Add redesigned Jolokia input plugin (#2278)

plugins/inputs/jolokia2/gatherer_test.go

@@ -0,0 +1,104 @@
+package jolokia2
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestJolokia2_makeReadRequests(t *testing.T) {
+	cases := []struct {
+		metric   Metric
+		expected []ReadRequest
+	}{
+		{
+			metric: Metric{
+				Name:  "object",
+				Mbean: "test:foo=bar",
+			},
+			expected: []ReadRequest{
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{},
+				},
+			},
+		}, {
+			metric: Metric{
+				Name:  "object_with_an_attribute",
+				Mbean: "test:foo=bar",
+				Paths: []string{"biz"},
+			},
+			expected: []ReadRequest{
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{"biz"},
+				},
+			},
+		}, {
+			metric: Metric{
+				Name:  "object_with_attributes",
+				Mbean: "test:foo=bar",
+				Paths: []string{"baz", "biz"},
+			},
+			expected: []ReadRequest{
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{"baz", "biz"},
+				},
+			},
+		}, {
+			metric: Metric{
+				Name:  "object_with_an_attribute_and_path",
+				Mbean: "test:foo=bar",
+				Paths: []string{"biz/baz"},
+			},
+			expected: []ReadRequest{
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{"biz"},
+					Path:       "baz",
+				},
+			},
+		}, {
+			metric: Metric{
+				Name:  "object_with_an_attribute_and_a_deep_path",
+				Mbean: "test:foo=bar",
+				Paths: []string{"biz/baz/fiz/faz"},
+			},
+			expected: []ReadRequest{
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{"biz"},
+					Path:       "baz/fiz/faz",
+				},
+			},
+		}, {
+			metric: Metric{
+				Name:  "object_with_attributes_and_paths",
+				Mbean: "test:foo=bar",
+				Paths: []string{"baz/biz", "faz/fiz"},
+			},
+			expected: []ReadRequest{
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{"baz"},
+					Path:       "biz",
+				},
+				ReadRequest{
+					Mbean:      "test:foo=bar",
+					Attributes: []string{"faz"},
+					Path:       "fiz",
+				},
+			},
+		},
+	}
+
+	for _, c := range cases {
+		payload := makeReadRequests([]Metric{c.metric})
+
+		assert.Equal(t, len(c.expected), len(payload), "Failing case: "+c.metric.Name)
+		for _, actual := range payload {
+			assert.Contains(t, c.expected, actual, "Failing case: "+c.metric.Name)
+		}
+	}
+}