventReport;
150 begin
151 writeln(OutFile,'Event Signalled');
152 end;
153
154 procedure TTest10.ShowEventCounts(Intf: IEvents);
155 var
156 i: integer;
157 EventCounts: TEventCounts;
158 begin
159 EventCounts := Intf.ExtractEventCounts;
160 for i := 0 to length(EventCounts) - 1 do
161 writeln(OutFile,'Event Counts: ',EventCounts[i].EventName,', Count = ',EventCounts[i].Count);
162 end;
163
164 function TTest10.TestTitle: AnsiString;
165 begin
166 Result := 'Test 10: Event Handling';
167 end;
168
169 procedure TTest10.RunTest(CharSet: AnsiString; SQLDialect: integer);
170 var Attachment: IAttachment;
171 DPB: IDPB;
172 begin
173 DPB := FirebirdAPI.AllocateDPB;
174 DPB.Add(isc_dpb_user_name).setAsString(Owner.GetUserName);
175 DPB.Add(isc_dpb_password).setAsString(' ');
176 DPB.Add(isc_dpb_lc_ctype).setAsString(CharSet);
177 DPB.Add(isc_dpb_set_db_SQL_dialect).setAsByte(SQLDialect);
178 DPB.Find(isc_dpb_password).setAsString(Owner.GetPassword);
179 Attachment := FirebirdAPI.OpenDatabase(Owner.GetEmployeeDatabaseName,DPB);
180 EventsTest(Attachment);
181 Attachment.Disconnect;
182 end;
183
184 initialization
185 RegisterTest(TTest10);
186
187 end.
188