Add explicit buffer cleanup in specs

.github/workflows/build.yml

@@ -14,12 +14,12 @@ jobs:
     name: ${{ matrix.os }} ruby-${{ matrix.ruby }}
     strategy:
       matrix:
-        os: [ ubuntu-20.04, macos-11 ]
-        ruby: [ 2.5, 2.6, 2.7, 3.0, 3.1, 3.2 ]
+        os: [ ubuntu-22.04, macos-15 ]
+        ruby: [ 2.7, 3.0, 3.1, 3.2, 3.3, 3.4, 4.0 ]
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
@@ -29,29 +29,25 @@ jobs:
           bundler-cache: true
 
       - name: Setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v6.3.0
         with:
-          go-version: '1.20.5'
+          go-version: '1.24'
 
       - name: Build Linux
-        if: matrix.os == 'ubuntu-20.04'
+        if: matrix.os == 'ubuntu-22.04'
         shell: bash
         run: |
-          BUILD_DIR="tmp"
-          mkdir $BUILD_DIR
-          cp -R spec/support/libcobhandemo/* $BUILD_DIR
-          cd tmp
-          GOOS=linux GOARCH=amd64 go build -buildmode=c-shared -ldflags='-s -w' -o libcobhandemo-x64.so libcobhandemo.go
+          mkdir -p tmp
+          cd spec/support/libcobhandemo
+          CGO_ENABLED=1 GOOS=linux GOARCH=amd64 go build -buildmode=c-shared -ldflags='-s -w' -o ../../../tmp/libcobhandemo-x64.so .
 
       - name: Build Darwin
-        if: matrix.os == 'macos-11'
+        if: matrix.os == 'macos-15'
         shell: bash
         run: |
-          BUILD_DIR="tmp"
-          mkdir $BUILD_DIR
-          cp -R spec/support/libcobhandemo/* $BUILD_DIR
-          cd tmp
-          GOOS=darwin GOARCH=amd64 go build -buildmode=c-shared -ldflags='-s -w' -o libcobhandemo-x64.dylib libcobhandemo.go
+          mkdir -p tmp
+          cd spec/support/libcobhandemo
+          CGO_ENABLED=1 GOOS=darwin GOARCH=arm64 go build -buildmode=c-shared -ldflags='-s -w' -o ../../../tmp/libcobhandemo-arm64.dylib .
 
       - name: Run specs
         run: |
@@ -67,16 +63,16 @@ jobs:
     strategy:
       matrix:
         include:
-          - { os: ubuntu-20.04, ruby: 3.2 }
+          - { os: ubuntu-22.04, ruby: 3.2 }
       fail-fast: false
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v6.3.0
         with:
-          go-version: '1.20.5'
+          go-version: '1.24'
 
       - name: Install OS dependencies
         shell: bash
@@ -87,11 +83,9 @@ jobs:
       - name: Build Linux ARM64
         shell: bash
         run: |
-          BUILD_DIR="tmp"
-          mkdir $BUILD_DIR
-          cp -R spec/support/libcobhandemo/* $BUILD_DIR
-          cd tmp
-          CGO_ENABLED=1 GOOS=linux GOARCH=arm64 CC=aarch64-linux-gnu-gcc go build -v -buildmode=c-shared -ldflags='-s -w' -o libcobhandemo-arm64.so libcobhandemo.go
+          mkdir -p tmp
+          cd spec/support/libcobhandemo
+          CGO_ENABLED=1 GOOS=linux GOARCH=arm64 CC=aarch64-linux-gnu-gcc go build -v -buildmode=c-shared -ldflags='-s -w' -o ../../../tmp/libcobhandemo-arm64.so .
 
       - name: Run specs and rubocop checks
         shell: bash

.rubocop.yml

@@ -29,3 +29,6 @@ Style/BlockDelimiters:
 
 Style/HashAsLastArrayItem:
   Enabled: false
+
+Style/EmptyClassDefinition:
+  Enabled: false

Gemfile

@@ -5,6 +5,7 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in cobhan.gemspec
 gemspec
 
+gem 'json', '~> 2.7.0' # Pin to avoid ARM64 compilation issues with 2.19.0
 gem 'rake', '~> 13.0'
 gem 'rspec', '~> 3.10.0'
 gem 'rubocop', '~> 1.7'

spec/cobhan_spec.rb

@@ -65,7 +65,7 @@ def self.add_int32(first, second)
       expect {
         CobhanApp.add_int32(1, 2)
       }.to raise_error(NoMethodError) do |e|
-        expect(e.message).to include("undefined method `addInt32'")
+        expect(e.message).to include("undefined method `addInt32'").or include("undefined method 'addInt32'")
       end
 
       CobhanApp.load_library(
@@ -83,6 +83,8 @@ def self.add_int32(first, second)
       expect(memory_pointer.get_int32(0)).to eq(input.bytesize)
       expect(memory_pointer.get_int32(Cobhan::SIZEOF_INT32)).to eq(0)
       expect(memory_pointer.get_bytes(Cobhan::BUFFER_HEADER_SIZE, input.bytesize)).to eq(input)
+    ensure
+      memory_pointer&.free
     end
   end
 
@@ -92,6 +94,8 @@ def self.add_int32(first, second)
       output = CobhanApp.cbuffer_to_string(memory_pointer)
       expect(output).to eq(input)
       expect(output.encoding).to eq(Encoding::UTF_8)
+    ensure
+      memory_pointer&.free
     end
 
     it 'returns a string from C buffer pointing to a temp file' do
@@ -112,6 +116,8 @@ def self.add_int32(first, second)
       output = CobhanApp.cbuffer_to_string(out_buffer)
       expect(output).to eq('A' * 2048)
       expect(output.encoding).to eq(Encoding::UTF_8)
+    ensure
+      [in_buffer, out_buffer].compact.each(&:free)
     end
   end
 
@@ -131,6 +137,8 @@ def self.add_int32(first, second)
 
       expect(CobhanApp.temp_to_string(buffer_ptr, length)).to eq('content')
       expect(File.exist?(file.path)).to eq(false)
+    ensure
+      buffer_ptr&.free
     end
   end
 
@@ -140,6 +148,8 @@ def self.add_int32(first, second)
       expect(memory_pointer.get_int32(0)).to eq(10)
       expect(memory_pointer.get_int32(Cobhan::SIZEOF_INT32)).to eq(0)
       expect(memory_pointer.size).to eq(10 + Cobhan::BUFFER_HEADER_SIZE)
+    ensure
+      memory_pointer&.free
     end
   end
 
@@ -149,6 +159,8 @@ def self.add_int32(first, second)
       memory_pointer = CobhanApp.int_to_buffer(number)
       expect(memory_pointer.get_int64(0)).to eq(number)
       expect(memory_pointer.size).to eq(Cobhan::SIZEOF_INT32 * 2)
+    ensure
+      memory_pointer&.free
     end
   end
 
@@ -157,6 +169,8 @@ def self.add_int32(first, second)
       number = (2**63) - 1
       memory_pointer = CobhanApp.int_to_buffer(number)
       expect(CobhanApp.buffer_to_int(memory_pointer)).to eq(number)
+    ensure
+      memory_pointer&.free
     end
   end
 end

spec/support/cobhan_module.rb

@@ -39,6 +39,8 @@ def to_upper(input)
     raise 'Failed to convert toUpper' if result.negative?
 
     FFI.cbuffer_to_string(out_buffer)
+  ensure
+    [in_buffer, out_buffer].compact.each(&:free)
   end
 
   def filter_json(json_input, disallowed_value)
@@ -50,6 +52,8 @@ def filter_json(json_input, disallowed_value)
     raise 'Failed to filter json' if result.negative?
 
     FFI.cbuffer_to_string(json_output_buffer)
+  ensure
+    [json_input_buffer, disallowed_value_buffer, json_output_buffer].compact.each(&:free)
   end
 
   def base64_encode(input)
@@ -60,6 +64,8 @@ def base64_encode(input)
     raise 'Failed to base64 encode' if result.negative?
 
     FFI.cbuffer_to_string(output_buffer)
+  ensure
+    [input_buffer, output_buffer].compact.each(&:free)
   end
 
   def sleep_test(seconds)