Pretty print expected json output of command line tests

Author: miles170

test/cmdlineTests/standard_urls_existing_and_missing/args

@@ -0,0 +1 @@
+--pretty-json --json-indent 4

test/cmdlineTests/standard_urls_existing_and_missing/output.json

@@ -1 +1,19 @@
-{"errors":[{"component":"general","formattedMessage":"Cannot import url (\"standard_urls_existing_and_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".","message":"Cannot import url (\"standard_urls_existing_and_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".","severity":"warning","type":"Warning"}],"sources":{"url_not_found.sol":{"id":0}}}
+{
+    "errors":
+    [
+        {
+            "component": "general",
+            "formattedMessage": "Cannot import url (\"standard_urls_existing_and_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".",
+            "message": "Cannot import url (\"standard_urls_existing_and_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".",
+            "severity": "warning",
+            "type": "Warning"
+        }
+    ],
+    "sources":
+    {
+        "url_not_found.sol":
+        {
+            "id": 0
+        }
+    }
+}

test/cmdlineTests/standard_urls_missing/args

@@ -0,0 +1 @@
+--pretty-json --json-indent 4

test/cmdlineTests/standard_urls_missing/output.json

@@ -1 +1,27 @@
-{"errors":[{"component":"general","formattedMessage":"Cannot import url (\"standard_urls_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".","message":"Cannot import url (\"standard_urls_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".","severity":"error","type":"IOError"},{"component":"general","formattedMessage":"Cannot import url (\"standard_urls_missing/non-existent-contract.sol\"): File not found. Searched the following locations: \"\".","message":"Cannot import url (\"standard_urls_missing/non-existent-contract.sol\"): File not found. Searched the following locations: \"\".","severity":"error","type":"IOError"},{"component":"general","formattedMessage":"Cannot import url (\"standard_urls_missing/non-existent-contract-2.sol\"): File not found. Searched the following locations: \"\".","message":"Cannot import url (\"standard_urls_missing/non-existent-contract-2.sol\"): File not found. Searched the following locations: \"\".","severity":"error","type":"IOError"}],"sources":{}}
+{
+    "errors":
+    [
+        {
+            "component": "general",
+            "formattedMessage": "Cannot import url (\"standard_urls_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".",
+            "message": "Cannot import url (\"standard_urls_missing/non-existent-contract-1.sol\"): File not found. Searched the following locations: \"\".",
+            "severity": "error",
+            "type": "IOError"
+        },
+        {
+            "component": "general",
+            "formattedMessage": "Cannot import url (\"standard_urls_missing/non-existent-contract.sol\"): File not found. Searched the following locations: \"\".",
+            "message": "Cannot import url (\"standard_urls_missing/non-existent-contract.sol\"): File not found. Searched the following locations: \"\".",
+            "severity": "error",
+            "type": "IOError"
+        },
+        {
+            "component": "general",
+            "formattedMessage": "Cannot import url (\"standard_urls_missing/non-existent-contract-2.sol\"): File not found. Searched the following locations: \"\".",
+            "message": "Cannot import url (\"standard_urls_missing/non-existent-contract-2.sol\"): File not found. Searched the following locations: \"\".",
+            "severity": "error",
+            "type": "IOError"
+        }
+    ],
+    "sources": {}
+}