hscript: Allow multiple inheritance

This allows a HorizonScript to inherit from multiple files.  Files are parsed
in a system-defined, unspecified order, but all scripts of a given depth are
guaranteed to be parsed before the next depth.

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/spec/validator_spec.rb b/tests/spec/validator_spec.rb
index 282d7ca..3a491a0 100644
--- a/tests/spec/validator_spec.rb
+++ b/tests/spec/validator_spec.rb
@@ -80,6 +80,35 @@ RSpec.describe 'HorizonScript validation', :type => :aruba do
             run_validate
             expect(last_command_started).to have_output(/error: .*length/)
         end
+        context "inheritance" do
+            it "supports basic single inheritance" do
+                use_fixture '0232-inherit-basic.installfile'
+                run_validate
+                expect(last_command_started).to have_output(PARSER_SUCCESS)
+                expect(last_command_started).to have_output(VALIDATOR_SUCCESS)
+            end
+            it "requires inherited files to exist" do
+                use_fixture '0233-inherit-missing.installfile'
+                run_validate
+                expect(last_command_started).to have_output(/error: .*non-existent/)
+            end
+            it "doesn't get stuck in a loop" do
+                use_fixture '0264-inherit-test-loop.installfile'
+                run_validate
+                expect(last_command_started).to have_output(/error: .*already inherited/)
+            end
+            it "supports relative paths" do
+                use_fixture '0236-inherit-relative.installfile'
+                run_validate
+                expect(last_command_started).to have_output(PARSER_SUCCESS)
+                expect(last_command_started).to have_output(VALIDATOR_SUCCESS)
+            end
+            it "still knows incomplete files are incomplete" do
+                use_fixture '0237-inherit-incomplete.installfile'
+                run_validate
+                expect(last_command_started).to have_output(/error: expected/)
+            end
+        end
         context "required keys" do
             # Runner.Validate.Required.
             # Runner.Validate.network.