Test coverage calculation script (#10804)

* statistics script

* calculating coverage

* finalized coverage script

tools/azure-sdk-tools/devtools_testutils/mgmt_test_stats.py

@@ -0,0 +1,50 @@
+from os import listdir, walk
+import re
+from os.path import join, exists
+
+print("| Package                                | Coverage   |")
+print("|----------------------------------------|------------|")
+
+pattern = ".\/sdk\/[a-z]+\/azure-mgmt-[a-z-]+$" 
+dirs = [x[0] for x in walk(".") if re.match(pattern, x[0])]
+dirs.sort(key=lambda x: x.split("/").pop())
+total = 0
+manual = 0
+auto = 0
+none = 0
+for d in dirs:
+  total += 1
+  coverage = "-"
+  test_dir = join(d, "tests")
+  if exists(test_dir):
+    test_files = [f for f in listdir(test_dir) if re.match("^test_[a-z_]+.py$", f)]
+    has_manual = False
+    has_auto = False
+    for t in test_files:
+      coverage = "MANUAL"
+      if t.startswith("test_cli_"):
+        coverage = "AUTO"
+        with open(join(test_dir, t)) as f:
+          content = f.readlines()
+          coverage = [x for x in content if x.startswith("# Coverage %      :")]
+          coverage = 0 if not coverage else float(coverage[0].split(":").pop())
+        has_auto = True
+      else:
+        has_manual = True
+    manual += 1 if has_manual else 0
+    auto += 1 if has_auto else 0
+  else:
+    none += 1
+
+  print("| {:38} | {:10} |".format(d.split("/").pop(), coverage if coverage in ["-" , "AUTO", "MANUAL"] else "{:4.2f}".format(coverage)))
+
+print("| {:38} | {:10} |".format("", ""))
+print("| {:38} | {:10} |".format("**TOTAL**", "**{}**".format(total)))
+print("| {:38} | {:10} |".format("**MANUAL**", "**{}**".format(manual)))
+print("| {:38} | {:10} |".format("**MANUAL %**", "**{:4.2f}**".format(100 * manual / total)))
+print("| {:38} | {:10} |".format("**AUTO**", "**{}**".format(auto)))
+print("| {:38} | {:10} |".format("**AUTO %**", "**{:4.2f}**".format(100 * auto / total)))
+print("| {:38} | {:10} |".format("**NONE**", "**{}**".format(none)))
+print("| {:38} | {:10} |".format("**NONE %**", "**{:4.2f}**".format(100 * none / total)))
+
+