From 71f431eec9061c749e856c5c80cf4889e4fd4755 Mon Sep 17 00:00:00 2001
From: Dave Henderson <dhenderson@gmail.com>
Date: Sat, 22 Jun 2024 15:41:54 -0400
Subject: [PATCH] ci(test): Add 32-bit CI tests

Signed-off-by: Dave Henderson <dhenderson@gmail.com>
---
 .github/workflows/build.yml | 15 +++++++++++++++
 .github/workflows/lint.yml  |  1 -
 Dockerfile.test32bit        | 16 ++++++++++++++++
 Makefile                    |  9 ++++++---
 4 files changed, 37 insertions(+), 4 deletions(-)
 create mode 100644 Dockerfile.test32bit

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1ec9fe305..e10ad372b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -27,6 +27,21 @@ jobs:
           path: bin/gomplate
       - run: make test
       - run: make integration
+  linux-32bit-build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        platform: [ linux/386, linux/armhf ]
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3.0.0
+      - name: Test on ${{ matrix.platform }}
+        run: |
+          docker build --platform ${{ matrix.platform }} --iidfile test32bit.iid -f Dockerfile.test32bit .
+          docker run --rm $(<test32bit.iid) make test
   windows-build:
     runs-on: windows-latest
     env:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 0127c2719..f2d3b0385 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -22,4 +22,3 @@ jobs:
         with:
           version: latest
           args: --verbose --max-same-issues=0 --max-issues-per-linter=0
-
diff --git a/Dockerfile.test32bit b/Dockerfile.test32bit
new file mode 100644
index 000000000..cd3298e90
--- /dev/null
+++ b/Dockerfile.test32bit
@@ -0,0 +1,16 @@
+FROM golang:1.22-alpine
+
+ARG TARGETOS
+ARG TARGETARCH
+ARG TARGETVARIANT
+ENV GOOS=$TARGETOS GOARCH=$TARGETARCH
+
+RUN apk add --no-cache make git
+
+WORKDIR /go/src/github.com/hairyhenderson/gomplate
+COPY go.mod /go/src/github.com/hairyhenderson/gomplate
+COPY go.sum /go/src/github.com/hairyhenderson/gomplate
+
+RUN go mod download -x
+
+COPY . /go/src/github.com/hairyhenderson/gomplate
diff --git a/Makefile b/Makefile
index 046092da6..abadcb9a6 100644
--- a/Makefile
+++ b/Makefile
@@ -147,12 +147,15 @@ $(PREFIX)/bin/$(PKG_NAME)$(call extension,$(GOOS)): $(PREFIX)/bin/$(PKG_NAME)_$(
 
 build: $(PREFIX)/bin/$(PKG_NAME)_$(GOOS)-$(GOARCH)$(TARGETVARIANT)$(call extension,$(GOOS)) $(PREFIX)/bin/$(PKG_NAME)$(call extension,$(GOOS))
 
-ifeq ($(OS),Windows_NT)
+# test with race detector on supported platforms
+# windows/amd64 is supported in theory, but in practice it requires a C compiler
+race_platforms := linux/amd64 linux/ppc64le linux/arm64 linux/s390x freebsd/amd64 netbsd/amd64 darwin/amd64 darwin/arm64 
+ifneq (,$(findstring $(GOOS)/$(GOARCH),$(race_platforms)))
 test:
-	$(GO) test -coverprofile=c.out ./...
+	$(GO) test -race -coverprofile=c.out ./...
 else
 test:
-	$(GO) test -race -coverprofile=c.out ./...
+	$(GO) test -coverprofile=c.out ./...
 endif
 
 .SECONDEXPANSION: