[OE-core][PATCH v4] go: add ptest support

[Pratik Farkase <pratik.farkase@est.tech>]

Add ptest infrastructure to test the Go standard library.

- Run 'go test -short std' via run-ptest script
- Install source tree and pkg/include headers
- Create VERSION file for architecture detection
- Exclude multi-arch binary testdata to avoid QA errors

Signed-off-by: Pratik Farkase <pratik.farkase@est.tech>
---
Changes in v4:
- Run only 17 curated packages that work within 1GB RAM constraint
- Test runtime reduced to ~6-7 minutes

Changes in v3:
- Move go from PTESTS_FAST to PTESTS_SLOW (~45min runtime)
  inside ptest-packagelists.inc

Changes in v2:
- Exclude .elf* files to fix QA arch errors on all architectures
- Exclude *-x86-64* files to fix additional arch-specific test binaries
- Tested on x86-64, x86, aarch64, and arm builds
---
 .../distro/include/ptest-packagelists.inc     |  1 +
 meta/recipes-devtools/go/go-1.26.0.inc        |  1 +
 meta/recipes-devtools/go/go/run-ptest         | 42 +++++++++++++++++++
 meta/recipes-devtools/go/go_1.26.0.bb         | 27 +++++++++++-
 4 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100755 meta/recipes-devtools/go/go/run-ptest

diff --git a/meta/conf/distro/include/ptest-packagelists.inc b/meta/conf/distro/include/ptest-packagelists.inc
index 1bb7458fc9..c7f79e96b5 100644
--- a/meta/conf/distro/include/ptest-packagelists.inc
+++ b/meta/conf/distro/include/ptest-packagelists.inc
@@ -118,6 +118,7 @@ PTESTS_SLOW = "\
     gettext \
     glib-2.0 \
     gnutls \
+    go \
     gstreamer1.0 \
     less \
     libevent \
diff --git a/meta/recipes-devtools/go/go-1.26.0.inc b/meta/recipes-devtools/go/go-1.26.0.inc
index 7d8a68e3b2..611f00aaab 100644
--- a/meta/recipes-devtools/go/go-1.26.0.inc
+++ b/meta/recipes-devtools/go/go-1.26.0.inc
@@ -16,5 +16,6 @@ SRC_URI += "\
     file://0009-go-Filter-build-paths-on-staticly-linked-arches.patch \
     file://0010-cmd-go-clear-GOROOT-for-func-ldShared-when-trimpath-.patch \
     file://0011-cmd-link-stop-forcing-binutils-gold-dependency-on-aa.patch \
+    file://run-ptest \
 "
 SRC_URI[main.sha256sum] = "c9132a8a1f6bd2aa4aad1d74b8231d95274950483a4950657ee6c56e6e817790"
diff --git a/meta/recipes-devtools/go/go/run-ptest b/meta/recipes-devtools/go/go/run-ptest
new file mode 100755
index 0000000000..032aa56978
--- /dev/null
+++ b/meta/recipes-devtools/go/go/run-ptest
@@ -0,0 +1,42 @@
+#!/bin/sh
+
+PTEST_DIR=/usr/lib/go/ptest
+GOROOT=/usr/lib/go
+
+export GOROOT
+export PATH=$GOROOT/bin:$PATH
+export ZONEINFO=/usr/share/zoneinfo
+
+# Set up Go environment
+ln -sf $PTEST_DIR/src $GOROOT/src
+mkdir -p $GOROOT/pkg/include
+cp $PTEST_DIR/pkg/include/* $GOROOT/pkg/include/
+cp $PTEST_DIR/VERSION $GOROOT/VERSION
+
+cd $GOROOT
+
+for pkg in \
+    bytes \
+    cmp \
+    container/heap \
+    container/list \
+    container/ring \
+    errors \
+    fmt \
+    math \
+    math/bits \
+    math/rand \
+    path \
+    strings \
+    sync/atomic \
+    text/tabwriter \
+    unicode \
+    unicode/utf8 \
+    unicode/utf16
+do
+    if go test -short "$pkg" >/dev/null 2>&1; then
+        echo "PASS: $pkg"
+    else
+        echo "FAIL: $pkg"
+    fi
+done
diff --git a/meta/recipes-devtools/go/go_1.26.0.bb b/meta/recipes-devtools/go/go_1.26.0.bb
index 46f5fbc6be..e5141544b4 100644
--- a/meta/recipes-devtools/go/go_1.26.0.bb
+++ b/meta/recipes-devtools/go/go_1.26.0.bb
@@ -1,7 +1,7 @@
 require go-${PV}.inc
 require go-target.inc
 
-inherit linuxloader
+inherit linuxloader ptest
 
 CGO_LDFLAGS:append = " -no-pie"
 
@@ -16,3 +16,28 @@ python() {
         d.appendVar('INSANE_SKIP:%s' % d.getVar('PN'), " textrel")
 }
 
+do_install_ptest() {
+    install -d ${D}${PTEST_PATH}/src
+    install -d ${D}${PTEST_PATH}/pkg/include
+
+    cp ${S}/pkg/include/* ${D}${PTEST_PATH}/pkg/include/
+    echo "go${PV}" > ${D}${PTEST_PATH}/VERSION
+
+    cd ${S}/src
+    find . -type d -exec install -d ${D}${PTEST_PATH}/src/{} \;
+    find . -type f \
+        ! -path "*/testdata/*.elf*" \
+        ! -path "*/testdata/*-x86-64*" \
+        ! -path "*/testdata/*.obj" \
+        ! -path "*/testdata/*.syso" \
+        ! -path "*/testdata/*.so" \
+        ! -path "*/testdata/*.so_" \
+        ! -path "*/testdata/*-exec" \
+        ! -path "*/testdata/test32*" \
+        ! -path "*/testdata/test64*" \
+        ! -path "*/race/*.syso" \
+        ! -path "*/boring/syso/*.syso" \
+        -exec install -m 0644 {} ${D}${PTEST_PATH}/src/{} \;
+}
+
+RDEPENDS:${PN}-ptest += "bash tzdata gcc"
-- 
2.43.0