diff --git a/js/test_cases/helpers_lt/input1.json b/js/test_cases/helpers_lt/input1.json
new file mode 100644
index 0000000..bfbbd94
--- /dev/null
+++ b/js/test_cases/helpers_lt/input1.json
@@ -0,0 +1,60 @@
+{
+  "str": "master",
+  "int": 7,
+  "alpha": 21,
+  "beta": "21",
+  "null": null,
+  "true_value": true,
+  "false_value": false,
+  "array_lower": [
+    3,
+    5,
+    7
+  ],
+  "copy_array_lower": [
+    3,
+    5,
+    7
+  ],
+  "array_higher": [
+    8,
+    9
+  ],
+  "some_obj": {
+    "name": "cat"
+  },
+  "copy_some_obj": {
+    "name": "cat"
+  },
+  "other_obj": {
+    "name": "dog"
+  },
+  "array_of_some_obj": [
+    {
+      "name": "cat"
+    },
+    {
+      "name": "cat"
+    }
+  ],
+  "copy_array_of_some_obj": [
+    {
+      "name": "cat"
+    },
+    {
+      "name": "cat"
+    }
+  ],
+  "array_of_other_obj": [
+    {
+      "name": "dog"
+    },
+    {
+      "name": "dog"
+    }
+  ],
+  "array_of_strings": [
+    "cat",
+    "dog"
+  ]
+}
diff --git a/js/test_cases/helpers_lt/main.dust b/js/test_cases/helpers_lt/main.dust
new file mode 100644
index 0000000..305c3c4
--- /dev/null
+++ b/js/test_cases/helpers_lt/main.dust
@@ -0,0 +1,35 @@
+Testing helpers:{~n}
+str is {str}{~n}
+int is {int}{~n}
+alpha is {alpha}{~n}
+beta is {beta}{~n}
+{@lt key=str value="master"}str is less than "master"{:else}str is greater than or equal to "master"{/lt}{~n}
+{@lt key=str value="7"}str is less than "7"{:else}str is greater than or equal to "7"{/lt}{~n}
+{@lt key=int value="7"}int is less than "7"{:else}int is greater than or equal to "7"{/lt}{~n}
+{@lt key=int value=7}int is less than 7{:else}int is greater than or equal to 7{/lt}{~n}
+{@lt key=int value=6}int is less than 6{:else}int is greater than or equal to 6{/lt}{~n}
+{@lt key=alpha value=beta}alpha is less than beta{:else}alpha is greater than or equal to beta{/lt}{~n}
+{@lt value=beta}missing key is true{:else}missing key is false{/lt}{~n}
+{@lt value=gamma}missing key and non-existent value is true{:else}missing key and non-existent value is false{/lt}{~n}
+{@lt key=alpha}missing value is true{:else}missing value is false{/lt}{~n}
+{@lt key=gamma}missing value and non-existent key is true{:else}missing value and non-existent key is false{/lt}{~n}
+{@lt key="master" value="master"}"master" is less than "master"{:else}"master" is greater than or equal to "master"{/lt}{~n}
+{@lt key=null}null is less than a missing value{:else}null is greater than or equal to a missing value{/lt}{~n}
+{@lt key=null value=gamma}null is less than a non-existent value{:else}null is greater than or equal to a non-existent value{/lt}{~n}
+{@lt}no parameters is true{:else}no parameters is false{/lt}{~n}
+{@lt key="a" value="]"}"a" is less than "]"{:else}"a" is greater than or equal to "]"{/lt}{~n}
+{@lt key="a" value="A"}"a" is less than "A"{:else}"a" is greater than or equal to "A"{/lt}{~n}
+{@lt key="a" value="}"}"a" is less than "}"{:else}"a" is greater than or equal to "}"{/lt}{~n}
+{@lt key="☃" value="☄"}"☃" is less than "☄"{:else}"☃" is greater than or equal to "☄"{/lt}{~n}
+{@lt key=true_value value=false_value}true is less than false{:else}true is greater than or equal to false{/lt}{~n}
+{@lt key=array_lower value=array_higher}[3,5,7] is less than [8,9]{:else}[3,5,7] is greater than or equal to [8,9]{/lt}{~n}
+{@lt key=array_higher value=array_lower}[8,9] is less than [3,5,7]{:else}[8,9] is greater than or equal to [3,5,7]{/lt}{~n}
+{! non-scalar and copied value tests !}
+{@lt key=array_lower value=array_lower}array_lower is less than array_lower{:else}array_lower is greater than or equal to array_lower{/lt}{~n}
+{@lt key=array_lower value=copy_array_lower}array_lower is less than copy_array_lower{:else}array_lower is greater than or equal to copy_array_lower{/lt}{~n}
+{@lt key=some_obj value=some_obj}some_obj is less than some_obj{:else}some_obj is greater than or equal to some_obj{/lt}{~n}
+{@lt key=some_obj value=copy_some_obj}some_obj is less than copy_some_obj{:else}some_obj is greater than or equal to copy_some_obj{/lt}{~n}
+{@lt key=some_obj value=other_obj}some_obj is less than other_obj{:else}some_obj is greater than or equal to other_obj{/lt}{~n}
+{@lt key=array_of_some_obj value=array_of_some_obj}array_of_some_obj is less than array_of_some_obj{:else}array_of_some_obj is greater than or equal to array_of_some_obj{/lt}{~n}
+{@lt key=array_of_some_obj value=copy_array_of_some_obj}array_of_some_obj is less than copy_array_of_some_obj{:else}array_of_some_obj is greater than or equal to copy_array_of_some_obj{/lt}{~n}
+{@lt key=array_of_some_obj value=array_of_other_obj}array_of_some_obj is less than array_of_other_obj{:else}array_of_some_obj is greater than or equal to array_of_other_obj{/lt}{~n}
diff --git a/js/test_cases/helpers_lte/input1.json b/js/test_cases/helpers_lte/input1.json
new file mode 100644
index 0000000..bfbbd94
--- /dev/null
+++ b/js/test_cases/helpers_lte/input1.json
@@ -0,0 +1,60 @@
+{
+  "str": "master",
+  "int": 7,
+  "alpha": 21,
+  "beta": "21",
+  "null": null,
+  "true_value": true,
+  "false_value": false,
+  "array_lower": [
+    3,
+    5,
+    7
+  ],
+  "copy_array_lower": [
+    3,
+    5,
+    7
+  ],
+  "array_higher": [
+    8,
+    9
+  ],
+  "some_obj": {
+    "name": "cat"
+  },
+  "copy_some_obj": {
+    "name": "cat"
+  },
+  "other_obj": {
+    "name": "dog"
+  },
+  "array_of_some_obj": [
+    {
+      "name": "cat"
+    },
+    {
+      "name": "cat"
+    }
+  ],
+  "copy_array_of_some_obj": [
+    {
+      "name": "cat"
+    },
+    {
+      "name": "cat"
+    }
+  ],
+  "array_of_other_obj": [
+    {
+      "name": "dog"
+    },
+    {
+      "name": "dog"
+    }
+  ],
+  "array_of_strings": [
+    "cat",
+    "dog"
+  ]
+}
diff --git a/js/test_cases/helpers_lte/main.dust b/js/test_cases/helpers_lte/main.dust
new file mode 100644
index 0000000..dcf0ab5
--- /dev/null
+++ b/js/test_cases/helpers_lte/main.dust
@@ -0,0 +1,35 @@
+Testing helpers:{~n}
+str is {str}{~n}
+int is {int}{~n}
+alpha is {alpha}{~n}
+beta is {beta}{~n}
+{@lte key=str value="master"}str is less than or equal to "master"{:else}str is greater than "master"{/lte}{~n}
+{@lte key=str value="7"}str is less than or equal to "7"{:else}str is greater than "7"{/lte}{~n}
+{@lte key=int value="7"}int is less than or equal to "7"{:else}int is greater than "7"{/lte}{~n}
+{@lte key=int value=7}int is less than or equal to 7{:else}int is greater than 7{/lte}{~n}
+{@lte key=int value=6}int is less than or equal to 6{:else}int is greater than 6{/lte}{~n}
+{@lte key=alpha value=beta}alpha is less than or equal to beta{:else}alpha is greater than beta{/lte}{~n}
+{@lte value=beta}missing key is true{:else}missing key is false{/lte}{~n}
+{@lte value=gamma}missing key and non-existent value is true{:else}missing key and non-existent value is false{/lte}{~n}
+{@lte key=alpha}missing value is true{:else}missing value is false{/lte}{~n}
+{@lte key=gamma}missing value and non-existent key is true{:else}missing value and non-existent key is false{/lte}{~n}
+{@lte key="master" value="master"}"master" is less than or equal to "master"{:else}"master" is greater than "master"{/lte}{~n}
+{@lte key=null}null is less than or equal to a missing value{:else}null is greater than a missing value{/lte}{~n}
+{@lte key=null value=gamma}null is less than or equal to a non-existent value{:else}null is greater than a non-existent value{/lte}{~n}
+{@lte}no parameters is true{:else}no parameters is false{/lte}{~n}
+{@lte key="a" value="]"}"a" is less than or equal to "]"{:else}"a" is greater than "]"{/lte}{~n}
+{@lte key="a" value="A"}"a" is less than or equal to "A"{:else}"a" is greater than "A"{/lte}{~n}
+{@lte key="a" value="}"}"a" is less than or equal to "}"{:else}"a" is greater than "}"{/lte}{~n}
+{@lte key="☃" value="☄"}"☃" is less than or equal to "☄"{:else}"☃" is greater than "☄"{/lte}{~n}
+{@lte key=true_value value=false_value}true is less than or equal to false{:else}true is greater than false{/lte}{~n}
+{@lte key=array_lower value=array_higher}[3,5,7] is less than or equal to [8,9]{:else}[3,5,7] is greater than [8,9]{/lte}{~n}
+{@lte key=array_higher value=array_lower}[8,9] is less than or equal to [3,5,7]{:else}[8,9] is greater than [3,5,7]{/lte}{~n}
+{! non-scalar and copied value tests !}
+{@lte key=array_lower value=array_lower}array_lower is less than or equal to array_lower{:else}array_lower is greater than array_lower{/lte}{~n}
+{@lte key=array_lower value=copy_array_lower}array_lower is less than or equal to copy_array_lower{:else}array_lower is greater than copy_array_lower{/lte}{~n}
+{@lte key=some_obj value=some_obj}some_obj is less than or equal to some_obj{:else}some_obj is greater than some_obj{/lte}{~n}
+{@lte key=some_obj value=copy_some_obj}some_obj is less than or equal to copy_some_obj{:else}some_obj is greater than copy_some_obj{/lte}{~n}
+{@lte key=some_obj value=other_obj}some_obj is less than or equal to other_obj{:else}some_obj is greater than other_obj{/lte}{~n}
+{@lte key=array_of_some_obj value=array_of_some_obj}array_of_some_obj is less than or equal to array_of_some_obj{:else}array_of_some_obj is greater than array_of_some_obj{/lte}{~n}
+{@lte key=array_of_some_obj value=copy_array_of_some_obj}array_of_some_obj is less than or equal to copy_array_of_some_obj{:else}array_of_some_obj is greater than copy_array_of_some_obj{/lte}{~n}
+{@lte key=array_of_some_obj value=array_of_other_obj}array_of_some_obj is less than or equal to array_of_other_obj{:else}array_of_some_obj is greater than array_of_other_obj{/lte}{~n}