Simple acceptance test for ec validate input text

Include the --color flag added in the previous commit.

Ref: https://issues.redhat.com/browse/EC-1576

Author: simonbaird

features/__snapshots__/validate_input.snap

@@ -28,6 +28,22 @@
 
 [valid policy URL:stderr - 1]
 
+---
+[valid policy URL with text output:stdout - 1]
+Success: true
+Result: SUCCESS
+Violations: 0, Warnings: 0, Successes: 1
+Input File: pipeline_definition.yaml
+
+Results:
+✓ [Success] main.acceptor
+  FilePath: pipeline_definition.yaml
+
+
+---
+
+[valid policy URL with text output:stderr - 1]
+
 ---
 
 [policy with multiple sources:stdout - 1]

features/validate_input.feature

@@ -27,6 +27,29 @@ Feature: validate input
     Then the exit status should be 0
     Then the output should match the snapshot
 
+  Scenario: valid policy URL with text output
+    Given a git repository named "happy-day-config" with
+      | policy.yaml | examples/happy_config.yaml |
+    Given a git repository named "happy-day-policy" with
+      | main.rego | examples/happy_day.rego |
+    Given a pipeline definition file named "pipeline_definition.yaml" containing
+    """
+    ---
+    apiVersion: tekton.dev/v1
+    kind: Pipeline
+    metadata:
+      name: basic-build
+    spec:
+      tasks:
+      - name: appstudio-init
+        taskRef:
+          name: init
+          version: "0.1"
+    """
+    When ec command is run with "validate input --file pipeline_definition.yaml --policy git::https://${GITHOST}/git/happy-day-config.git --output text --show-successes --color"
+    Then the exit status should be 0
+    Then the output should match the snapshot
+
   Scenario: policy URL with no rego files
     Given a git repository named "sad-day-config" with
       | policy.yaml | examples/sad_config.yaml |