Issue #22: Implement sorting using a struct to hold the state of the sorting

internal/gocovshtest/happy_flow_test.go

@@ -163,4 +163,37 @@ func testHappyFlow(t *testing.T, prefix string, requestedFiles []string, filtere
 			g.Assert(t, "happy_flow_toggle_help_short", []byte(mm.View()))
 		})
 	})
+
+	t.Run("toggle sort", func(t *testing.T) {
+		t.Run("percentage", func(t *testing.T) {
+			mm, cmd := mt.sendLetterKey('s')
+			require.NotNil(t, mm)
+			require.Nil(t, cmd)
+
+			g.Assert(t, "happy_flow_toggle_sort_percentage", []byte(mm.View()))
+		})
+
+		t.Run("name", func(t *testing.T) {
+			mm, cmd := mt.sendLetterKey('s')
+			require.NotNil(t, mm)
+			require.Nil(t, cmd)
+
+			g.Assert(t, "happy_flow_toggle_sort_name", []byte(mm.View()))
+		})
+
+		t.Run("dsc", func(t *testing.T) {
+			mm, cmd := mt.sendLetterKey('!')
+			require.NotNil(t, mm)
+			require.Nil(t, cmd)
+
+			g.Assert(t, "happy_flow_toggle_sort_dsc", []byte(mm.View()))
+		})
+		t.Run("asc", func(t *testing.T) {
+			mm, cmd := mt.sendLetterKey('!')
+			require.NotNil(t, mm)
+			require.Nil(t, cmd)
+
+			g.Assert(t, "happy_flow_toggle_sort_asc", []byte(mm.View()))
+		})
+	})
 }

internal/gocovshtest/testdata/general/filtered/happy_flow_toggle_sort_asc.golden

@@ -0,0 +1,19 @@
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+    Available files:                              
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+    1 item                                        
+  > covered.go  100.00%                           
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+    ↑/k up • ↓/j down • / filter • q quit • ? more
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internal/gocovshtest/testdata/general/filtered/happy_flow_toggle_sort_dsc.golden

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+    Available files:                              
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+    1 item                                        
+  > covered.go  100.00%                           
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internal/gocovshtest/testdata/general/filtered/happy_flow_toggle_sort_name.golden

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+    Available files:                              
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+    1 item                                        
+  > covered.go  100.00%                           
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internal/gocovshtest/testdata/general/filtered/happy_flow_toggle_sort_percentage.golden

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+    Available files:                              
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+  > covered.go  100.00%                           
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internal/gocovshtest/testdata/general/not-requested/happy_flow_toggle_sort_asc.golden

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+    Available files:                                                          
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+    2 items                                                                   
+    covered.go  100.00%                                                       
+  > partial_with_a_very_long_name_to_trigger_ellipsis_in_the_output.go  75.00%
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internal/gocovshtest/testdata/general/not-requested/happy_flow_toggle_sort_dsc.golden

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+    Available files:                                                          
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+    2 items                                                                   
+    partial_with_a_very_long_name_to_trigger_ellipsis_in_the_output.go  75.00%
+  > covered.go  100.00%                                                       
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internal/gocovshtest/testdata/general/not-requested/happy_flow_toggle_sort_name.golden

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+    Available files:                                                          
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+    2 items                                                                   
+    covered.go  100.00%                                                       
+  > partial_with_a_very_long_name_to_trigger_ellipsis_in_the_output.go  75.00%
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internal/gocovshtest/testdata/general/not-requested/happy_flow_toggle_sort_percentage.golden

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+    Available files:                                                          
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+    2 items                                                                   
+    covered.go  100.00%                                                       
+  > partial_with_a_very_long_name_to_trigger_ellipsis_in_the_output.go  75.00%
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internal/gocovshtest/testdata/general/requested/happy_flow_toggle_sort_asc.golden

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+    Available files:                              
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+    1 item                                        
+  > covered.go  100.00%                           
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internal/gocovshtest/testdata/general/requested/happy_flow_toggle_sort_dsc.golden

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+    Available files:                              
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+  > covered.go  100.00%                           
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internal/gocovshtest/testdata/general/requested/happy_flow_toggle_sort_name.golden

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+    Available files:                              
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+    1 item                                        
+  > covered.go  100.00%                           
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internal/gocovshtest/testdata/general/requested/happy_flow_toggle_sort_percentage.golden

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+    Available files:                              
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+    1 item                                        
+  > covered.go  100.00%                           
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