first tests for ci (#16)

.bazelci/config.yaml

@@ -1,8 +1,11 @@
 ---
 platforms:
+  ubuntu1804:
+    build_targets:
+    - "//examples:tests"
   ubuntu1604:
     build_targets:
-    - "//examples/..."
+    - "//examples:tests"
   macos:
     build_targets:
-    - "//examples/..."
+    - "//examples:tests"

examples/BUILD

@@ -0,0 +1,7 @@
+test_suite(
+    name = "tests",
+    tests = [
+        "//examples/cmake:test_libpng",
+        "//examples/cmake:test_zlib",
+    ],
+)

examples/cmake/BUILD

@@ -15,10 +15,8 @@ cmake_external(
 )
 
 cc_binary(
-    name = "libpng_test",
-    srcs = ["libpng_test.cpp"],
-    args = ["$(location bazel-icon-transparent.png) out.png"],
-    data = ["bazel-icon-transparent.png"],
+    name = "libpng_usage_example",
+    srcs = ["libpng_usage_example.cpp"],
     deps = [
         ":libpng",
         ":libz",
@@ -30,3 +28,18 @@ cc_binary(
     srcs = ["zlib-example.cpp"],
     deps = [":libz"],
 )
+
+sh_test(
+    name = "test_zlib",
+    srcs = ["test_zlib.sh"],
+    data = [":zlib_usage_example"],
+    visibility = ["//:__pkg__"]
+)
+
+sh_test(
+    name = "test_libpng",
+    srcs = ["test_libpng.sh"],
+    data = [":libpng_usage_example", "bazel-icon-transparent.png",],
+    args = ["$(location bazel-icon-transparent.png) out.png"],
+    visibility = ["//:__pkg__"]
+)

examples/cmake/test_libpng.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+${TEST_SRCDIR}/rules_foreign_cc/examples/cmake/libpng_usage_example $@

examples/cmake/test_zlib.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+${TEST_SRCDIR}/rules_foreign_cc/examples/cmake/zlib_usage_example