Fix Go call graph query tests and VSIX packaging

Go query test fixes:
- Add go.mod to CallGraphFromTo, CallGraphFrom, CallGraphTo test dirs
  (Go extractor requires module file for proper extraction)
- Add main() function to all Go Example1.go test files
- Fix fallback filter in all 3 Go call graph queries:
  getParentContainer().getParentContainer().getBaseName() = "test"
  → getFile().getBaseName() = "Example1.go"
- Update all Go .expected files with non-empty results (4-5 rows each)

VSIX packaging fix:
- Add .tmp/** to .vscodeignore (was bundling 177MB of test databases)
- VSIX size: 71.48MB → 788KB

Author: data-douser

extensions/vscode/.vscodeignore

@@ -16,6 +16,7 @@ esbuild.config.js
 coverage/**
 
 # Build artifacts that shouldn't be in the VSIX
+.tmp/**
 **/*.test.ts
 **/*.test.js
 **/*.test.cjs

server/ql/go/tools/src/CallGraphFrom/CallGraphFrom.ql

@@ -27,8 +27,8 @@ where
     // Use external predicate if available
     source.getName() = getSourceFunctionName()
     or
-    // Fallback for unit tests: include test files
+    // Fallback for unit tests: include calls from the example test file
     not exists(getSourceFunctionName()) and
-    source.getFile().getParentContainer().getParentContainer().getBaseName() = "test"
+    source.getFile().getBaseName() = "Example1.go"
   )
 select call, "Call from `" + source.getName() + "` to `" + call.getTarget().getName() + "`"

server/ql/go/tools/src/CallGraphFromTo/CallGraphFromTo.ql

@@ -56,10 +56,10 @@ where
       )
     )
     or
-    // Fallback for unit tests: include test files
+    // Fallback for unit tests: include calls from the example test file
     not exists(getSourceFunctionName()) and
     not exists(getTargetFunctionName()) and
-    caller.getFile().getParentContainer().getParentContainer().getBaseName() = "test"
+    caller.getFile().getBaseName() = "Example1.go"
   )
 select call,
   "Reachable call from `" + caller.getName() + "` to `" + call.getTarget().getName() + "`"

server/ql/go/tools/src/CallGraphTo/CallGraphTo.ql

@@ -35,8 +35,8 @@ where
     // Use external predicate if available
     call.getTarget().getName() = getTargetFunctionName()
     or
-    // Fallback for unit tests: include test files
+    // Fallback for unit tests: include calls from the example test file
     not exists(getTargetFunctionName()) and
-    call.getFile().getParentContainer().getParentContainer().getBaseName() = "test"
+    call.getFile().getBaseName() = "Example1.go"
   )
 select call, "Call to `" + call.getTarget().getName() + "` from `" + getCallerName(call) + "`"

server/ql/go/tools/test/CallGraphFrom/CallGraphFrom.expected

@@ -0,0 +1,4 @@
+| Example1.go:9:2:9:13 | call to unrelated1 | Call from `unrelated2` to `unrelated1` |
+| Example1.go:14:2:14:13 | call to unrelated1 | Call from `sourceFunc` to `unrelated1` |
+| Example1.go:15:2:15:13 | call to unrelated2 | Call from `sourceFunc` to `unrelated2` |
+| Example1.go:19:2:19:13 | call to sourceFunc | Call from `main` to `sourceFunc` |

server/ql/go/tools/test/CallGraphFrom/Example1.go

@@ -14,3 +14,7 @@ func sourceFunc() {
 	unrelated1()
 	unrelated2()
 }
+
+func main() {
+	sourceFunc()
+}

server/ql/go/tools/test/CallGraphFrom/go.mod

@@ -0,0 +1 @@
+module languages/go/tools/test/CallGraphFrom

server/ql/go/tools/test/CallGraphFromTo/CallGraphFromTo.expected

@@ -1 +1,4 @@
-
+| Example1.go:7:2:7:12 | call to unrelated | Reachable call from `target` to `unrelated` |
+| Example1.go:11:2:11:9 | call to target | Reachable call from `intermediate` to `target` |
+| Example1.go:15:2:15:15 | call to intermediate | Reachable call from `source` to `intermediate` |
+| Example1.go:19:2:19:9 | call to source | Reachable call from `main` to `source` |

server/ql/go/tools/test/CallGraphFromTo/Example1.go

@@ -1,7 +1,6 @@
 package main
 
 func unrelated() {
-	// No calls
 }
 
 func target() {
@@ -15,3 +14,7 @@ func intermediate() {
 func source() {
 	intermediate()
 }
+
+func main() {
+	source()
+}

server/ql/go/tools/test/CallGraphFromTo/go.mod

@@ -0,0 +1 @@
+module languages/go/tools/test/CallGraphFromTo