Fresh start

1 files changed, 76 insertions, 0 deletions

diff --git a/jni/ruby/test/fiddle/test_c_struct_entry.rb b/jni/ruby/test/fiddle/test_c_struct_entry.rb
new file mode 100644
index 0000000..de5449b
--- /dev/null
+++ b/jni/ruby/test/fiddle/test_c_struct_entry.rb
@@ -0,0 +1,76 @@
+begin
+  require_relative 'helper'
+  require 'fiddle/struct'
+rescue LoadError
+end
+
+module Fiddle
+  class TestCStructEntity < TestCase
+    def test_class_size
+      types = [TYPE_DOUBLE, TYPE_CHAR]
+
+      size = CStructEntity.size types
+
+      alignments = types.map { |type| PackInfo::ALIGN_MAP[type] }
+
+      expected = PackInfo.align 0, alignments[0]
+      expected += PackInfo::SIZE_MAP[TYPE_DOUBLE]
+
+      expected = PackInfo.align expected, alignments[1]
+      expected += PackInfo::SIZE_MAP[TYPE_CHAR]
+
+      expected = PackInfo.align expected, alignments.max
+
+      assert_equal expected, size
+    end
+
+    def test_class_size_with_count
+      size = CStructEntity.size([[TYPE_DOUBLE, 2], [TYPE_CHAR, 20]])
+
+      types = [TYPE_DOUBLE, TYPE_CHAR]
+      alignments = types.map { |type| PackInfo::ALIGN_MAP[type] }
+
+      expected = PackInfo.align 0, alignments[0]
+      expected += PackInfo::SIZE_MAP[TYPE_DOUBLE] * 2
+
+      expected = PackInfo.align expected, alignments[1]
+      expected += PackInfo::SIZE_MAP[TYPE_CHAR] * 20
+
+      expected = PackInfo.align expected, alignments.max
+
+      assert_equal expected, size
+    end
+
+    def test_set_ctypes
+      union = CStructEntity.malloc [TYPE_INT, TYPE_LONG]
+      union.assign_names %w[int long]
+
+      # this test is roundabout because the stored ctypes are not accessible
+      union['long'] = 1
+      union['int'] = 2
+
+      assert_equal 1, union['long']
+      assert_equal 2, union['int']
+    end
+
+    def test_aref_pointer_array
+      team = CStructEntity.malloc([[TYPE_VOIDP, 2]])
+      team.assign_names(["names"])
+      alice = Fiddle::Pointer.malloc(6)
+      alice[0, 6] = "Alice\0"
+      bob = Fiddle::Pointer.malloc(4)
+      bob[0, 4] = "Bob\0"
+      team["names"] = [alice, bob]
+      assert_equal(["Alice", "Bob"], team["names"].map(&:to_s))
+    end
+
+    def test_aref_pointer
+      user = CStructEntity.malloc([TYPE_VOIDP])
+      user.assign_names(["name"])
+      alice = Fiddle::Pointer.malloc(6)
+      alice[0, 6] = "Alice\0"
+      user["name"] = alice
+      assert_equal("Alice", user["name"].to_s)
+    end
+  end
+end if defined?(Fiddle)