Add helm_template_test.values

Author: bcsgh

helm/private/template.bzl

@@ -42,12 +42,15 @@ def _helm_template_test_impl(ctx):
         args.add("template")
         args.add(rlocationpath(pkg_info.chart, ctx.workspace_name))
 
+        for values in ctx.files.values:
+            args.add("--values", values)
+
         ctx.actions.write(
             output = args_file,
             content = args,
         )
 
-        runfiles = runfiles.merge(ctx.runfiles([
+        runfiles = runfiles.merge(ctx.runfiles(ctx.files.values + [
             args_file,
             ctx.executable._runner,
             toolchain.helm,
@@ -108,6 +111,10 @@ helm_template_test = rule(
         "template_patterns": attr.string_list_dict(
             doc = "A mapping of template paths to regex patterns required to match.",
         ),
+        "values": attr.label_list(
+            doc = "Values files to pass to `helm template --values`.",
+            allow_files = [".yml", ".yaml"],
+        ),
         "_copier": attr.label(
             cfg = "exec",
             executable = True,

tests/template_with_values/BUILD.bazel

@@ -22,4 +22,12 @@ helm_template(
 helm_template_test(
     name = "template_with_values_template_test",
     chart = ":template_with_values",
+    template_patterns = {
+        "template-with-values/templates/deployment.yaml": [
+            "  replicas: 10\\b",  # overriden by template_values.yaml
+        ],
+    },
+    values = [
+        ":template_values.yaml",
+    ],
 )