C#: Add integration test with extraction and compilation messages

Author: tamasvajk

csharp/ql/integration-tests/all-platforms/standalone/CompilerMessage.expected

@@ -0,0 +1,10 @@
+| Program.cs:2:9:2:9 | CS0103: The name 'M' does not exist in the current context | Error CS0103 The name 'M' does not exist in the current context |
+| Program.cs:2:15:2:15 | CS0103: The name 'M' does not exist in the current context | Error CS0103 The name 'M' does not exist in the current context |
+| Program.cs:2:21:2:21 | CS0103: The name 'M' does not exist in the current context | Error CS0103 The name 'M' does not exist in the current context |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:3:1:3:28 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:4:1:4:48 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:5:1:5:31 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:6:1:6:33 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:7:1:7:37 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:8:1:8:38 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |
+| test-db/working/implicitUsings/GlobalUsings.g.cs:9:1:9:44 | CS8019: Unnecessary using directive. | Hidden CS8019 Unnecessary using directive. |

csharp/ql/integration-tests/all-platforms/standalone/CompilerMessage.ql

@@ -0,0 +1,6 @@
+import csharp
+import semmle.code.csharp.commons.Diagnostics
+
+from Diagnostic diagnostic
+select diagnostic,
+  diagnostic.getSeverityText() + " " + diagnostic.getTag() + " " + diagnostic.getFullMessage()

csharp/ql/integration-tests/all-platforms/standalone/ExtractortMessages.expected

@@ -0,0 +1,8 @@
+| Program.cs:2:9:2:11 | Failed to determine type | 5 | M() |
+| Program.cs:2:9:2:11 | Unable to resolve target for call. (Compilation error?) | 5 | M() |
+| Program.cs:2:9:2:17 | Failed to determine type | 5 | M() + M() |
+| Program.cs:2:9:2:23 | Failed to determine type | 5 | M() + M() + M() |
+| Program.cs:2:15:2:17 | Failed to determine type | 5 | M() |
+| Program.cs:2:15:2:17 | Unable to resolve target for call. (Compilation error?) | 5 | M() |
+| Program.cs:2:21:2:23 | Failed to determine type | 5 | M() |
+| Program.cs:2:21:2:23 | Unable to resolve target for call. (Compilation error?) | 5 | M() |

csharp/ql/integration-tests/all-platforms/standalone/ExtractortMessages.ql

@@ -0,0 +1,6 @@
+import csharp
+import semmle.code.csharp.commons.Diagnostics
+
+query predicate extractorMessages(ExtractorMessage msg, int severity, string elementText) {
+  msg.getSeverity() = severity and msg.getElementText() = elementText
+}

csharp/ql/integration-tests/all-platforms/standalone/Program.cs

@@ -1 +1,2 @@
-var dummy = "dummy";
+var dummy = "dummy";
+dummy = M() + M() + M();