chore: Add more tests for common helpers (#128)

* Update tests

* Update tests

* Update tests

* Update tests

* Update tests

* Update tests

tests/test-common.nu

@@ -1,20 +1,57 @@
 
 use std/assert
 
-use ../nu/common.nu [compare-ver]
+use ../nu/common.nu [compare-ver, 'from env', is-installed, has-ref, git-check]
 
 #[test]
-def 'v1.0.0 is greater than v0.1.0' [] {
-  assert equal (compare-ver 1.0.0 0.1.0) 1
-  assert equal (compare-ver v1.0.0 v0.1.0) 1
+def 'compare-ver：v1.0.0 is greater than v0.999.0' [] {
+  assert equal (compare-ver 1.0.0 0.999.0) 1
+  assert equal (compare-ver v1.0.0 v0.999.0) 1
 }
 
 #[test]
-def 'v1.0.1 is equal to v1.0.1' [] {
+def 'compare-ver：v1.0.1 is equal to v1.0.1' [] {
   assert equal (compare-ver 1.0.1 1.0.1) 0
 }
 
 #[test]
-def 'v1.0.1 is lower than v1.1.0' [] {
+def 'compare-ver：v1.0.0 is equal to v1' [] {
+  assert equal (compare-ver v1.0.0 v1) 0
+}
+
+#[test]
+def 'compare-ver：v1.0.1 is greater than v1' [] {
+  assert equal (compare-ver v1.0.1 v1) 1
+}
+
+#[test]
+def 'compare-ver：v1.0.1 is lower than v1.1.0' [] {
   assert equal (compare-ver 1.0.1 1.1.0) (-1)
 }
+
+#[test]
+def 'from-env：.env load should work' [] {
+  open tests/resources/.env.test | from env | load-env
+  assert equal $env.CHAT_MODEL deepseek-chat
+  assert equal $env.BASE_URL https://api.deepseek.ai
+  assert equal $env.TEMPERATURE '1.0'
+  assert equal $env.MAX_LENGTH '0'
+  assert equal $env.USER_PROMPT 'Please review the following code changes'
+}
+
+#[test]
+def 'is-installed：binary install check should work' [] {
+  assert equal (is-installed git) true
+  assert equal (is-installed abc) false
+}
+
+#[test]
+def 'has-ref：git repo should has HEAD ref' [] {
+  assert equal (has-ref HEAD) true
+  assert equal (has-ref 0000) false
+}
+
+#[test]
+def 'git-check：current dir is a git repo' [] {
+  assert equal (git-check (pwd) --check-repo=1) true
+}