[tests] register tests/expr17.py (#2580)

* register tests/expr17.py

* remove cpp entry

* only tests python

Author: khushi-411

tests/reference/python-expr17-3b84714.json

@@ -0,0 +1,13 @@
+{
+    "basename": "python-expr17-3b84714",
+    "cmd": "lpython --no-color --show-python {infile}",
+    "infile": "tests/expr17.py",
+    "infile_hash": "105d03de28e04eac6f02555286cf2b954caa81d7135618017aeefe79",
+    "outfile": null,
+    "outfile_hash": null,
+    "stdout": "python-expr17-3b84714.stdout",
+    "stdout_hash": "c5754f71e1cd9a019d7289d5ccee634a42d75ac775b0e115eea48f03",
+    "stderr": null,
+    "stderr_hash": null,
+    "returncode": 0
+}

tests/reference/python-expr17-3b84714.stdout

@@ -0,0 +1,14 @@
+def if_check():
+    a: i32
+    a = 4
+    if (a) < (0):
+        print("negative value")
+    else:
+        if (a) > (0):
+            print("positive value")
+        else:
+            print("zero")
+
+
+
+

tests/tests.toml

@@ -140,6 +140,10 @@ cpp = true
 filename = "expr16.py"
 asr = true
 
+[[test]]
+filename = "expr17.py"
+python = true
+
 [[test]]
 filename = "expr_01.py"
 ast = true