fix: omit empty terraform test section

Author: osterman

internal/exec/stack_processor_merge.go

@@ -520,7 +520,9 @@ func mergeComponentConfigurations(atmosConfig *schema.AtmosConfiguration, opts *
 		comp[cfg.RequiredProvidersSectionName] = finalComponentRequiredProviders
 		comp[cfg.RequiredVersionSectionName] = finalComponentRequiredVersion
 		comp[cfg.HooksSectionName] = finalComponentHooks
-		comp[cfg.TestSectionName] = finalComponentTest
+		if len(finalComponentTest) > 0 {
+			comp[cfg.TestSectionName] = finalComponentTest
+		}
 		comp[cfg.GenerateSectionName] = finalComponentGenerate
 		comp[cfg.BackendTypeSectionName] = finalComponentBackendType
 		comp[cfg.BackendSectionName] = finalComponentBackend

internal/exec/stack_processor_merge_test.go

@@ -441,6 +441,20 @@ func TestMergeComponentConfigurations_TerraformTestSection(t *testing.T) {
 	assert.Equal(t, "base", testVars["base_only"])
 }
 
+func TestMergeComponentConfigurations_TerraformTestSectionOmittedWhenEmpty(t *testing.T) {
+	atmosCfg := &schema.AtmosConfiguration{}
+	opts := ComponentProcessorOptions{
+		ComponentType: cfg.TerraformComponentType,
+		Component:     "app",
+		AtmosConfig:   atmosCfg,
+	}
+	res := minimalComponentResult()
+
+	comp, err := mergeComponentConfigurations(atmosCfg, &opts, res)
+	require.NoError(t, err)
+	assert.NotContains(t, comp, cfg.TestSectionName)
+}
+
 // TestMergeComponentConfigurations_Retry covers the per-component retry merge added by
 // the component-retry feature: base → component → overrides precedence on scalars, and
 // list-append on the `conditions:` slice (the existing deep-merge semantic). It also

internal/exec/stack_processor_process_stacks_helpers_extraction.go

@@ -118,8 +118,6 @@ func extractComponentSections(opts *ComponentProcessorOptions, result *Component
 				return fmt.Errorf("%w: 'components.%s.%s.test' in the file '%s'", errUtils.ErrInvalidConfig, opts.ComponentType, opts.Component, opts.StackName)
 			}
 			result.ComponentTest = componentTest
-		} else {
-			result.ComponentTest = make(map[string]any, componentSmallMapCapacity)
 		}
 	}