TestMergeObservabilityConfigs verifies that multiple observability JSON blobs are merged into a single config with all OTLP endpoints in array form, with deduplication.
(t *testing.T)
| 528 | // TestMergeObservabilityConfigs verifies that multiple observability JSON blobs are |
| 529 | // merged into a single config with all OTLP endpoints in array form, with deduplication. |
| 530 | func TestMergeObservabilityConfigs(t *testing.T) { |
| 531 | t.Run("empty slice returns empty string", func(t *testing.T) { |
| 532 | got := mergeObservabilityConfigs(nil) |
| 533 | assert.Empty(t, got, "nil configs should return empty string") |
| 534 | |
| 535 | got = mergeObservabilityConfigs([]string{}) |
| 536 | assert.Empty(t, got, "empty configs should return empty string") |
| 537 | }) |
| 538 | |
| 539 | t.Run("single import with string endpoint", func(t *testing.T) { |
| 540 | configs := []string{`{"otlp":{"endpoint":"https://traces.example.com:4317"}}`} |
| 541 | got := mergeObservabilityConfigs(configs) |
| 542 | require.NotEmpty(t, got, "should produce non-empty result") |
| 543 | assert.Contains(t, got, `"https://traces.example.com:4317"`, "should include the endpoint URL") |
| 544 | }) |
| 545 | |
| 546 | t.Run("two imports with distinct string endpoints", func(t *testing.T) { |
| 547 | configs := []string{ |
| 548 | `{"otlp":{"endpoint":"https://primary.example.com:4317"}}`, |
| 549 | `{"otlp":{"endpoint":"https://secondary.example.com:4317"}}`, |
| 550 | } |
| 551 | got := mergeObservabilityConfigs(configs) |
| 552 | require.NotEmpty(t, got, "should produce merged result") |
| 553 | assert.Contains(t, got, "primary.example.com", "should include first endpoint") |
| 554 | assert.Contains(t, got, "secondary.example.com", "should include second endpoint") |
| 555 | }) |
| 556 | |
| 557 | t.Run("two imports with same URL deduplicates", func(t *testing.T) { |
| 558 | configs := []string{ |
| 559 | `{"otlp":{"endpoint":"https://traces.example.com:4317"}}`, |
| 560 | `{"otlp":{"endpoint":"https://traces.example.com:4317"}}`, |
| 561 | } |
| 562 | got := mergeObservabilityConfigs(configs) |
| 563 | require.NotEmpty(t, got, "should produce merged result") |
| 564 | // The URL should appear only once in the output |
| 565 | count := strings.Count(got, "traces.example.com") |
| 566 | assert.Equal(t, 1, count, "duplicate URL should appear only once") |
| 567 | }) |
| 568 | |
| 569 | t.Run("mix of string and object notation", func(t *testing.T) { |
| 570 | configs := []string{ |
| 571 | `{"otlp":{"endpoint":"https://primary.example.com:4317"}}`, |
| 572 | `{"otlp":{"endpoint":{"url":"https://secondary.example.com:4317","headers":{"X-Key":"val"}}}}`, |
| 573 | } |
| 574 | got := mergeObservabilityConfigs(configs) |
| 575 | require.NotEmpty(t, got, "should produce merged result") |
| 576 | assert.Contains(t, got, "primary.example.com", "should include first endpoint (string form)") |
| 577 | assert.Contains(t, got, "secondary.example.com", "should include second endpoint (object form)") |
| 578 | assert.Contains(t, got, "X-Key", "should preserve headers from object form") |
| 579 | }) |
| 580 | |
| 581 | t.Run("import with array notation contributes all endpoints", func(t *testing.T) { |
| 582 | configs := []string{ |
| 583 | `{"otlp":{"endpoint":[{"url":"https://a.example.com:4317"},{"url":"https://b.example.com:4317"}]}}`, |
| 584 | } |
| 585 | got := mergeObservabilityConfigs(configs) |
| 586 | require.NotEmpty(t, got, "should produce merged result") |
| 587 | assert.Contains(t, got, "a.example.com", "should include first array endpoint") |
nothing calls this directly
no test coverage detected