test(deep_causality_uncertain): Increased test coverage.

Signed-off-by: Marvin Hansen <[email protected]>

Author: marvin-hansen

deep_causality_uncertain/tests/types/cache/mod.rs

@@ -4,3 +4,4 @@
  */
 #[cfg(test)]
 mod cache_tests;
+mod sampled_value_tests;

deep_causality_uncertain/tests/types/cache/sampled_value_tests.rs

@@ -0,0 +1,56 @@
+/*
+ * SPDX-License-Identifier: MIT
+ * Copyright (c) "2025" . The DeepCausality Authors and Contributors. All Rights Reserved.
+ */
+use deep_causality_uncertain::SampledValue;
+
+#[test]
+fn test_sampled_value_float_display() {
+    let val = SampledValue::Float(123.45);
+    assert_eq!(format!("{}", val), "123.45");
+}
+
+#[test]
+fn test_sampled_value_bool_display() {
+    let val_true = SampledValue::Bool(true);
+    assert_eq!(format!("{}", val_true), "true");
+
+    let val_false = SampledValue::Bool(false);
+    assert_eq!(format!("{}", val_false), "false");
+}
+
+#[test]
+fn test_sampled_value_float_debug() {
+    let val = SampledValue::Float(123.45);
+    assert_eq!(format!("{:?}", val), "Float(123.45)");
+}
+
+#[test]
+fn test_sampled_value_bool_debug() {
+    let val_true = SampledValue::Bool(true);
+    assert_eq!(format!("{:?}", val_true), "Bool(true)");
+
+    let val_false = SampledValue::Bool(false);
+    assert_eq!(format!("{:?}", val_false), "Bool(false)");
+}
+
+#[test]
+fn test_sampled_value_float_clone() {
+    let val = SampledValue::Float(123.45);
+    let cloned_val = val;
+    assert_eq!(val, cloned_val);
+}
+
+#[test]
+fn test_sampled_value_bool_clone() {
+    let val = SampledValue::Bool(true);
+    let cloned_val = val;
+    assert_eq!(val, cloned_val);
+}
+
+#[test]
+fn test_sampled_value_float_copy() {
+    let val = SampledValue::Float(123.45);
+    let copied_val = val; // Copy happens implicitly
+    assert_eq!(val, copied_val);
+}