Slack import unit tests (#4201)

* Slack Import unit tests (for some functions).

Covers the completely self contained functions in the Slack Importer
that are straightforward to unit test.

JSON processing functions are not yet unit tested.

* Unit tests for Slack Import JSON parsing.

This tests the 3 functions for parsing JSON, using a sample set of
Slack data for posts, channels, and users.

1 files changed, 180 insertions, 0 deletions

diff --git a/tests/slack-import-test-posts.json b/tests/slack-import-test-posts.json
new file mode 100644
index 000000000..ca0d0a78c
--- /dev/null
+++ b/tests/slack-import-test-posts.json
@@ -0,0 +1,180 @@
+[
+    {
+        "type": "message",
+        "user": "U07Q4MHCP",
+        "text": "<@U24CG47QU>",
+        "ts": "1472932439.000002"
+    },
+    {
+        "user": "U07Q4MHCP",
+        "text": "<@U07Q4MHCP|lindy> has left the channel",
+        "type": "message",
+        "subtype": "channel_leave",
+        "ts": "1469440454.000002"
+    },
+    {
+        "user": "U15FUR1QS",
+        "purpose": "Let's discuss our next monthly outing",
+        "type": "message",
+        "subtype": "channel_purpose",
+        "text": "<@U15FUR1QS|igor> set the channel purpose: Let's discuss our next monthly outing",
+        "ts": "1462216387.000003"
+    },
+    {
+        "type": "message",
+        "subtype": "file_share",
+        "text": "<@U07Q4MHCP|lindy> uploaded a file: <https:\/\/slackexportteam.slack.com\/files\/lindy\/F1WB5FH7W\/pdf.pdf|Pdf.pdf>",
+        "file": {
+            "id": "F1WB5FH7W",
+            "created": 1469782519,
+            "timestamp": 1469782519,
+            "name": "Pdf.pdf",
+            "title": "Pdf.pdf",
+            "mimetype": "application\/pdf",
+            "filetype": "pdf",
+            "pretty_type": "PDF",
+            "user": "U07Q4MHCP",
+            "editable": false,
+            "size": 457717,
+            "mode": "hosted",
+            "is_external": false,
+            "external_type": "",
+            "is_public": true,
+            "public_url_shared": false,
+            "display_as_bot": false,
+            "username": "",
+            "url_private": "https:\/\/files.slack.com\/files-pri\/T07Q4MHC7-F1WB5FH7W\/pdf.pdf?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "url_private_download": "https:\/\/files.slack.com\/files-pri\/T07Q4MHC7-F1WB5FH7W\/download\/pdf.pdf?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "permalink": "https:\/\/slackexportteam.slack.com\/files\/lindy\/F1WB5FH7W\/pdf.pdf",
+            "permalink_public": "https:\/\/slack-files.com\/T07Q4MHC7-F1WB5FH7W-8560bd68a4",
+            "channels": [
+                "C07Q4MBTL"
+            ],
+            "groups": [
+    
+            ],
+            "ims": [
+    
+            ],
+            "comments_count": 0
+        },
+        "user": "U07Q4MHCP",
+        "upload": true,
+        "display_as_bot": false,
+        "username": "<@U07Q4MHCP|lindy>",
+        "bot_id": null,
+        "ts": "1469782519.000002"
+    },
+    {
+        "user": "U24CG47QU",
+        "text": "<@U24CG47QU|lindy.invite> has joined the channel",
+        "type": "message",
+        "subtype": "channel_join",
+        "ts": "1472028157.000002"
+    },
+    {
+        "bot_id": "B13CH9S5V",
+        "attachments": [
+            {
+                "fallback": "<https:\/\/twitter.com\/m2pls|@m2pls>: M2 informatique PLS et EID2 on vous retrouve sur le <https:\/\/twitter.com\/mattermosthq|@mattermosthq> du master, les invitations partiront lundi (ou demander en MP).",
+                "ts": 1474722287,
+                "author_name": "Master 2 PLS",
+                "author_link": "https:\/\/twitter.com\/m2pls\/status\/779667900600844288",
+                "author_icon": "https:\/\/pbs.twimg.com\/profile_images\/649829889890086912\/ULpVHs9S_normal.jpg",
+                "author_subname": "@m2pls",
+                "pretext": "<https:\/\/twitter.com\/m2pls\/status\/779667900600844288>",
+                "text": "M2 informatique PLS et EID2 on vous retrouve sur le <https:\/\/twitter.com\/mattermosthq|@mattermosthq> du master, les invitations partiront lundi (ou demander en MP).",
+                "service_name": "twitter",
+                "service_url": "https:\/\/twitter.com\/",
+                "from_url": "https:\/\/twitter.com\/m2pls\/status\/779667900600844288",
+                "id": 1,
+                "footer": "Twitter",
+                "footer_icon": "https:\/\/a.slack-edge.com\/6e067\/img\/services\/twitter_pixel_snapped_32.png"
+            }
+        ],
+        "text": null,
+        "type": "message",
+        "subtype": "bot_message",
+        "ts": "1474722288.637240"
+    },
+    {
+        "type": "message",
+        "user": "U07Q4MHCP",
+        "text": "<https:\/\/slackexportteam.slack.com\/archives\/general\/p1469781868000005>",
+        "attachments": [
+            {
+                "from_url": "https:\/\/slackexportteam.slack.com\/archives\/general\/p1469781868000005",
+                "fallback": "[July 29th, 2016 1:44 AM] lindy: permalink?",
+                "ts": "1469781868.000005",
+                "author_subname": "lindy",
+                "channel_id": "C07Q4SBL3",
+                "channel_name": "general",
+                "is_msg_unfurl": true,
+                "text": "permalink?",
+                "author_link": "https:\/\/slackexportteam.slack.com\/team\/lindy",
+                "author_icon": "https:\/\/secure.gravatar.com\/avatar\/822d051544b1f50f1e9f015cd2990edc.jpg?s=48&d=https%3A%2F%2Fa.slack-edge.com%2F0180%2Fimg%2Favatars%2Fava_0001-48.png",
+                "mrkdwn_in": [
+                    "text"
+                ],
+                "id": 1,
+                "footer": "Posted in #general"
+            }
+        ],
+        "ts": "1469781880.000006"
+    },
+    {
+        "type": "message",
+        "subtype": "file_share",
+        "text": "<@U07Q4MHCP|lindy> uploaded a file: <https:\/\/slackexportteam.slack.com\/files\/lindy\/F1WBDJW93\/fb-wow.gif|fb-wow.gif>",
+        "file": {
+            "id": "F1WBDJW93",
+            "created": 1469782076,
+            "timestamp": 1469782076,
+            "name": "fb-wow.gif",
+            "title": "fb-wow.gif",
+            "mimetype": "image\/gif",
+            "filetype": "gif",
+            "pretty_type": "GIF",
+            "user": "U07Q4MHCP",
+            "editable": false,
+            "size": 27235,
+            "mode": "hosted",
+            "is_external": false,
+            "external_type": "",
+            "is_public": true,
+            "public_url_shared": false,
+            "display_as_bot": false,
+            "username": "",
+            "url_private": "https:\/\/files.slack.com\/files-pri\/T07Q4MHC7-F1WBDJW93\/fb-wow.gif?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "url_private_download": "https:\/\/files.slack.com\/files-pri\/T07Q4MHC7-F1WBDJW93\/download\/fb-wow.gif?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "thumb_64": "https:\/\/files.slack.com\/files-tmb\/T07Q4MHC7-F1WBDJW93-7031b90b93\/fb-wow_64.png?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "thumb_80": "https:\/\/files.slack.com\/files-tmb\/T07Q4MHC7-F1WBDJW93-7031b90b93\/fb-wow_80.png?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "thumb_360": "https:\/\/files.slack.com\/files-tmb\/T07Q4MHC7-F1WBDJW93-7031b90b93\/fb-wow_360.png?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "thumb_360_w": 59,
+            "thumb_360_h": 59,
+            "thumb_160": "https:\/\/files.slack.com\/files-tmb\/T07Q4MHC7-F1WBDJW93-7031b90b93\/fb-wow_160.png?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "image_exif_rotation": 1,
+            "original_w": 59,
+            "original_h": 59,
+            "deanimate_gif": "https:\/\/files.slack.com\/files-tmb\/T07Q4MHC7-F1WBDJW93-7031b90b93\/fb-wow_deanimate_gif.png?t=xoxe-7820731415-83616398485-83620610359-b95751e3ea",
+            "permalink": "https:\/\/slackexportteam.slack.com\/files\/lindy\/F1WBDJW93\/fb-wow.gif",
+            "permalink_public": "https:\/\/slack-files.com\/T07Q4MHC7-F1WBDJW93-718081d960",
+            "channels": [
+                "C07Q4SBL3"
+            ],
+            "groups": [
+    
+            ],
+            "ims": [
+    
+            ],
+            "comments_count": 0
+        },
+        "user": "U07Q4MHCP",
+        "upload": true,
+        "display_as_bot": false,
+        "username": "<@U07Q4MHCP|lindy>",
+        "bot_id": null,
+        "ts": "1469782077.000010"
+    }
+]
\ No newline at end of file