testcase example added

Author: 0hsn

docs/04-Examples/041-http-examples.md

@@ -1,5 +1,5 @@
 ---
-title: Http spec. examples
+title: Http examples
 ---
 
 :::note

docs/04-Examples/042-testcase-examples.md

@@ -0,0 +1,48 @@
+---
+title: Testcase examples
+---
+
+:::note
+- This page should be use as reference for specification files.
+- This page is subject to change. It is requested to check this page frequently.
+:::
+
+:::note
+Case-wise more example can be found in [https://github.com/chkware/cli](https://github.com/chkware/cli/blob/main/tests/resources/storage/sample_config/bitcoin-usd-testcase.chk) repository
+:::
+
+## Testcase examples:
+
+Testcase is an experimental feature, in _`PRE_ALPHA`_ stage.
+
+
+### Testcase with in-file request
+
+```yaml
+---
+version: 'default:testcase:0.7.2'
+
+variables:
+  Name: 'Morpheus'
+  Job: 'leader'
+  Response: ~
+  Server: https://reqres.in/api/v1
+
+request:
+  url: "{$Server}/users"
+  method: POST
+  body[json]: {
+    'name': $Name,
+    'job': $Job,
+  }
+  return: ~
+
+spec:
+  execute:
+    file: ~
+    result: $Response
+
+  asserts:
+    - {type: AssertEqual, actual: $Response.code, expected: 201}
+    - {type: AssertIsMap, actual: $Response.body}
+```