ddprof CGo test

Add documentation to comment on test purpose

Author: r1viollet

scenarios/ddprof_go/Dockerfile

@@ -8,6 +8,14 @@ COPY ./scenarios/ddprof_go/ .
 
 RUN go build main.go
 
+
+RUN apt-get update && apt-get install -y \
+    curl \
+    xz-utils \
+    jq \
+    wget \
+    && rm -rf /var/lib/apt/lists/*
+
 # Install native profiling
 ARG CACHE_DATE=2023-03-01_09:58:27
 COPY ./binaries/ /app/binaries/

scenarios/ddprof_go/README.md

@@ -0,0 +1,8 @@
+# Description
+
+The test aims at checking that we are able to load and capture C allocations.
+
+# Shortcomings
+
+- We are not unwinding through the ASM CGo frame.
+- The quantity of allocations is hard to predict considering the Go allocator reserves mmap regions.

scenarios/ddprof_go/expected_profile.json

@@ -41,9 +41,9 @@
       "profile-type": "alloc-samples",
       "stack-content": [
         {
-          "regular_expression": ";\\[incomplete\\];;runtime\\.asmcgocall\\.abi0;cAllocateMemory",
+          "regular_expression": ".*runtime\\.asmcgocall\\.abi0;cAllocateMemory",
           "percent": 20,
-          "error_margin": 10,
+          "error_margin": 40,
           "labels": [
             {
               "key": "process_id",
@@ -56,7 +56,7 @@
         {
           "regular_expression": ".*;x_cgo_mmap",
           "percent": 80,
-          "error_margin": 10,
+          "error_margin": 40,
           "labels": [
             {
               "key": "process_id",