Add tests for declaration-only enums.

* tests/data/test-abidiff-exit/test-decl-enum-report-2.txt: Add
	new test reference output.
	* tests/data/test-abidiff-exit/test-decl-enum-report-3.txt: Likewise.
	* tests/data/test-abidiff-exit/test-decl-enum-report.txt: Likewise.
	* tests/data/test-abidiff-exit/test-decl-enum-v{0,1}.c: Add source
	code for the binaries below.
	* tests/data/test-abidiff-exit/test-decl-enum-v{0,1}.o: Add new
	binary test inputs.
	* tests/data/Makefile.am: Add the new files above to source
	distribution.
	* tests/test-abidiff-exit.cc: Add the test inputs above to the
	test harness.

Signed-off-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Dodji Seketeli <dodji@redhat.com>

tests/data/Makefile.am

@@ -158,6 +158,13 @@ test-abidiff-exit/test-fun-param-v0.o \
 test-abidiff-exit/test-fun-param-v1.abi \
 test-abidiff-exit/test-fun-param-v1.c \
 test-abidiff-exit/test-fun-param-v1.o \
+test-abidiff-exit/test-decl-enum-v0.c \
+test-abidiff-exit/test-decl-enum-v0.o \
+test-abidiff-exit/test-decl-enum-v1.c \
+test-abidiff-exit/test-decl-enum-v1.o \
+test-abidiff-exit/test-decl-enum-report.txt \
+test-abidiff-exit/test-decl-enum-report-2.txt \
+test-abidiff-exit/test-decl-enum-report-3.txt \
 \
 test-diff-dwarf/test0-v0.cc		\
 test-diff-dwarf/test0-v0.o			\

tests/data/test-abidiff-exit/test-decl-enum-report-2.txt

@@ -0,0 +1,3 @@
+Functions changes summary: 0 Removed, 0 Changed (2 filtered out), 0 Added functions
+Variables changes summary: 0 Removed, 0 Changed, 0 Added variable
+

tests/data/test-abidiff-exit/test-decl-enum-report-3.txt

@@ -0,0 +1,5 @@
+Leaf changes summary: 0 artifact changed
+Changed leaf types summary: 0 leaf type changed
+Removed/Changed/Added functions summary: 0 Removed, 0 Changed, 0 Added function
+Removed/Changed/Added variables summary: 0 Removed, 0 Changed, 0 Added variable
+

tests/data/test-abidiff-exit/test-decl-enum-report.txt

@@ -0,0 +1,17 @@
+Functions changes summary: 0 Removed, 2 Changed, 0 Added functions
+Variables changes summary: 0 Removed, 0 Changed, 0 Added variable
+
+2 functions with some indirect sub-type change:
+
+  [C] 'function void reg1(const embodied_enum*)' at test-decl-enum-v1.c:4:1 has some indirect sub-type changes:
+    parameter 1 of type 'const embodied_enum*' has sub-type changes:
+      in pointed to type 'const embodied_enum':
+        in unqualified underlying type 'enum embodied_enum' at test-decl-enum-v1.c:1:1:
+          enum type enum embodied_enum was a declaration-only enum type and is now a defined enum type
+
+  [C] 'function void reg2(const disembodied_enum*)' at test-decl-enum-v1.c:5:1 has some indirect sub-type changes:
+    parameter 1 of type 'const disembodied_enum*' has sub-type changes:
+      in pointed to type 'const disembodied_enum':
+        in unqualified underlying type 'enum disembodied_enum':
+          enum type enum disembodied_enum was a defined enum type and is now a declaration-only enum type
+

tests/data/test-abidiff-exit/test-decl-enum-v0.c

@@ -0,0 +1,5 @@
+enum embodied_enum;
+enum disembodied_enum { X };
+
+void reg1(const enum embodied_enum * foo) { (void)foo; }
+void reg2(const enum disembodied_enum * foo) { (void)foo; }

tests/data/test-abidiff-exit/test-decl-enum-v1.c

@@ -0,0 +1,5 @@
+enum embodied_enum { Y };
+enum disembodied_enum;
+
+void reg1(const enum embodied_enum * foo) { (void)foo; }
+void reg2(const enum disembodied_enum * foo) { (void)foo; }

tests/test-abidiff-exit.cc

@@ -212,6 +212,33 @@ InOutSpec in_out_specs[] =
     "data/test-abidiff-exit/test-fun-param-report.txt",
     "output/test-abidiff-exit/test-fun-param-report.txt"
   },
+  {
+    "data/test-abidiff-exit/test-decl-enum-v0.o",
+    "data/test-abidiff-exit/test-decl-enum-v1.o",
+    "",
+    "--harmless",
+    abigail::tools_utils::ABIDIFF_ABI_CHANGE,
+    "data/test-abidiff-exit/test-decl-enum-report.txt",
+    "output/test-abidiff-exit/test-decl-enum-report.txt"
+  },
+  {
+    "data/test-abidiff-exit/test-decl-enum-v0.o",
+    "data/test-abidiff-exit/test-decl-enum-v1.o",
+    "",
+    "",
+    abigail::tools_utils::ABIDIFF_OK,
+    "data/test-abidiff-exit/test-decl-enum-report-2.txt",
+    "output/test-abidiff-exit/test-decl-enum-report-2.txt"
+  },
+  {
+    "data/test-abidiff-exit/test-decl-enum-v0.o",
+    "data/test-abidiff-exit/test-decl-enum-v1.o",
+    "",
+    "--leaf-changes-only",
+    abigail::tools_utils::ABIDIFF_OK,
+    "data/test-abidiff-exit/test-decl-enum-report-3.txt",
+    "output/test-abidiff-exit/test-decl-enum-report-3.txt"
+  },
   {0, 0, 0 ,0,  abigail::tools_utils::ABIDIFF_OK, 0, 0}
 };