diff --git a/Library/Homebrew/test/formula_spec.rb b/Library/Homebrew/test/formula_spec.rb
index 170af26b1..b76211595 100644
--- a/Library/Homebrew/test/formula_spec.rb
+++ b/Library/Homebrew/test/formula_spec.rb
@@ -1387,92 +1387,4 @@ describe Formula do
       end
     end
   end
-
-  describe "#uses_from_macos" do
-    context 'on Linux' do
-      before do
-        allow(OS).to receive(:mac?).and_return(false)
-      end
-
-      it "acts like #depends_on" do
-        f = formula "foo" do
-          url "foo-1.0"
-
-          uses_from_macos("foo")
-        end
-
-        expect(f.class.stable.deps.first.name).to eq("foo")
-        expect(f.class.devel.deps.first.name).to eq("foo")
-        expect(f.class.head.deps.first.name).to eq("foo")
-      end
-
-      it "ignores MacOS specifications" do
-        f = formula "foo" do
-          url "foo-1.0"
-
-          uses_from_macos("foo", after: :mojave)
-        end
-
-        expect(f.class.stable.deps.first.name).to eq("foo")
-        expect(f.class.devel.deps.first.name).to eq("foo")
-        expect(f.class.head.deps.first.name).to eq("foo")
-      end
-    end
-
-    context 'on MacOS' do
-      before do
-        sierra_os_version = OS::Mac::Version.from_symbol(:sierra)
-
-        allow(OS).to receive(:mac?).and_return(true)
-        allow(OS::Mac).to receive(:version).and_return(OS::Mac::Version.new(sierra_os_version))
-      end
-
-      it "doesn't adds a dependency if it doesn't meet OS version requirements" do
-        f = formula 'foo' do
-          url 'foo-1.0'
-
-          uses_from_macos('foo', after: :high_sierra)
-          uses_from_macos('bar', before: :el_capitan)
-        end
-
-        expect(f.class.stable.deps).to be_empty
-        expect(f.class.devel.deps).to be_empty
-        expect(f.class.head.deps).to be_empty
-      end
-
-      it 'allows specifying dependencies after certain version' do
-        f = formula 'foo' do
-          url 'foo-1.0'
-
-          uses_from_macos('foo', after: :el_capitan)
-        end
-
-        expect(f.class.stable.deps.first.name).to eq('foo')
-        expect(f.class.devel.deps.first.name).to eq('foo')
-        expect(f.class.head.deps.first.name).to eq('foo')
-      end
-
-      it 'allows specifying dependencies before certain version' do
-        f = formula 'foo' do
-          url 'foo-1.0'
-
-          uses_from_macos('foo', before: :high_sierra)
-        end
-
-        expect(f.class.stable.deps.first.name).to eq('foo')
-        expect(f.class.devel.deps.first.name).to eq('foo')
-        expect(f.class.head.deps.first.name).to eq('foo')
-      end
-
-      it 'raises an error if passing invalid OS versions' do
-        expect {
-          formula 'foo' do
-            url 'foo-1.0'
-
-            uses_from_macos('foo', after: 'bar', before: :mojave)
-          end
-        }.to raise_error(ArgumentError, 'unknown version "bar"')
-      end
-    end
-  end
 end
diff --git a/Library/Homebrew/test/os/linux/formula_spec.rb b/Library/Homebrew/test/os/linux/formula_spec.rb
new file mode 100644
index 000000000..16bc858d9
--- /dev/null
+++ b/Library/Homebrew/test/os/linux/formula_spec.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+require "formula"
+
+describe Formula do
+  describe "#uses_from_macos" do
+    before do
+      allow(OS).to receive(:mac?).and_return(false)
+    end
+
+    it "acts like #depends_on" do
+      f = formula "foo" do
+        url "foo-1.0"
+
+        uses_from_macos("foo")
+      end
+
+      expect(f.class.stable.deps.first.name).to eq("foo")
+      expect(f.class.devel.deps.first.name).to eq("foo")
+      expect(f.class.head.deps.first.name).to eq("foo")
+    end
+
+    it "ignores OS version specifications" do
+      f = formula "foo" do
+        url "foo-1.0"
+
+        uses_from_macos("foo", after: :mojave)
+      end
+
+      expect(f.class.stable.deps.first.name).to eq("foo")
+      expect(f.class.devel.deps.first.name).to eq("foo")
+      expect(f.class.head.deps.first.name).to eq("foo")
+    end
+  end
+end
diff --git a/Library/Homebrew/test/os/mac/formula_spec.rb b/Library/Homebrew/test/os/mac/formula_spec.rb
new file mode 100644
index 000000000..a0759817a
--- /dev/null
+++ b/Library/Homebrew/test/os/mac/formula_spec.rb
@@ -0,0 +1,61 @@
+# frozen_string_literal: true
+
+require "formula"
+
+describe Formula do
+  describe "#uses_from_macos" do
+    before do
+      sierra_os_version = OS::Mac::Version.from_symbol(:sierra)
+
+      allow(OS).to receive(:mac?).and_return(true)
+      allow(OS::Mac).to receive(:version).and_return(OS::Mac::Version.new(sierra_os_version))
+    end
+
+    it "doesn't adds a dependency if it doesn't meet OS version requirements" do
+      f = formula "foo" do
+        url "foo-1.0"
+
+        uses_from_macos("foo", after: :high_sierra)
+        uses_from_macos("bar", before: :el_capitan)
+      end
+
+      expect(f.class.stable.deps).to be_empty
+      expect(f.class.devel.deps).to be_empty
+      expect(f.class.head.deps).to be_empty
+    end
+
+    it "allows specifying dependencies after certain version" do
+      f = formula "foo" do
+        url "foo-1.0"
+
+        uses_from_macos("foo", after: :el_capitan)
+      end
+
+      expect(f.class.stable.deps.first.name).to eq("foo")
+      expect(f.class.devel.deps.first.name).to eq("foo")
+      expect(f.class.head.deps.first.name).to eq("foo")
+    end
+
+    it "allows specifying dependencies before certain version" do
+      f = formula "foo" do
+        url "foo-1.0"
+
+        uses_from_macos("foo", before: :high_sierra)
+      end
+
+      expect(f.class.stable.deps.first.name).to eq("foo")
+      expect(f.class.devel.deps.first.name).to eq("foo")
+      expect(f.class.head.deps.first.name).to eq("foo")
+    end
+
+    it "raises an error if passing invalid OS versions" do
+      expect {
+        formula "foo" do
+          url "foo-1.0"
+
+          uses_from_macos("foo", after: "bar", before: :mojave)
+        end
+      }.to raise_error(ArgumentError, 'unknown version "bar"')
+    end
+  end
+end