Unit tests added for iaf_file (#6933)

Signed-off-by: Nik08 <nikita.mathur@progress.com>

test/unit/iaf_file_test.rb

@@ -0,0 +1,88 @@
+require "helper"
+require "inspec/iaf_file"
+
+describe "Inspec::IafFile" do
+
+  # Using progress official public key for testing
+  let(:valid_verification_key_name) { "progress-2022-05-04" }
+
+  after do
+    # delete local copy of public key which is created due to testing
+    File.delete("#{Inspec.config_dir}/keys/#{valid_verification_key_name}.pem.pub") if File.exist?("#{Inspec.config_dir}/keys/#{valid_verification_key_name}.pem.pub")
+  end
+
+  describe "Finding validation key for iaf file" do
+    before do
+      stub_request(:get, "https://raw.githubusercontent.com/inspec/inspec/main/etc/keys/garbage-keyname.pem.pub")
+        .with(
+        headers: {
+        "Accept" => "*/*",
+        "Accept-Encoding" => "gzip;q=1.0,deflate;q=0.6,identity;q=0.3",
+        "User-Agent" => "Ruby",
+        }
+      )
+        .to_return(status: 404, body: "", headers: {})
+    end
+
+    it "returns keypath when key is found" do
+      path = Inspec::IafFile.find_validation_key(valid_verification_key_name)
+      _(path).must_equal "#{Inspec.src_root}/etc/keys/#{valid_verification_key_name}.pem.pub"
+    end
+
+    it "returns error when key not found" do
+      _ { Inspec::IafFile.find_validation_key("garbage-keyname") }.must_raise(Inspec::Exceptions::ProfileValidationKeyNotFound)
+    end
+
+    it "returns error when key not passed" do
+      _ { Inspec::IafFile.find_validation_key }.must_raise(ArgumentError)
+    end
+  end
+
+  describe "Finding signing key for iaf file" do
+    it "returns error when key not found" do
+      _ { Inspec::IafFile.find_signing_key("garbage-keyname") }.must_raise(Inspec::Exceptions::ProfileSigningKeyNotFound)
+    end
+  end
+
+  describe "Fetch validation key from github" do
+    before do
+      stub_request(:get, "https://raw.githubusercontent.com/inspec/inspec/main/etc/keys/garbage-keyname.pem.pub")
+        .with(
+        headers: {
+        "Accept" => "*/*",
+        "Accept-Encoding" => "gzip;q=1.0,deflate;q=0.6,identity;q=0.3",
+        "User-Agent" => "Ruby",
+        }
+      )
+        .to_return(status: 404, body: "", headers: {})
+
+      stub_request(:get, "https://raw.githubusercontent.com/inspec/inspec/main/etc/keys/progress-2022-05-04.pem.pub")
+        .with(
+        headers: {
+        "Accept" => "*/*",
+        "Accept-Encoding" => "gzip;q=1.0,deflate;q=0.6,identity;q=0.3",
+        "User-Agent" => "Ruby",
+        }
+      )
+        .to_return(status: 200, body: "", headers: {})
+    end
+
+    it "returns true when key found" do
+      result = Inspec::IafFile.fetch_validation_key_from_github(valid_verification_key_name)
+      _(result).must_equal true
+    end
+
+    it "returns false when key not found" do
+      result = Inspec::IafFile.fetch_validation_key_from_github("garbage-keyname")
+      _(result).must_equal false
+    end
+
+  end
+
+  describe "Testing validity of an iaf file" do
+    it "validates successfully" do
+      iaf_file = Inspec::IafFile.new("test/fixtures/test-inspec-profile-0.1.0.iaf")
+      _(iaf_file.valid?).must_equal true
+    end
+  end
+end