test(recombine): add config tests

This adds a basic test plus tests for the new `combine_with` option.

operator/builtin/transformer/recombine/config_test.go

@@ -0,0 +1,94 @@
+// Copyright The OpenTelemetry Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package recombine
+
+import (
+	"testing"
+
+	"github.com/open-telemetry/opentelemetry-log-collection/operator/helper/operatortest"
+)
+
+func TestConfig(t *testing.T) {
+	cases := []operatortest.ConfigUnmarshalTest{
+		{
+			Name:      "default",
+			ExpectErr: false,
+			Expect:    defaultCfg(),
+		},
+		{
+			Name:      "custom_id",
+			ExpectErr: false,
+			Expect: func() *RecombineOperatorConfig {
+				cfg := defaultCfg()
+				cfg.OperatorID = "merge-split-lines"
+				return cfg
+			}(),
+		},
+		{
+			Name:      "combine_with_custom_string",
+			ExpectErr: false,
+			Expect: func() *RecombineOperatorConfig {
+				cfg := defaultCfg()
+				cfg.CombineWith = "ABC"
+				return cfg
+			}(),
+		},
+		{
+			Name:      "combine_with_empty_string",
+			ExpectErr: false,
+			Expect: func() *RecombineOperatorConfig {
+				cfg := defaultCfg()
+				cfg.CombineWith = ""
+				return cfg
+			}(),
+		},
+		{
+			Name:      "combine_with_tab",
+			ExpectErr: false,
+			Expect: func() *RecombineOperatorConfig {
+				cfg := defaultCfg()
+				cfg.CombineWith = "\t"
+				return cfg
+			}(),
+		},
+		{
+			Name:      "combine_with_backslash_t",
+			ExpectErr: false,
+			Expect: func() *RecombineOperatorConfig {
+				cfg := defaultCfg()
+				cfg.CombineWith = "\\t"
+				return cfg
+			}(),
+		},
+		{
+			Name:      "combine_with_multiline_string",
+			ExpectErr: false,
+			Expect: func() *RecombineOperatorConfig {
+				cfg := defaultCfg()
+				cfg.CombineWith = "line1\nLINE2"
+				return cfg
+			}(),
+		},
+	}
+	for _, tc := range cases {
+		t.Run(tc.Name, func(t *testing.T) {
+			tc.Run(t, defaultCfg())
+		})
+	}
+}
+
+func defaultCfg() *RecombineOperatorConfig {
+	return NewRecombineOperatorConfig("recombine")
+}

operator/builtin/transformer/recombine/testdata/combine_with_backslash_t.yaml

@@ -0,0 +1,2 @@
+type: recombine
+combine_with: \t

operator/builtin/transformer/recombine/testdata/combine_with_custom_string.yaml

@@ -0,0 +1,2 @@
+type: recombine
+combine_with: ABC

operator/builtin/transformer/recombine/testdata/combine_with_empty_string.yaml

@@ -0,0 +1,2 @@
+type: recombine
+combine_with:

operator/builtin/transformer/recombine/testdata/combine_with_multiline_string.yaml

@@ -0,0 +1,2 @@
+type: recombine
+combine_with: "line1\nLINE2"

operator/builtin/transformer/recombine/testdata/combine_with_tab.yaml

@@ -0,0 +1,2 @@
+type: recombine
+combine_with: "\t"

operator/builtin/transformer/recombine/testdata/custom_id.yaml

@@ -0,0 +1,2 @@
+type: recombine
+id: merge-split-lines

operator/builtin/transformer/recombine/testdata/default.yaml

@@ -0,0 +1 @@
+type: recombine