Launch the desired Java version

1 files changed, 42 insertions, 0 deletions

diff --git a/spec/integration/java/maven_spec.rb b/spec/integration/java/maven_spec.rb
index 85637b2..1e0e4e4 100644
--- a/spec/integration/java/maven_spec.rb
+++ b/spec/integration/java/maven_spec.rb
@@ -100,4 +100,46 @@ RSpec.describe "maven" do
     specify { expect(report.dependency_names).to match_array(['jackson-core']) }
     specify { expect(report.licenses_for('jackson-core')).to match_array(['Apache-2.0']) }
   end
+
+  context "when specifying the version of java using environment variables" do
+    let(:output_file) { Pathname.new(runner.project_path.join('output.txt')) }
+
+    before do
+      runner.add_file('custom.sh') do
+        <<~SCRIPT
+        #!/bin/bash -l
+
+        java -version 2> '#{output_file}'
+        SCRIPT
+      end
+    end
+
+    it 'prioritizes `LM_JAVA_VERSION` over the `ASDF_JAVA_VERSION`' do
+      runner.scan(env: {
+        'ASDF_JAVA_VERSION' => 'adopt-openjdk-11.0.7+10',
+        'LM_JAVA_VERSION' => '8',
+        'SETUP_CMD' => 'bash custom.sh'
+      })
+
+      expect(output_file).to exist
+      expect(output_file.read).to include('openjdk version "1.8.0_242"')
+    end
+
+    it 'reads the ASDF_JAVA_VERSION' do
+      runner.scan(env: {
+        'ASDF_JAVA_VERSION' => 'adopt-openjdk-11.0.7+10',
+        'SETUP_CMD' => 'bash custom.sh'
+      })
+
+      expect(output_file).to exist
+      expect(output_file.read).to include('openjdk version "11.0.7"')
+    end
+
+    it 'defaults to java 8' do
+      runner.scan(env: { 'SETUP_CMD' => 'bash custom.sh' })
+
+      expect(output_file).to exist
+      expect(output_file.read).to include('openjdk version "1.8.0_242"')
+    end
+  end
 end