Issue #19990: Added tests for the imghdr module.
Based on patch by Claudiu Popa.
diff --git a/Lib/test/imghdrdata/python.pbm b/Lib/test/imghdrdata/python.pbm
new file mode 100644
index 0000000..1848ba7
--- /dev/null
+++ b/Lib/test/imghdrdata/python.pbm
@@ -0,0 +1,3 @@
+P4
+16 16
+ûñ¿úßÕ­±[ñ¥a_ÁX°°ðððð?ÿÿ
\ No newline at end of file