add more tests

tests/testthat/_snaps/call-analysis.md

@@ -55,3 +55,24 @@
       pv_focus(p, "outer")
       pv_callers(p, "outer")
 
+# pv_print_callers_callees shows none when callees empty
+
+    Code
+      pv_print_callers_callees(p, "bar")
+    Output
+      ## FUNCTION ANALYSIS: bar
+
+
+      Total time: 10 ms (33.3% of profile)
+      Appearances: 1 samples
+
+      ### Called by
+            1 samples (100.0%)  foo
+
+      ### Calls to
+        Callees: none
+
+      ### Next steps
+      pv_focus(p, "bar")
+      pv_focus(p, "foo")
+

tests/testthat/_snaps/compare.md

@@ -20,3 +20,71 @@
       pv_focus(p_before, "deep")
       pv_focus(p_after, "deep")
 
+# pv_print_compare shows improvements and regressions
+
+    Code
+      pv_print_compare(p1, p2)
+    Output
+      ## PROFILE COMPARISON
+
+
+
+      ### Overall
+      before_ms: 100
+      after_ms: 100
+      diff_ms: +0
+      speedup: 1.00x
+
+      ### Biggest Changes
+      Function                           Before      After       Diff   Change
+      slow_func                              50          0        -50    -100%
+      new_func                                0         50        +50      new
+
+      ### Top Improvements
+        slow_func: 50 -> 0 (-50 ms)
+
+      ### Regressions
+        new_func: 0 -> 50 (+50 ms)
+
+      ### Next steps
+      pv_focus(p_before, "slow_func")
+      pv_focus(p_after, "slow_func")
+
+# pv_compare_many requires at least 2 profiles
+
+    Code
+      pv_compare_many(a = p)
+    Condition
+      Error:
+      ! At least 2 profiles are required for comparison.
+
+# pv_compare_many requires named profiles
+
+    Code
+      pv_compare_many(p1, p2)
+    Condition
+      Error:
+      ! All profiles must be named.
+
+# pv_compare_many rejects non-profvis input
+
+    Code
+      pv_compare_many(a = p, b = list())
+    Condition
+      Error:
+      ! 'b' must be a profvis object.
+
+# pv_print_compare_many snapshot
+
+    Code
+      pv_print_compare_many(a = p1, b = p2)
+    Output
+      ## MULTI-PROFILE COMPARISON
+
+
+      Rank  Profile                    Time (ms)  Samples vs Fastest
+        1*  a                                 50        5    fastest
+        2   b                                 50        5    fastest
+
+      * = fastest
+

tests/testthat/_snaps/diagnostics.md

@@ -86,3 +86,14 @@
       pv_focus(p, "x")
       pv_gc_pressure(p)
 
+# pv_print_suggestions handles profile with truly no suggestions
+
+    Code
+      pv_print_suggestions(p)
+    Output
+      ## OPTIMIZATION SUGGESTIONS
+
+
+      No suggestions.
+      Run pv_help() to see all available functions.
+

tests/testthat/_snaps/focus.md

@@ -81,3 +81,124 @@
       pv_focus(p, "bar")
       pv_callers(p, "foo")
 
+# pv_focus handles more than 5 callers
+
+    Code
+      pv_focus(p, "target")
+    Output
+      ## FOCUS: target
+
+
+      ### Time Analysis
+        Total time:       60 ms (100.0%)  - time on call stack
+        Self time:        60 ms (100.0%)  - time at top of stack
+        Child time:        0 ms (  0.0%)  - time in callees
+        Appearances:       6 samples
+
+      ### Called By
+            1 calls ( 16.7%)  caller1
+            1 calls ( 16.7%)  caller2
+            1 calls ( 16.7%)  caller3
+            1 calls ( 16.7%)  caller4
+            1 calls ( 16.7%)  caller5
+        ... and 1 more callers
+
+      ### Calls To
+        Callees: none
+
+      ### Source Locations
+        Source references not available.
+        Use devtools::load_all() to enable.
+
+      ### Next steps
+      pv_callers(p, "target")
+      pv_focus(p, "caller1")
+
+# pv_focus shows callees none for leaf function
+
+    Code
+      pv_focus(p, "bar")
+    Output
+      ## FOCUS: bar
+
+
+      ### Time Analysis
+        Total time:       10 ms ( 33.3%)  - time on call stack
+        Self time:        10 ms ( 33.3%)  - time at top of stack
+        Child time:        0 ms (  0.0%)  - time in callees
+        Appearances:       1 samples
+
+      ### Called By
+            1 calls (100.0%)  foo
+
+      ### Calls To
+        Callees: none
+
+      ### Source Locations
+        Source references not available.
+        Use devtools::load_all() to enable.
+
+      ### Next steps
+      pv_callers(p, "bar")
+      pv_focus(p, "foo")
+
+# pv_focus handles more than 5 callees
+
+    Code
+      pv_focus(p, "target")
+    Output
+      ## FOCUS: target
+
+
+      ### Time Analysis
+        Total time:       60 ms (100.0%)  - time on call stack
+        Self time:         0 ms (  0.0%)  - time at top of stack
+        Child time:       60 ms (100.0%)  - time in callees
+        Appearances:       6 samples
+
+      ### Called By
+            6 calls (100.0%)  (top-level)
+
+      ### Calls To
+            1 calls ( 16.7%)  callee1
+            1 calls ( 16.7%)  callee2
+            1 calls ( 16.7%)  callee3
+            1 calls ( 16.7%)  callee4
+            1 calls ( 16.7%)  callee5
+        ... and 1 more callees
+
+      ### Source Locations
+        Source references not available.
+        Use devtools::load_all() to enable.
+
+      ### Next steps
+      pv_focus(p, "callee1")
+      pv_callers(p, "target")
+
+# pv_focus handles function with source refs but no self-time with source
+
+    Code
+      pv_focus(p, "target")
+    Output
+      ## FOCUS: target
+
+
+      ### Time Analysis
+        Total time:       10 ms (100.0%)  - time on call stack
+        Self time:         0 ms (  0.0%)  - time at top of stack
+        Child time:       10 ms (100.0%)  - time in callees
+        Appearances:       1 samples
+
+      ### Called By
+            1 calls (100.0%)  (top-level)
+
+      ### Calls To
+            1 calls (100.0%)  deep
+
+      ### Source Locations
+        No self-time with source info.
+
+      ### Next steps
+      pv_focus(p, "deep")
+      pv_callers(p, "target")
+