Add list.count tests

Author: virendrakabra14

integration_tests/test_list_count.py

@@ -0,0 +1,33 @@
+from lpython import i32
+
+def test_list_count():
+    i: i32
+    x: list[i32] = []
+    
+    for i in range(-5, 0):
+        assert x.count(i) == 0
+        x.append(i)
+        assert x.count(i) == 1
+        x.append(i)
+        assert x.count(i) == 2
+        x.remove(i)
+        assert x.count(i) == 1
+
+    assert x == [-5, -4, -3, -2, -1]
+
+    for i in range(0, 5):
+        assert x.count(i) == 0
+        x.append(i)
+        assert x.count(i) == 1
+
+    assert x == [-5, -4, -3, -2, -1, 0, 1, 2, 3, 4]
+    
+    while len(x)>0:
+        i = x[-1]
+        x.remove(i)
+        assert x.count(i) == 0
+
+    assert len(x) == 0
+    assert x.count(0) == 0
+
+test_list_count()

tests/errors/test_list_count.py

@@ -0,0 +1,6 @@
+from lpython import i32
+
+def test_list_count_error():
+    a: list[i32]
+    a = [1, 2, 3]
+    a.count(1.0)

tests/reference/asr-test_list_count-4b42498.json

@@ -0,0 +1,13 @@
+{
+    "basename": "asr-test_list_count-4b42498",
+    "cmd": "lpython --show-asr --no-color {infile} -o {outfile}",
+    "infile": "tests/errors/test_list_count.py",
+    "infile_hash": "01975bd7c4bba02fd811de536b218167da99b532fa955b7bf8339779",
+    "outfile": null,
+    "outfile_hash": null,
+    "stdout": null,
+    "stdout_hash": null,
+    "stderr": "asr-test_list_count-4b42498.stderr",
+    "stderr_hash": "f26efcc623b68ca43ef871eb01c8e3cbd1ae464baaa491c6e4969696",
+    "returncode": 2
+}

tests/reference/asr-test_list_count-4b42498.stderr

@@ -0,0 +1,5 @@
+semantic error: Type mismatch in 'count', the types must be compatible
+ --> tests/errors/test_list_count.py:6:13
+  |
+6 |     a.count(1.0)
+  |             ^^^ type mismatch (found: 'f64', expected: 'i32')

tests/tests.toml

@@ -692,6 +692,10 @@ asr = true
 filename = "errors/test_list4.py"
 asr = true
 
+[[test]]
+filename = "errors/test_list_count.py"
+asr = true
+
 [[test]]
 filename = "errors/test_set1.py"
 asr = true