Fix nested template panic

internal/config/configfile_test.go

@@ -47,6 +47,10 @@ plugins:
     cmd: echo
     pipe: true
 
+templates:
+  foo:
+    url: file:///tmp/foo.t
+
 pluginTimeout: 2s
 `
 	expected = &Config{
@@ -72,6 +76,7 @@ pluginTimeout: 2s
 		Plugins: map[string]PluginConfig{
 			"foo": {Cmd: "echo", Pipe: true},
 		},
+		Templates:     Templates{"foo": DataSource{URL: mustURL("file:///tmp/foo.t")}},
 		PluginTimeout: 2 * time.Second,
 	}
 

internal/config/types.go

@@ -21,8 +21,10 @@ type Templates map[string]DataSource
 // UnmarshalYAML - satisfy the yaml.Umarshaler interface
 func (t *Templates) UnmarshalYAML(value *yaml.Node) error {
 	// first attempt to unmarshal as a map[string]DataSource
-	err := value.Decode(map[string]DataSource(*t))
+	m := map[string]DataSource{}
+	err := value.Decode(m)
 	if err == nil {
+		*t = m
 		return nil
 	}
 

internal/tests/integration/config_test.go

@@ -232,3 +232,31 @@ suppressEmpty: true
 	_, err = os.Stat(tmpDir.Join("missing"))
 	assert.Equal(t, true, os.IsNotExist(err))
 }
+
+func TestConfig_ConfigTemplatesSupportsMap(t *testing.T) {
+	tmpDir := setupConfigTest(t)
+
+	writeConfig(t, tmpDir, `in: '{{ template "t1" (dict "testValue" "12345") }}'
+templates:
+  t1:
+    url: t1.tmpl
+`)
+	writeFile(t, tmpDir, "t1.tmpl", `{{ .testValue }}`)
+
+	o, e, err := cmd(t).withDir(tmpDir.Path()).run()
+	assertSuccess(t, o, e, err, "12345")
+}
+
+func TestConfig_ConfigTemplatesSupportsArray(t *testing.T) {
+	tmpDir := setupConfigTest(t)
+
+	// TODO: remove this test once the array format is no longer supported
+	writeConfig(t, tmpDir, `in: '{{ template "t1" (dict "testValue" "12345") }}'
+templates:
+  - t1=t1.tmpl
+`)
+	writeFile(t, tmpDir, "t1.tmpl", `{{ .testValue }}`)
+
+	o, e, err := cmd(t).withDir(tmpDir.Path()).run()
+	assertSuccess(t, o, e, err, "12345")
+}