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#!/usr/bin/env bats
load helpers
# read the platform information from the configuration of the main image for
# the oci layout in $1
read_oci_layout_platform() {
run jq -r '.manifests[0].digest' "$1"/index.json
assert $status -eq 0
local alg="${output%%:*}"
local hex="${output##*:}"
run jq -r '.config.digest' "$1"/blobs/"$alg"/"$hex"
assert $status -eq 0
alg="${output%%:*}"
hex="${output##*:}"
run jq -r '.os' "$1"/blobs/"$alg"/"$hex"
assert $status -eq 0
local os="$output"
run jq -r '.architecture' "$1"/blobs/"$alg"/"$hex"
assert $status -eq 0
local arch="$output"
run jq -r '.variant' "$1"/blobs/"$alg"/"$hex"
assert $status -eq 0
local variant="$output"
if test "$variant" = null ; then
variant=
fi
echo "$os"/"$arch""${variant:+/$variant}"
}
@test "implicit-and-explicit-platforms" {
_prefetch busybox
local context="$TEST_SCRATCH_DIR"/context
mkdir -p "$context"
cat > "$context"/Dockerfile.scratch << EOF
FROM scratch
COPY . .
EOF
cat > "$context"/Dockerfile.base << EOF
FROM busybox
EOF
cat > "$context"/Dockerfile.derived << EOF
FROM busybox
COPY . .
EOF
run_buildah version --json
run jq -r .buildPlatform <<< "$output"
assert $status -eq 0
local buildplatform="$output"
# these should either get the default determined at runtime, or the value passed
for platform in "" linux/amd64 linux/arm64 linux/arm64/v8 ; do
local arch="${platform##*/}"
run_buildah build --layers --no-cache -t oci:"$TEST_SCRATCH_DIR"/scratch-"${arch:-default}" ${platform:+--platform "$platform"} -f "$context"/Dockerfile.scratch "$context"
run read_oci_layout_platform "$TEST_SCRATCH_DIR"/scratch-"${arch:-default}"
assert $status -eq 0
assert "$output" = "${platform:-${buildplatform}}" "for build based on scratch for ${platform:-default platform}"
done
# these should inherit the values from the base image that we used for the given platform
for platform in "" linux/amd64 linux/arm64 linux/arm64/v8 ; do
arch="${platform##*/}"
for base in base derived ; do
run_buildah build --layers --no-cache -t "$base"-"${arch:-default}" ${platform:+--platform "$platform"} -f "$context"/Dockerfile."$base" "$context"
run_buildah push "$base"-"${arch:-default}" oci:"$TEST_SCRATCH_DIR"/"$base"-"${arch:-default}"
done
run read_oci_layout_platform "$TEST_SCRATCH_DIR"/base-"${arch:-default}"
assert $status -eq 0
baseplatform="$output"
run read_oci_layout_platform "$TEST_SCRATCH_DIR"/derived-"${arch:-default}"
assert $status -eq 0
derivedplatform="$output"
assert "$baseplatform" = "$derivedplatform" "for build based for ${platform:-default platform}"
done
}
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